ELECTROMAGNETIC NEWS REPORT

42YEARS OF SERVICE

TO THEEMC COMMUNITY

A PUBLICATION OF SEVEN MOUNTAINS SCIENTIFIC, INC.Vol. 42, No. 5

E N RELECTROMAGNETIC NEWS REPORT

SEPTEMBER / OCTOBER 2014

ELECTROMAGNETIC NEWS REPORT

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Online at www.7ms.com

EMC SCAN

Overlooking the exhibition at the 2014 IEEE EMC Symposium in North Carolina’s Raleigh Convention Center. See photo feature beginning on page 12.

EMP GRID Teams with Armag Corporation EMP GRID Services, LLC of Mt. Prospect, Illinois, a premier enterprise-class design/build/manage service provider of Electromagnetic Pulse (EMP), High-Altitude Electromagnetic Pulse (HEMP), Intentional Electromagnetic Interference (IEMI) and solar flare protected data centers, reports the signing of a teaming agreement with Armag Corp. of Bardstown, Kentucky. The agreement expands the EMP GRID Services’ team and further enhances the consortium’s services and solutions portfolio by providing clients with custom manufactured, EMP shielded and ballistic resistant modular Mechanical/Electrical Infrastructure (MEP) and data center storage vaults. The EMP GRID Services teaming agreement creates a complete single source solution provider resource for design, build, commissioning of turn-key EMP/HEMP/IEMI and solar flare impact protected customer facility.

Retlif Honored With Prestigious Cogswell Award Retlif Testing Lab has received the prestigious Cogswell Outstanding Industrial Security Achievement Award. Presented at the annual National Center for Manufacturing Sciences (NCMS) training seminar at National Harbor, Maryland, the Cogswell Award recognizes industrial security excellence and outstanding achievement in matters related exclusively to a facility’s security program. “The Cogswell award criteria focuses the establishment and maintenance of security programs that far exceed basic National Industrial Security Program requirements,” comments Retlif president Walter Poggi. “We are pleased to be so recognized by the Defense Security Service.” Established in 1966, the award honors the late Air Force Colonel James S. Cogswell, the first Chief of Industrial Security within the Department of Defense. Colonel Cogswell developed the basic principles of the Industrial

Electromagnetic News Report

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September / October 2014

Static & Crosstalk

Dr. E. Thomas Chesworth, P.E.Technical Editor

Serving the Industry Since 1972,

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At the dark of the moon, when else, when the runes said that the time was auspicious I was cleaning out the old Astrology closet. I found under the Astrolabe covered with the lamp black of ages ye-old crystal ball. I polished off the lamp black with a cloth hoping that a little Ginn would pop out, but no such luck. However, in the now clean surface of the crystal one could see the billowing and swirling clouds of gray and dirty white that generally hide the future so that one can not actually figure out what’s going on. Having listened carefully to the talking heads on (if you’ll excuse the term) TV news – both bimbos and air headed matinee idols tell me all they know about what’s happening in Iran concerning the Nuclear negotiations. No. They try to tell me what they think is happening and the conclusions I should come to about the situation. But, what really is happening does shine through. What’s happening is just what the Ayatollah Cockamimi wants to happen: the dwarfs of the faithful are busily singing Hi-Ho Hi-Ho while putting the finishing touches on the Islamic bomb while the propaganda front for the faithful at the negotiating table are emasculating the dolts and buffoons such as our Secretary of State on our side of the table.

My crystal ball is clear. Iran will build an atomic bomb soon. The next step is simple. If the militants haven’t already sent in their order to Target, they can order up a Terrorist special – two for the price of one – Intercontinental ballistic missile from the North Koreans or from the French who will sell anything to anyone as long as they don’t call any of the wine they make Champagne. Once they have the thing, they will be in the catbird seat and they know it. They only have to convince people that they are crazy enough to use it. Any suicide bombing does that handily. In fact, using it as a bomb is counter productive. Once they blow it up, they no longer have it and whatever it takes with it isn’t worth as much as just having the bomb. But then they really are crazy. They seem to believe that their mission in life is to remove as many people who do not agree with them and damn the torpedos full steam ahead. And we are crazy too – remember Hiroshima and, more importantly, remember the Maine? We didn’t figure out that the infernal things are more valuable lurking in silos with the sorghum than they could ever be in use, until we sent our foes cowering because we had them and were dumb enough to use them. It will soon occur to all the voters in Los Angeles, New York City and Hoboken that if Tel Aviv has an Iron dome they need one. The politicians in DC – who won’t have a clue about what’s going on – will in any case feel the voters mood, count the votes and push procurement of Over the Horizon Radars, command and control complexes and radar guided missiles. Of course, all will have to be EMP proof. It is, after all, a nuclear (pronounced nuculur) defense system and everything – including the 6-32 machine screws and bolts used – will have to be tested to Military RFI Specs. So, my friends, put the European Restriction of Trade Specifications on the back shelf, forget that 3Meter Anechoic Chamber you were going to have to buy and haul out the old shielded chamber, mode stirrer, copper-plated grounded table and RF power amplifier you’re using to heat water for radiator steam heat of the office complex across the street. We’re back in the MIL-STD-461 testing business big time.

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September / October 2014

[SCAN - continued from page 1]

Experts in the Field…Cuming Microwave & Cuming Lehman Chambers

From the formulation of an advanced material in our laboratory to the construction of a host facility in the field, we are the world’s leading authority on the development of technology and products for the RFI/EMI Absorber, Radar Cross Section Reduction and Anechoic Chamber markets.

Pyramidal & Specialty Absorber Materials Cuming Microwave CorporationT 508.521.6700Avon, MA 02322 | CumingMicrowave.com.

Anechoic Chamber Design, Engineering and ConstructionCuming Lehman Chambers, Inc.T 717.263.4101Chambersburg, PA 17201 | CumingLehman.com

Security Program, which emphasize the industry-government partnership to protect classified information. This partnership ensures the greatest protection for the U.S. warfighter and classified information.

Retlif, with two locations on Long Island, as well as New Hampshire, North Carolina, Pennsylvania and Washington DC, is celebrating its 35th anniversary.

ETSI Updates Standards, TÜV Urges Compliance The European Telecommunications Standards Institute (ETSI) issued the updated versions of the EN 300 328 and EN 301 893 standards, introducing changes to testing procedures of applicable wireless equipment. TÜV Rheinland, a leading global certification body, strongly encourages manufacturers of wireless devices to comply with the updated testing and certification requirements to ensure they can sell in the European Union following the standard after the January 1, 2015 deadline. The EN 300 328 standard regulates wireless transmitters in the 2.4GHz band and affects multiple wireless technologies, including Wi-Fi®, Bluetooth® and ZigBee®. The latest version (1.8.1) seeks to improve the usage and quality of data transmission within the 2.4GHz band. It introduces significant changes to testing procedures for RF output power, power spectral density and medium access. Changes in procedures are also implemented in transmitter spurious emissions and

frequency range tests. Devices claiming conformance with the Radio and Telecommunication Terminal Equipment Directive need to be re-evaluated by December 31, 2014 if their test reports do not reference the 1.8.1 version. The EN 301 893 standard applies to 5GHz RLAN equipment used in wireless local area networks and intended to operate at 5150MHz – 5350MHz and 5470 MHz – 5725MHz frequency ranges. The 1.7.1 version outlines the relationship between Dynamic Frequency Selection (DFS) and uniform spreading, or adaptivity, which allows one RLAN device to detect another. The 1.7.1 version of the standard introduces changes to testing procedures, including RF output power, power density and unwanted emissions, as well as adds new requirements. Manufacturers that need compliance with EN 301 893 must re-evaluate their equipment due to these changes.

DISA to Move Swiftly on Spectrum-Related Contracts The Defense Information System Agency’s Defense Spectrum Organization (DISA) plans to have a “very active year” when it comes to its spectrum-related missions, according to a presentation given by Stuart Timerman, director of DISA’s DSO office, at the agency’s recent forecast to industry.

Timerman highlighted the need for DSO to strike a balance between its mission to secure spectrum for the Department of Defense and to also determine what can be released to commercial wireless companies. DSO is trying to move away from its reservation-based system – which reserves certain frequencies for military branches until they are no longer needed – and toward a shared-spectrum system. The strategy furthers action put forth earlier this year by former DOD CIO Terri Takai, who says releasing

Walter Poggi, Retlif president; William Hayes, Retlif executive VP-FSO; Stanley Sims Defense Security Service director; Donald Dwyer, Retlif assisant FSO; and Rick Lawhorn, Defense Security Service director of field operations.

spectrum was a critical first step in the department’s long term plans. The effort is part of a strategy from the current U.S. administration that requires 500MHz of spectrum be made available for commercial use by 2020.

API Receives New $3.6 Million Product Order API Technologies Corp. of Orlando, Florida, a leading provider of high performance RF/microwave, power, and security solutions for high-reliability applications, has received a new, $3.6 million order for microelectronics modules to be used in a major commercial airplane platform. The orders are scheduled for delivery throughout 2015. “Growth in the commercial aviation market has fueled new demand for sophisticated, high reliability electronics. Given API’s differentiated product portfolio, technical expertise, and aviation heritage, we have emerged as a key technology partner in the commercial aviation community. This order gives testament to our product quality and ability to meet the most exacting customer requirements,” says Bel Lazar, president and chief executive officer, API Technologies.

API Technologies products are used by global defense, industrial, and commercial customers in the areas of commercial aerospace, wireless communications, medical, oil and gas, electronic warfare, unmanned systems, C4ISR, missile defense, harsh environments, satellites, and space.

RFID Canada and AG Julia Europe Partner Italy’s AG Julia, a world leader in the manufacturing and printing of security products and tickets announces that Ontario’s RFID Canada, a leading RFID and NFC technology provider, is now the North American distributor of AG Julia’s RFID products. AG Julia designs, develops, and manufactures security products and admission tickets with passive RFID, HF and UHF, chips. AG Julia’s RFID products are used in more than 28 countries. This RFID product line will broaden RFID Canada’s capability to provide comprehensive solutions across diverse markets and applications. “We are uniquely positioned to understand and provide our clients the most complete RFID product offering and

Electromagnetic News Report September / October 2014

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welcome the addition of the AG Julia’s products to our portfolio. The inclusion of AG Julia’s RFID contactless cards, tickets and wristbands enables our partners to have access to a single and most comprehensive source of RFID tags and readers,” says Bob Moroz, president of RFID Canada.

Hamada to Join Keysight Board Keysight Technologies Inc., the spinoff electronic measurement company of Agilent Technologies, plans to appoint Rick Hamada to its board of directors. Hamada is the chief executive officer and member of the board of directors of Avnet Inc., positions he has held since July 2011. As CEO of Avnet, Hamada is responsible for the strategic direction and oversight of day-to-day operations of one of the largest global distributors of electronic components, computer products and embedded technology. Prior to his current role, Hamada served as chief operating officer of Avnet since July 2006, and president and CEO since May 2010. Keysight expects Hamada’s appointment to become effective concurrently with, or shortly before, the completion of the Keysight spinoff, currently targeted for November 2014. In September 2013, Agilent Technologies announced plans to separate into two publicly traded companies through a tax-free spinoff of its electronic measurement business. The new company, Keysight Technologies, began operating as a wholly owned subsidiary of Agilent on August 1, 2014.

Presto Expands Capacity for RF Test Turnkey back-end production services firm Presto Engineering Inc of San Jose, California, which provides semiconductor product engineering & test services to both integrated device manufacturer (IDM), fabless and electronics companies, has tripled the capacity of its San Jose engineering hub, and has added new radio-frequency device testing equipment to its hub in Caen, France. “The RF market is booming as a result of rapidly increasing consumer demand for smart-phones and other mobile devices, and the massive expansion of backhaul and data centers worldwide,” says CEO Michel Villemain.

“As a result, we are in full-expansion mode as we move to support this growth with aggressive investments in additional capacity.” Presto’s hub in Caen, France will support all aspects of RF, as well as analog and mixed-signal devices. The Caen hub is the only back-end service house in Europe with 12-inch wafer probe capabilities coupled with the most advanced RF automated test equipment (ATE) in the market, says the firm. Presto’s San Jose hub will focus on high-frequency RF testing at millimeter wavelengths.

New ANSYS VP, Worldwide Sales and Support Robert Kocis, a 16-year veteran of Needham, Massachusetts-based PTC Inc., has recently been appointed as ANSYS’s vice president, worldwide sales and support. He is responsible for providing leadership for the overall strategy and management of the activities of ANSYS’s global sales and support organization, and reports directly to Jim Cashman, president and CEO. Kocis succeeds Joseph Fairbanks who, as previously announced, decided to resign from the company to pursue and achieve other career opportunities. Kocis has more than 20 years of experience in sales leadership and business management. At PTC, Kocis has served most recently as senior divisional vice president of Asia Pacific sales and distribution, where he had strategic sales leadership and general management oversight responsibilities for PTC’s operations across Asia. He is a graduate of the United States Merchant Marine Academy with a B.S. in marine engineering systems. Founded in 1970, ANSYS of Canonsburg, Pennsylvania, employs nearly 2,700 professionals, many of them experts in engineering fields such as finite element analysis, computational fluid dynamics, electronics and electromagnetics, and design optimization.

Mouser Expands Distribution Accord with ADLINK Mouser Electronics, Inc. of Dallas, Texas, a leading authorized distributor for semiconductors and electronic components, has greatly expanded its agreement with ADLINK Technology to distribute ADLINK products across Europe.

Robert Kocis

Rick Hamada

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September / October 2014

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Mouser’s international distribution agreement with ADLINK now includes EMEA, China and the Americas. Taipei, Taiwan-based ADLINK Technology is a Premier Member of the Intel® IoT Solutions Alliance, one of the world’s most recognized and trusted technology ecosystems. Mouser stocks and delivers a wide range of ADLINK Technology products, including embedded computing products and services to the test and measurement, automation and process control, gaming, communications, medical, network security, and transportation industries.

SDA Signs Pentagon Data-Sharing Agreement A space satellite association has signed a data-sharing agreement with the Pentagon to avoid interference with satellite signals. The Space Data Association (SDA) will participate in the Department of Defense’s Space Situational Awareness Data Sharing Program.

This is the first such agreement between the Pentagon and an entity that doesn’t operate satellites, according to the SDA. “Under the agreement, the U.S. DoD and SDA will now be able to formally collaborate on matters concerning space situational awareness, including mitigation of electromagnetic interference and radio frequency interference,” says an SDA announcement. The SDA was established by satellite operators to improve satellite safety and efficiency. It is seeking the participation of all satellite operators worldwide.

CNO Tours Navy Electromagnetic Railgun Naval Surface Warfare Center Dahlgren Division (NSWCDD) leaders briefed Chief of Naval Operations (CNO) Adm. Jonathan Greenert on technologies ranging from the electromagnetic railgun to the laser weapon system during his recent visit. The CNO spoke to sailors and civilian technologists about the great impact of emerging capabilities on the current and future fleet during an All Hands call held after his tour.

“You are the test and evaluation national treasure that makes the surface fleet more lethal and more survivable,” Greenert told more than 400 military, government, and contractor personnel from Naval Support Facility Dahlgren, NSWCDD, Aegis Training and Readiness Center, Center for Surface Combat Systems, Aegis Ballistic Missile Defense, Joint Warfare and Analysis Center, and the 614th Air and Space Operations Center. The national treasure he observed included NSWCDD facilities where real-time spectrum operations and directed energy technologies such as the laser weapon system and electromagnetic railgun are under a continual state of research, development, test and evaluation. “I am really excited – you are taking concepts and putting it in the fleet for what is, up until now, record time,” says Greenert, pointing out that NSWCDD scientists and engineers are integrating the laser weapon system into the USS Ponce (AFSB-I), an Austin-class amphibious transport dock. “We have to continue to turn this cycle faster and faster,” says Greenert. “Technology gets proliferated and other people have systems that we really don’t want them to have. We have to figure out how to defeat and stay ahead of that – and be where it matters, when it matters.” The CNO – who observed an electromagnetic railgun

firing – described the technology as “our future surface weapon” during the All Hands event to be available video on-demand via the NSWCDD internal website to the command’s 6,000 plus personnel comprised of government civilians, contractors, and military members. The electromagnetic railgun launcher is a long-range weapon that fires projectiles using electricity instead of chemical propellants. Magnetic fields created by high electrical currents accelerate a sliding metal conductor, or armature, between two rails to launch projectiles at 4,500 mph to 5,600 miles per hour.

NSA Certifies Harris Corp.’s Manpack The U.S. National Security Agency (NSA) has granted Type 1 certification for Melbourne, Florida-based Harris Corp’s Falcon 3 RF-340M multi-channel manpack radio. Harris is now able to field the radios for secure communications reaching up to the top secret level of information assurance. The company expects to make the first delivery to the U.S. Navy this fall. The Falcon 3 RF-340M supports all required U.S. government wideband and narrowband waveforms, and will deliver Mobile User Objective System satellite

communications service without needing additional hardware modules. Users can operate the radios on multiple networks simultaneously.

The radios also include an expansion slot for emerging and unique mission needs. The extra space provides room for potential upgrades such as higher speed wideband networking, satellite communications, and intelligence, surveillance and reconnaissance.

Theme Topic I Signal & Power Integrity (TC10) • Interconnects - Interconnect design and optimization; - Interconnect modeling and extraction; - Channel analysis• Power Distribution Network and Decoupling - PDN Design, analysis, simulation, modeling and measurement techniques - PDN optimization• Chip-level SI and PI - On-chip and off-chip high-speed signaling techniques; - 3-D IC, TSV, and Multi-Chip Modules• Tools and methodologies - Jitter/Noise/Crosstalk/BER; - De-embedding methodologies - TD and FD measurement techniques - Embedded test• Simulation and modeling techniques - High-frequency and electromagnetic simulation techniques - Simulation and measurement correlation - Advanced simulation tools/algorithms - Device modeling and characterization• System co-design - SI/PI for chip/package/board/connector / cable co-design - SI/PI co-analysis - System-level SI/PI/EMI co-design

PAPER TOPICSOF INTEREST

Topics include and are not limitedto the following technical areas.

2015 IEEE SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY & SIGNAL INTEGRITY

2015 IEEE SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY & SIGNAL INTEGRITY

CALL FOR PAPERS2015 IEEE SYMPOSIUM ON ELECTROMAGNETIC

COMPATIBILITY & SIGNAL INTEGRITY

CALL FORPAPERS

Technical Paper Chair: Prof. Chuck Bunting • charles.bunting@okstate.edu Technical Program Chair: Prof. Jun Fan • jun.fan@ieee.org

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Theme Topic IIEMC for Emerging Technologies (TC11, SCs)• Wireless EMC• Radio-Frequency Interference• Smart Grid EMC• Nano-Materials and Silicon Photonics• Unmanned Aircraft Systems EMC• Power Electronics EMCTheme Topic IIISpace EMC

EMC Management (TC1) - Personnel & Laboratory Accreditation - EMC Education - Legal IssuesEMC Measurements (TC2) - Test Instrumentation & Facilities - Measurement Techniques - Standards and RegulationsEM Environment (TC3) - EM Signal Environment - Atmospheric & Man-Made NoiseEM Interference (TC4) - Shielding, Gasketing & Filtering - Cables and Connectors - Circuit & System EMC Analysis - GroundingHigh Power Electromagnetics (TC5) - ESD & Transients - EMP, IEMI & Lightning - Information LeakageSpectrum Management (TC6) - Spectrum Management - Spectrum MonitoringLow Frequency EMC (TC7) - Power Quality and Conducted EMC - Power ElectronicsComputational Electromagnetics (TC9) - Computer Modeling Methods - Tools and Techniques - Validation Methods - Statistical Analysis

ALL ACCEPTEDPAPERS

will be Submittedfor Posting to IEEE Xplore.

Authors of accepted papers will be invited to submit an extended version of their

symposium paper for possible publication in a special issue of the IEEE Transactions on

Electromagnetic Compatibility.

emc2015_cfp_enr_mag.indd 2 8/25/14 9:54 AM

IEEE EMC Society Symposium Raleigh, North Carolina

At the ham radio operators luncheon, Miroslav Pajovic (WA6MP), Chris Reed (N7KKX), Geoff Day (K6GSA), and Gary Busch (W6GB).

This year’s IEEE EMC Society Symposium was held in Raleigh, North Carolina, named for Sir Walter Raleigh. Chaired by Bruce Archembault, about 1,200 attendees and 125 exhibitors networked and visited with old friends. Thank you to this year’s symposium committee members, including those pictured left, for their many hours and efforts devoted to make this year’s event a success. Next year’s symposium will be held March 15-21, 2015, in Santa Clara, California.

Smiling are Todd Hubing, Xiaong Ye, Mark Maynard, Dale Becker, John Lasalle, Colin Brench, Bonnie Brench and Bruce Archembault.

ENR’s Brenda Geary-Bucek

Explaining how the right gasket and joint surface avoids corrosion are Spira’s William Wantz, George Kunkel and Mike Kunkel.

Offering words of wisdom, EMI guru Bill Kimmel shares insights with Nathaniel Bucek who attended this year’s youth program.

Attendees enjoyed antique cars and entertainment at the welcome reception held at the Duke Energy Center for Performing Arts.

Developing cost-effective shielding solutions for customers are Leader Tech’s Ike Wintin and I/M/S’s Kate Perlini.

Sharing the Multi-Star Multi-tone test system’s capacity to simultaneously test up to 10 tones is AR’s Don Shepherd.

IEEE EMC Society Symposium Raleigh, North Carolina

Discussing a grounding solution, ARRL’s Ed Hare and NASA’s Ron Brewer take a few minutes to smile for ENR’s camera.

During dinner at the gala, attendees enjoyed scenes from the Andy Griffith Show before an evening of magic and other entertainment.

Welcoming attendees to Fischer Custom Communications’ booth with a smile and immense knowledge are Joe and Virginia Fischer.

Tackling demanding EMC projects are Cuming Lehman’s Steve Barnes, Randy Ryder, Jorgen Bruun, and Mark Lauzon.

Manufacturing a complete line of affordable EMI test equipment are A.H. Systems’ Art Cohen, Travis Samuels, and Jodi Henderson.

Providing materials and geometrics for EMI suppression are Fair-Rite’s Paul Zdanowicz and Robert Pothamus.

Providing EMI testing and engineering services are Retlif’s Bill Hayes and Jamel Latimore

Providing shielded enclosures and anechoic chambers, are Russ Lopez, Peggy Girard, Tom Foyill, Katie Daniel of Panashield.

IEEE EMC Society Symposium Raleigh, North Carolina

Providing video coverage with interviews at the show are Expresso Engineering’s Jason Scadron, Mike Violette, and Sam Violette.

Performing during the Engineer Showcase, EDN’s Martin Rowe entertained with his musical talent.

Visiting ENR at the show is speaker Tom Braxton of Shure Legendary Performance.

Providing current probes are Pearson’s Chris Waters, Colt James and Jeff Reed with speaker Ken Javor of EMC Compliance.

Discussing the developments in China are speaker Bob Hofmann of Hofmann EMC Engineering and Safety & EMC’s editor An Hao.

Providing testing for India’s new regulations, are EMT’s Simeet Gandi and Jay Gandi with Bharat Test House’s Vaibhav Gupta.

Awarding one of the many prizes from drawings at the show, DLS’s Jack Black congratulates Delphi’s Ricardo Quinones Acevedo.

Attending the show for the first time, U.S. Microwave Laboratories’ Claudia Fajardo provides affordable high-quality amplifiers.

Solar’s Useful Contraptions and Other Fancy Stuff to Aid and Assist the EMI Engineer

GIZMOS, Whatchamacallits and Thingamajigs**previously known as Indispensable Equipment and Useful Accessories**

SOLAR ELECTRONICS COMPANY • Innovative EMI Solutions Since 1960 • A Division of A.T. Parker, Inc. 10866 Chandler Boulevard, North Hollywood, California 91601 USA • (800) 952-5302 • (818) 755-1700 • Fax (818) 755-0078 • www.solar-emc.com • sales@solar-emc.com

The Type 6220-1A Audio Isolation Transformer is designed for series injection of audio voltages into power lines as required by Method CS-01 and CS-101, MIL-STD-461.

The secondary can carry up to 50 amperes at power frequencies. It includes a separate secondary for monitoring the injected voltage and comfortably handles 200 watts of audio. Higher current models are available.

The Model 2654-2 Lightning Transient Generator synthesizes electrical impulses needed for testing susceptibility to transients induced in aircraft equip-ment by lightning strikes.The peak voltage and current requirements of RTCA/DO-160E, Section 22 are met at Levels 1 through 3. Using available accessory probes, pulses can be applied by pin injection, cable bundle injection, and ground injection.

The Model 2854-1 Transient Generator is designed to meet the requirements of MIL-STD-461F, CS106. It provides 5 S 22% pulse with a 1.5 S 0.5 S raise time across a 5.0 ohm non-inductive resis-tor. Voltage is adjustable to greater than 600 volts. The undershoot is limited to less than 120 volts peak (maximum) and less than 20 S. The repeti-tion rate is variable and can be adjusted from 0.8 p.p.s. to 10 p.p.s. Single transients can be applied with the push button on the front panel.

The Model 8850-2 Power Sweep Generator has a 200 watt audio source for CS101 testing. Provides audio power in a manually tuned or sweeping mode in four bands cover-ing 20 Hz to 150 KHz. Frequency in KHz and output level in volts r.m.s. are displayed on digital meters. Provision is made for sensing the audio voltage injected into the EUT and displaying this level on the digital panel meter. Self-leveling maintains the injected signal level as frequency is scanned. Model 2352-1 200 Watt Audio Power Amplifier is also available.

The Model 9354-2 CS116 Transient Generator provides nine selectable waveforms, including six damped sinusoidal pulses (10 KHz, 100 KHz, 1 MHz, 10 MHz, 30 MHz, and 100 MHz) and three double exponential pulses (6.4 S, 70 S and 120 S).

For the damped sinusoidal waveforms, the repetition rate is internally adjusted from 0.5 to 2.0 pulses per second. A panel-mounted push button can be used for manually triggering single pulses. The peak amplitude of the selected output pulse is adjustable as a percentage of the charge voltage. The open circuit discharge voltage is displayed on the panel-mounted digital voltmeter.

The six damped sinusoidal waveforms were designed to meet the requirements of MIL-STD-461F, CS116.

Two of the six damped sinusoidal waveforms (1 MHz and 10 MHz) have their limits extended to an open circuit voltage of 3200 volts and a short circuit current of 128 amperes to meet the require-ments of DO-160F, Section 22, Table 22-2, for waveform 3 to level 5.

The Model 9355-1 CS115 Pulse Generator provides a 35 nanosecond pulse with a rise and fall time of less than 2 nanoseconds into 50 ohms as described in MIL-STD-461F, CS115. The charged line potential is adjustable from less than 10 volts to greater than 1200 volts. The repetition rate is variable from less than 1 up to 150 pps. Digital display provides for monitoring the charging voltage and pulse repetition rate.

We like to helppeople like you!Our updated Web site shows a large variety of instruments, acces-sories and useful devices to make EMI test setups easier and manageable. Helpful application notes are included where needed and can be downloaded if you wish.

We’re easy to reach— just choose one of the methods at the bottom of the page. We look forward to hearing from you! PRODUCTS FOR MIL-STD-461F

To facilitate testing to the test methods of MIL-STD-461F, special instruments and ancil-lary items are available. This includes delta and wye connected ten microfarad capacitor assemblies, precision resistors, loop antennas, injection probes, current probes, and LISNs, in addition to the instruments briefly described above. We provide items for test methods CE101, CE102, CS101, CS106, CS109, CS114, CS115, CS116, RE101, RE102, RE103, RS101, RS103 and RS105. Each item has been expressly designed with the test engineer in mind to make the test setups easier to configure.Partial lists of available probes and LISNs are included on our Web site, but newly designed versions become available every working day as a result of our on-going development program. Ask for the latest lists.

We offer a large variety of EMI Current Probes and Bulk Current Injection Probes. They are designed for full compliance withMIL-STD-461F, RTCA DO-160E and many other specifications.

Frequencies from 1.0 KHz to 1.0 GHz. Transfer impedance from .001 to 10 ohms.

See our Web site for a comprehensive list with full technical details. New designs are being added daily.

The Type 6512-106R 10 Microfarad Feed-thru Capacitor fills a vital need in all screen room setups as required by EMI specifica-tions. Rated at 600 volts d.c. and 250 volts r.m.s., it will carry power currents up to 100 amperes.

Other models are available up to 500 volts r.m.s. and up to 500 amperes.

Meets the requirements of SAE document ARP-936.

ACCESSORIES OF ALL KINDSLine Impedance Stabilization Networks, Loop Antennas, Wave Filters, Coupling Networks, Resistive Networks, High Voltage Spike Transformers, Line Isolation Transformers, and many other useful and necessary items.

** Equipment for Transient Immunity Tests and EMI Emission Measurements

Solar Electronics founder A.T. Parker in the field, measuring radio transmissions with a Stoddart NM-20 EMI receiver (c. 1949)

Electromagnetic News Report September / October 2014 Electromagnetic News Report

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September / October 2014

EMC NOTEBOOK

Need Multilayer Boards?

By William D. Kimmel, PE and Daryl D. Gerke, PE

Kimmel Gerke Associates, Ltd.

In past articles, we have discussed the virtues of the multilayer circuit boards. But this goes against the grain of those who work in highly cost sensitive applications. With low production volumes, piece part costs are of little consequence – nonrecurring costs dominate. But with high volume applications, even a penny per unit becomes a significant factor – shave a penny from each of 10 million units times one penny, and the savings is $100,000. High production volumes dominate in automobile and consumer goods. The automobile has hundreds of special circuit boards scattered all over the vehicle, but you’ll have to look hard to find a multilayer board – actually, single sided boards are common. So what are the determining factors in demanding multiple layers?

The Magic in Multilayer Boards

The ground plane in multilayer boards performs it’s magic by providing low impedance ground return paths and by facilitating small loop areas. The result is two-fold – low inductance current paths and low magnetic field coupling. The principle result of the low impedance path is reduced voltage drop along the path, especially at high frequencies. Ground impedance of a plane is far lower than that of a circuit board trace. Using our rule-of-thumb that inductance of a wire or trace is approximately 8nH/cm, we compute the impedance at 100MHz to be approximately 5 ohms. The impedance of a ground plane is approximately that of one square which, at 100MHz is approximately 10 milliohms – 1/1000th that of even a short trace. This is an amount that is impossible to ignore. As an example, figure 1 shows what happens when an interference current travels along a ground path. Let’s assume we have an ESD current of 1 amp (much less than a full ESD hit). This will drop approximately 80 volts along a one cm ground trace, an amount unacceptable in virtually every case. But the voltage drop along the ground plane will be about 10 millivolt, acceptable in almost all

cases. This ground impedance creates a similar situation, where voltage in a clocked signal return path creates on-board common mode voltage which, left unchecked, will cause currents to take an alternate path along ground to the outside world. Yes, the amount of current is small, but it doesn’t take many microamps to create an emission issue. The second aspect is reduction of loop area (figure 2). Traces routed close to the ground return are automatically small loop area. Faraday’s law says that magnetic field coupling is proportional to the loop area, Small loop areas minimize coupling to and from the loop. Thus, magnetic fields crosstalk to adjacent traces and nearby off-board loops. It is to your benefit to keep loop areas to a minimum, which is greatly facilitated with a ground plane, but are very dificult to minimize without an adjacent ground plane.

So What To Do?

EMI problems mostly involves wires entering or leaving the circuit board, including signal lines, ground lines and power lines.

Ultimately, the goal is to reduce ground bounce. This can be done in two ways – reducing ground impedance and reducing current on ground. Let’s start with reducing ground impedance. While we don’t have a ground plane, per se, we do have a copper layer, some of which may be allocated for ground purposes. Anything we can do to widen the ground path, shorten the path length, and run the signal trace over the ground will reduce the path inductance. Since we don’t have unlimited real estate, we need to be smart about allocating more copper for the critical paths. So the first order of business is to identify the key paths: For immunity, the key lines are input signal lines, which will need to be protected by filtering or transient protection. This means we need to have a low impedance path from signal to signal ground. A common filter includes a capacitor in this path – accordingly we need to minimize the inductance along the way. If you can put the capacitor immediately between the signal pin and chip ground, you don’t need to allocate any copper at all,

This is easy to do when the ground pin is adjacent to the signal pin, but difficult if you are filtering a number of signal pins. In such a case, your best choice is to keep the path length from signal to ground as low as possible, then fatten up the trace to keep series inductance as low as possible. For emissions, there are two possibilities – emissions from the signal pins and emissions on ground pins. Dominant signal lines are output pins, especially those carrying direct periodic clock or bus energy. Clock noise on the power rails will inevitably show up on output pins, no matter what the signal does. In such cases, low impedance filter path from signal output pin to chip ground is mandatory, using the same considerations as with the input pins cited above. Just to note that hanging a capacitor from low impedance driver to ground is not adviseable – put some series impedance (resistance or ferrite) immediately at the output pin. The other possibility is common mode, which is more general in nature. At the circuit board level, common mode interference is primarily caused by ground

Figure 1. Ground Bounce in Inductive Trace

Figure 2. Loop Areas in Mulitlayer and Two-Layer Boards

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September / October 2014

impedance, specifically that involving the return path of periodic signal lines, notably clock and data buses. Here it is imperative that the key path lengths be kept as short as possible, and that the ground path be continuously under the signal path and as wide as possible. Note that common mode noise goes out the ground path – signal filtering is irrelevent – the ground currents must be minimized, and the residual blocked with the use of ground impedance, usually involving common mode chokes. Considering these possibilities, figure 3 shows the key issues in two layer board design, which involve keeping loop areas small, maximizing ground area, and selectively filtering key signals and power paths.

1. Parallel feed power and ground, wide strips2. Guard traces for clock driver and critical circuits3. Ferrite isolation for power feed to micro and I/O4. Resistor damper on clock lines5. I/O filtered back to driver chip6. Grounded Crystal or Resonator7. Ground fill or grid

In simpler PCB applications (see figure 4) is an approach we call “Micro-island.” Here we have a single chip, common enough in today’s electronics – processor,

Figure 4. “Micro-Island” Ground Patch

Figure 3.

memory and I/O. Typically, there will be a shortage of ground pins, generallly no more than one per side. We allocate a copper patch under the foodprint of the chip, ensuring low ground impedance no matter what pins are involved. Each pin entering or leaving the board is at risk – power, signal in, signal out and ground. A T-filter is employed for bi-directional signal paths – allowing for the fact that input pins are most vulnerable to external interference and output pins are most vulnerable for emissions. Depending on the need, we may want to insert series impedance in the ground wires entering and leaving the board, as well.

Summary

The key EMI problems associated with two sided boards can be minimized with careful attention to ground impedance. Keep critical signal paths as short as possible, with a continuous fat return path underneath. Keep inductance in filter capacitors as low by keeping leads as short as possible. Keep as much copper on the board as possible to facilitate low ground impedance.

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PRODUCT NEWS

Extremely Fine Stainless Steel Microetch® Screens Fine MicroEtch® Screens from stainless steel are manufactured by Tech-Etch using photo etching

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Desktop Amplifiers with Rechargeable Battery MITEQ’s TTA Series of high performance broadband low noise amplifiers were specifically developed for EMC compliance testing. The TTA series is a new

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Electromagnetic News Report

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September / October 2014

EMC & SI 2015 Symposium will be striving to “Keep Interference at Bay” by providing the most current information, tools and techniques

on EMC testing and signal and power integrity.

• Attend concurrent workshops, tutorials and demonstrations to learn the latest innovations in EMC & Signal Integrity.• Participate in some of the many industry and professional meetings to take your participation to the next level.• Visit the Exhibit Hall with hundreds of booths filled with the latest products, equipment and services.• Greet old friends, meet new friends, experts, and colleagues at numerous formal and informal networking functions.• Interns and newly graduated EE/EMC engineers will have the chance to learn from the more experienced and participate in Young Professionals activities.

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3Gmetalworx Solution, WaveSeal 3Gmetalworx Inc., a leading supplier of PCB-level shielding solutions and microwave absorbers, is now offering Waveseal, their new line of conductive EMI shielding gaskets for enclosure applications. Waveseal is a comprehensive line of EMI shielding gaskets consisting of fabric over foam, conductive foam, conductive elastomers, wire oriented, knitted wire, and combination gaskets which provide excellent shielding performance and value to engineers and procurement professionals looking for a reliable and trusted supply chain partner. 3Gmetalxorx, in business since 1994, can now provide application specific solutions on the PCB with their 3G shields and within the enclosure with their Waveseal EMI gaskets and Wavexorb RF absorbers. Visit www.3gmetalworx.com.

Transmitter Compliance Testing Tektronix Inc. is offering a cost-effective compliance transmitter test solution for the Project 25 (P25) Common Air Interface (CAI) Phase 1 and Phase 2 standard. The new software gives RF test engineers and safety agencies the convenience of push-button measurements with automated pass/fail reporting and runs on Tektronix spectrum analyzers, all Tektronix Windows-based oscilloscopes, and SignalVu-PC linked with the MDO4000B mixed domain oscilloscope series.

P25 is a Land Mobile Radio (LMR) standard developed by the TIA-102 (Telecommunications Industry Association) and is used primarily by North American and Australian public safety and government organizations to provide interoperability among various

agencies. With Phase 2 in the early phases of deployment, there is a growing need for cost-effective, easy to use test solutions to verify P25 standards compliance and perform troubleshooting as problems arise. For more information, visit www.tek.com.

Electromagnetic News Report September / October 2014 Electromagnetic News Report

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September / October 2014

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Low Noise EMC Preamplifier with Built-in Battery U.S. Microwave Laboratories has released the USMC0125, its latest low noise broadband preamplifier that covers 1 MHz to 2500 MHz, providing 30dB of flat gain, very low noise figure, and an optional built-in battery and smart charger for more than 20 hours of field operation. The USMC0125 measures 6.5 x 4.25 x 2.25 inches and it is IP65 compliant for use in wet environments. Connector options include BNC, SMA and N type. The unit comes with rubber feet or a mounting bracket with slots for four screws. The USMC0125 is the ideal preamplifier for EMC testing and certification. The low noise figure and high gain of the USMC0125 permits the visualization of signals that would otherwise appear below the noise floor in a radiated emissions test.

An AC-powered desktop power supply is provided to power the unit and to charge the internal battery. The power supply can operate from 90 to 264VAC, 47 to 63Hz. A power cord with either U.S. or European standard plugs is included. The externally powered unit can operate from 7 to 28VDC. For more information, visit www.usmicrolabs.com.

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RFI Shield Cans Deliver RFI/EMI Screening HARWIN EZ-BoardWare EZ RFI shield cans provide improved RFI and EMI protection to sensitive circuitry at the printed circuit board (pcb) level, when used with firm’s EZ-BoardWare RFI shield can clips, Because the cans are mounted by simply pushing them into the surface mount clips, installation costs are minimized since there is no secondary processing required. Devices be easily removed for inspection/repair/rework with no fear of

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TDEMI M Mobile EMI Receiver The TDEMI M product line from GAUSS Instruments is a very compact designed instrument for mobile use outdoors and inside labs on the developer workbench providing a variety of functionalities. By a standard +12V

supply, it can be easily used for onboard testing such as in vehicles or aircrafts. Designed for pre-certification tasks, the TDEMI

Mobile (TDEMI M) provides the unrivaled advantages in speed and performance of the well-known and approved real-time signal processing and microwave technology of GAUSS Instruments. Thus, pre-certification investigations can be performed up to 4,000 times faster than by conventional receivers. The instruments can be ordered for frequency ranges up to 1GHz, 3GHz or 6GH starting from 9kHz or with MIL/DO option even starting from 10Hz. For more information, contact Anneliese Krieger, GAUSS Instruments, phone +49 89 5 5404699 0, email: info@dtdemi.com or visit www.gauss-instruments.com.

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Electromagnetic News Report September / October 2014

Page 24

CALENDAR

Call for Papers

Deadline: October 19 IEEE EMC Society Symposium on Electromagnetic Compatibility & Signal Integrity, March 15-21, Silicon Valley, California. Electronically submit a brief abstract describing the proposed paper’s main points. Submissions are reviewed anonymously, so please do not include author names and affiliations on preliminary manuscript. For more information, visit www.emc2015usa.emcss.org.

Deadline: November 1 Asia-Pacific International Symposium on Electromagnetic Compatibility, May 26-29, The Grand Hotel, Taipei, Taiwan. Electronically submit a brief abstract describing the proposed paper’s main points with name, affiliation, and contact information to dblin@ntut.edu.tw. For more information, visit www.apemc2015.org.

Deadline: November 1-January 30 IEEE EMC Society Symposium on Electromagnetic Compatibility and EMC Europe, August 16-22, Congress Center Dresden, Dresden, Germany. Electronically submit a brief abstract describing the proposed paper’s main points. Submissions are reviewed anonymously, so please do not include author names and affiliations on preliminary manuscript. For more information, visit www.emc2015.org.

Meetings and Symposia

November 10-11 – 2014 Loughborough Antennas and Propagation Conference, Burleigh Court International Conference Centre, Loughborough, Leistershire, U.K. Includes antenna design and theory; electromagnetic bandgap materials and frequency-selective surfaces; indoor, outdoor and ionspheric propagation; and filters, phase shifters, switches, feeds and matching networks for antennas. Info: Visit www.lapconf.co.uk.

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OVERVIEW With trillions of dollars having been invested in electricity, it’s no secret that it’s a key mechanism for carrying out most of our operations and day-to-day activities. However, wires and batteries (the traditional tools for enabling electricity transfer) are cumbersome, and as the number of devices continues to increase, managing wires and identifying outlets will only become more difficult. Kaynam Hedayat of WiTricity will explain how wireless electricity addresses these challenges by providing a seamless, easy way to charge.

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in U.S.$ million by the following product segments: conductive coatings, conductive plastics, metal cabinets, laminates/tapes, and others. The report provides separate comprehensive analytics for the U.S., Canada, Japan, Europe, Asia-Pacific, Middle East, Latin America. Annual estimates and forecasts are provided for the period 2013 through 2020. Also, a seven-year historic analysis is provided for these markets. Market data and analytics are derived from primary and secondary research. Company profiles are primarily based on public domain information including company URLs. The report profiles 59 companies including many key and niche players such as 3M Co., AI Technology, Inc., Alco Technologies, Inc., Coilcraft, Inc., and Cybershield, Inc. For more information, visit www.giiresearch.com.

Enclosure Shielding Catalog Just Released Virtually all electronic enclosures have seams, openings and gaps that allow unwanted EMI to escape if they are not properly shielded. Leader Tech’s new EMI Enclosure Shielding Solutions catalog provides engineers with a single reference source for thousands of EMI gaskets and material options. In addition to a large selection of beryllium copper fingerstock gaskets, the brochure features a full line of MIL-SPEC approved conductive elastomers, numerous fabric shielding and conductive foam gasket profiles as well as 145 variations of oriented and knitted wire gaskets. With the support of highly trained applications engineers and the resources of the company’s Global EMI Shielding Technology Center in Tampa, Florida, customers can order products from stock or create custom die-cut patterns and gasket profiles for their unique shielding applications. The expanded product catalog also offers detailed

engineering information including product comparisons, common applications, product specifications and performance data. Leader Tech’s Enclosure Shielding Solutions catalog is available for immediate download at http://www.leadertechinc.com/emicatalog/. For more information, contact Tracy Kuhns, global director of sales, Leader Tech, 12420 Race Track Rd., Tampa, FL, 33626, phone: 1-813-855-6921, email: tkuhns@leadertechinc.com.

Electromagnetic News Report September / October 2014

Page 26

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December 1-4 – 2014 Global Symposium on EMC, Safety and Product Compliance Engineering, David Intercontinental Hotel, Tel-Aviv, Israel. Includes research, “war stories”, case studies, EMC and safety knowledge and discoveries with workshops, tutorials, “Birds of a Feather” panels, and an EMC, safety and product compliance related technical exhibition. Info: Visit http://globespace.org.

December 2-5 – 84th ARFTG Conference, The New Frontiers for Microwave Measurements, St. Julien Hotel, Boulder, Colorado. Experts present the latest developments in linear and nonlinear RF and microwave measurement techniques at this RF and microwave test and measurement conference. Info: Visit www.arftg.org/conferences/ 84th_conference.html.

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February 25-26 – 13th International Conference on Electromagnetic Interference & Compatibility, Andhra University, Visakhapatnam, India. Topics include cover the entire scope of electromagnetic compatibility. Info: Visit http://incemic.org.

March 15-21 – 2015 IEEE Symposium on Electromagnetic Compatibility & Signal Integrity, Santa Clara Convention Center, Santa Clara, California. Symposium provides excellent resources for EMC, design, and compliance engineers. Technical program offers EMC information with papers backed by solid research and development by industry-leading experts. Workshop provides practical real-world tools fo engineers and technicians dealing with EMC. Exhibition shows the largest array of EMC products and services. The Global EMC University provides continuing education credits. Includes Signal Integrity/Power Integrity conference. Info: Visit www.emc2015usa.emcss.org.

March 24-26 – EMV 2015, Düsseldorf Congress CCD, Landesmesse Stuttgart ICS Internationales Congresscenter, Stuttgart, Germany. This international conference and exhibition on electromagnetic compatibility offers a wide range of EMC-related topics. Info: http://www.mesago.de/en/EMV/The_ Conference/Welcome/index.htm.

May 26-29 – Asia-Pacific International Symposium on Electromagnetic Compatibility, The Grand Hotel, Taipei, Taiwan. Shares recent advances in all aspects of EMC in the Asia-Pacific region to respond to the EMC requirements for all rising technologies and to closely link up the international EMC community. Info: Visit www.apemc2015.org.

June 9-12 – 11th IEEE International Conference on Power Electronics and Drive Systems, Hilton Sydney Hotel, Sydney, Australia. Includes EMI/EMC issues and is one of the major series of conferences in power electronics and drive systems. Info: Visit www.ieee-peds.org.

August 16-22 – 2015 IEEE Symposium on Electromagnetic Compatibility and EMC Europe, Congress Center Dresden, Dresden, Germany. Symposium provides excellent resources for EMC, design, and compliance engineers. Covers all aspects of EMC and technologies that are affected by EMC (including but not limited to shielding, ESD, automotive, broadcast, military, wireless, smart grid, and power transmission). Info: Visit www.emc2015.org.

November 24-25 – International Conference on Electromagnetic Processing of Materials, Dubai, United Arab Emerites. Brings together leading academic scientists, researchers and research scholars to exchange and share their experiences and research results about all aspects of Electromagnetic Processing of Materials. Info: Visit www.waset.org/conference/2015/11/ dubai/ICEPM.

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