Antenna Matching Transformers - ctsminns · The HF50 is a unit of the highest quality and...

Antenna Matching Transformers• TA Series•HF Series•High Power HF Broadcast•HF 100 Balanced/Balanced 300/600

DiplexerContents

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Measuring Transformer•50/600 VDC Series 10

Hybrid Splitters/Combinders•3 Port Low Signal MHFH2-RX•5 Port Low Signal MHFH4-RX•HFH6-50/B 6x50 Watt Combiner•HFH2-1 2x1kW Hybrid Combiner•HFH2-2 2x2kW Hybrid Combiner•HFH4-1 4 x 1kW Hybrid Combiner•HFH2-10 2 x 10kW Hybrid Combiner

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Resistive Load• Type RL100-5 15

Welcome to South Midlands Communications online CTS product catalogueSMC manufacture and design the CTS brand of HF broadband ferrite matching transformers, hybrids, multicouplers, filters and associated products introduced by CTS since its formation in 1987.

The business and products of Minns Baluns Ltd was absorbed into the range in 1998. All enquires for products on this website (www.ctsminns.co.uk ) should be addressed to SMC. Our sales team will be more than happy to chat with you regarding your requirements.

Multicouplers•HFM2-1 2x1kW Multicoupler•HFM2-2 2x2kW Multicoupler•HFM2-5 2x5kW Multicoupler•HFM2-10 2x10kW Multicoupler•HFM2-20 2x20kW Multicoupler

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Directional Couplers/Diplexer•HFC1-30 1kW Directional Coupler•HFC10-26 10kW Directional Coupler•HFC30-26 30kW Directional Coupler•HFM2-2A Diplexer

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•Picture Gallery 23

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Antenna Matching Transformers

The TA series of transformers are rugged and lightweight, ideal for inclusion in transportable HF antenna systems. Combinations of power rating and impedance transformation ratio provide the antenna designer with a wide selection of units to complement most antenna configurations.

• Broad band 1.5 to 32 MHz• Power - 50 Watt to 1 kW• Lightweight fibreglass body• Transportable application

The transformers are housed in extremely strong fibre glass bodies, hermetically sealed with low loss resin and suitable for any environment. The input coaxial connector is protected within the specially formed body and the transformer itself is grounded as an added protection against static and lightning induced EMF’s. A spigoted version, type TAS, is available for use with the SMC range of masts.

Specs InformationFrequency 1.6 - 32 MHz

Input Impedance 50 Ohm unbalanced

Output Impedance See above

Average Power 50 W, 150 W, 400 W, 1 kW

Max Peak 4 X Average power

VSWR Less than 1.3 : 1

Max. load VSWR 3 : 1

Insertion loss Less Than 0.25 dB

Balance ratio Greater than 26 dB

Temperature range -40ºC to +70ºC

Connectors BNC, N, UHF, C

Configuration Fibre glass body Stainless Steel arms (chemically black-ened).Low loss resin fill. Epoxy paint finish.

TA5av. power: 50 Watt i/p imp: 50 Ohm unbalanced

50 Ohm TA5-55

75 Ohm TA5-57

200 Ohm TA5-520

300 Ohm TA5-530

370 Ohm TA5-537

450 Ohm TA5-545

600 Ohm TA5-560

800 Ohm TA5-580


50 Ohm TA15-55

75 Ohm TA15-57

200 Ohm TA15-520

300 Ohm TA15-530

370 Ohm TA15-537

450 Ohm TA15-545

600 Ohm TA15-560

800 Ohm TA15-580


50 Ohm TA40-55

75 Ohm TA40-57

200 Ohm TA40-520

300 Ohm TA40-530

370 Ohm TA40-537

450 Ohm TA40-545

600 Ohm TA40-560

800 Ohm TA40-580

TA100av. power: 1kW i/p imp: 50 Ohm unbalanced

50 Ohm TA100-55

75 Ohm TA100-57

200 Ohm TA100-520

300 Ohm TA100-530

370 Ohm TA100-537

450 Ohm TA100-545

600 Ohm TA100-560

800 Ohm TA100-580

TAS40av. power: 400 Watti/p imp: 50 Ohm unbalanced

50 Ohm TAS40-55

75 Ohm TAS40-57

200 Ohm TAS40-520

300 Ohm TAS40-530

370 Ohm TAS40-537

450 Ohm TAS40-545

600 Ohm TAS40-560

800 Ohm TAS40-580

TAS100av. power: 1kW i/p imp: 50 Ohm unbalanced

50 Ohm TAS100-55

75 Ohm TAS100-57

200 Ohm TAS100-520

300 Ohm TAS100-530

370 Ohm TAS100-537

450 Ohm TAS100-545

600 Ohm TAS100-560

800 Ohm TAS100-580

TA Series - HF Antenna Matching Transformers

All specifications are that of typical performance.

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All CTS Fixed Station Balun Transformers are housed in purpose designed heavy duty aluminium casings with either solid impregnation or silicone oil cooling.

Any combination of power and impedance ratio can be supplied across the frequency spectrum 10 kHz - 32 MHz providing the most comprehensive range available to antenna designers. Further specifications available on request.

General Features:• Broad Band 10 kHz - 2 MHz/1.5 - 32 MHz• Power 400 W - 30 kW• Very high efficiency• All-weather unprotected operation• Cast aluminium housing

Select a technical specification for the following models on the left.

Fixed station HF receiving arrays are often subjected to high voltages not normally associated with RX systems. These voltages can be present due to static build up or by lightning induced EMF’s from nearby strikes.

The HF4 series of matching transformers, although designed for 400 Watt average power are ideal for inclusion in receiving arrays. They reduce the possibility of high voltage damage and provide a DC path to the ground which gives added protection to the receiving system.

• Wide band 1.5 to 32 MHz• Ideal for fixed station receiving arrays• Internal static drain ground

A wide selection of balanced and unbalanced impedance ratios are available to complement most antenna configurations and non-standard ratios can be supplied on request.

The transformers are housed in cast aluminium cases, fully hermetically sealed for any military or commercial environment. For EMP proof operation no capacitors are incorporated.

Balanced Impedance (ohm)

Unbalanced impedance (ohm) 50 75 200 300 370 450 600

50 HF4-55 HF4-57 HF4-520 HF4-530 HF4-537 HF4-545 HF4-560

75 HF4-75 HF4-77 HF4-720 HF4-730 HF4-737 HF4-745 HF4-760

Technical Specs.Frequency: 1.5 - 32 MHz

Impedance: See table above

Power: 400 Watt average, 1600 Watt peak

Insertion loss: Less than 0.3 dB

VSWR: Less than 1.2:1 (2 - 30 MHz), Less than 1.3:1 (1.5 - 32 MHz)

Balance ratio: Greater than 26 dB

Load VSWR: 2.5:1 max.

Coaxial connectors: 'N' type (Others on request)

Balance terminals: Alumina ceramic M6 thread

Temperature range: -40ºC to +55ºC

Weight: 1.2kg gross

High voltage protection: Arcing horns and internal static drain (NB No internal capacitors fitted.)

Configuration: Cast aluminium case (LM25). Hermetically sealed. Epoxy paint finish.

Shipping dimensions: 220 x 150 x 120 mm approx.

HF Series Fixed Station Balun Transformers

HF4 Series 400 Watt HF Wide Band Antenna Matching Transformer


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The HF10 series of antenna matching transformers are fully encapsulated heavy duty units designed for the most arduous environmental conditions.

The transformers are housed in a cast aluminium case, vacuum impregnated with epoxy resin and finished in epoxy paint for added protection. High purity alumina ceramic insulators with arcing horns are fitted as standard and an integral static drain to earth provides additional protection against lightning induced EMF’s.

• Wide band 1.5 to 32 MHz• 1 kW average, 4kW PEP• All weather solid encapsulated• Fixed station or transportable antenna arrays

For added EMP proof operation no capacitors are used in the transformer circuit. A wide selection of unbalanced and balanced impedance ratios are available to complement most antenna configurations and enquiries for non-standard arrangements are welcome. No compromise has been made to provide a unit of the highest standard of reliability


Unbalanced impedance (ohm) 50 75 100 200 300 370 450 600

50 HF10-55 HF10-57 HF10-510 HF10-520 HF10-530 HF10-537 HF10-545 HF10-560




Power: 1kW average, 4kW peak





Coaxial connectors: 'N' type (Others on request)



Weight: 5kg gross



Shipping dimensions: 425 x 300x 150 mm approx.

HF Series Fixed Station Balun Transformers cont...

HF10 Series - 1kW HF Wide Band Antenna Matching Transformer



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The HF30 series of antenna matching transformers are solid encapsulated heavy duty units suitable for the most arduous environmental conditions and designed for installation in any orientation.

The transformers are housed in a cast aluminium case, vacuum impregnated with epoxy resin and finished in epoxy paint for added protection. High purity alumina

ceramic insulators with arcing horns are fitted as standard. An internal static drain to earth provides additional protection against lightning induced EMF’s.

• Wide band 1.5 to 32 MHz• 3 kW average, 12kW PEP• All weather solid encapsulated• Heavy duty cast aluminium case

For added EMP proof operation, no capacitors are used in the transformer circuit. A wide selection of unbalanced and balanced impedance ratios are available to complement most antenna configurations and enquiries for non-standard arrangements are welcome.

The HF30 is a unit of the highest quality and reliability.


Unbalanced impedance (ohm) 50 75 100 200 300 450 600

50 HF30-55 HF30-57 HF30-510 HF30-520 HF30-530 HF30-545 HF30-560

75 HF30-75 HF30-77 HF30-710 HF30-720 HF30-730 HF30-745 HF30-760



Power: 3 kW average, 12kW peak





Coaxial connectors: 7/8"EIA (Others on request)



Weight: 14kg gross







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The HF50 5kW series are solid encapsulated and suitable for installation in any orientation.

The transformers are housed in a heavy duty cast aluminium case, vacuum impregnated with epoxy resin and fully hermetically sealed for any military or commercial environment.

• Wide band 1.5 to 32 MHz• 5 kW average, 20kW Peak• All weather solid encapsulated• Heavy duty cast aluminium case

High purity alumina ceramic insulators with arcing horns are fitted as standard and an internal static drain to earth provides additional protection against lightning induced EMF’s.

A wide selection of unbalanced and balanced impedance ratios are available to complement most antenna configurations and enquiries for non-standard arrangements are welcome.

The HF50 is a unit of the highest quality and reliability.







Power: 5 kW average, 20 kW peak





Coaxial connectors: 7/8"EIA (Others on request)



Weight: 38kg gross

High voltage protection: Arcing horns and internal static drain






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The HF100 series are 10 kW average power silicone cooled transformers suitable for communication or broadcast systems.

The units are housed in a finned cast aluminium tank which provides excellent natural convection cooling. Each casting is subjected to a double vacuum resin impregnation process which ensures complete sealing for the internal low loss silicone cooling oil.

• Wide band 1.5 to 32 MHz• 10 kW average + 100% AM modulation• Suitable for communications or broadcast applications• Very high efficiency• All weather unprotected operation

High purity alumina ceramic insulators with arcing horns are fitted as standard and an integral static drain to earth provides additional protection against lightning induced high voltages.


The HF100 is a high quality unit suitable for unprotected operation in any environment



Power: 10 kW average + 100% AM modulation





Coaxial connectors: 7/8", 1 5/8", 3 1/8" EIA



Weight: 60kg gross



Cooling: Natural convection, silicone transformer oil, pressure relief valve fitted.









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The HF200 series are 20 kW average power transformers suitablefor communications or broadcast systems.

The units are housed in a finned cast aluminium tank which provides excellent natural convection cooling. Each casting is subjected to a double vacuum resin impregnation process which ensures complete sealing for the internal low loss silicone cooling oil.

High purity alumina ceramic insulators with arcing horns are fitted as standard and an internal static drain to earth provides additional protection against lightning induced high voltages.

• Wide band 1.5 to 32 MHz• 20 kW average + 100% AM modulation• Suitable for communication or broadcast application• Very high efficiency• All weather unprotected operation

A wide selection of unbalance and balance impedance ratios are available to complement most antenna configurations and enquiries for non-standard arrangements are welcome. The HF200 is a high quality unit suitable for unprotected operation in any environment. The HF200 Series supersedes all Minns “Y” types of 20kW transformers.












Coaxial connectors: 1 5/8", 3 1/8" EIA



Weight: 110kg gross








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The HF300 series are 30 kW average power silicone cooled transformers suitable for communication or broadcast systems.

The units are housed in a finned cast aluminium tank which provides excellent natural convection cooling. Each casting is subjected to a double vacuum resin impregnation process which ensures complete sealing for

the internal low loss silicone cooling oil.

High purity alumina ceramic insulators with arcing horns are fitted as standard and an integral static drain to earth provides additional protection against lightning induced high voltages.

• Wide band 1.5 to 32 MHz• 30 kW average + 100% AM modulation• Suitable for communications or broadcast applications• Very high efficiency• All weather unprotected operation


The HF300 is a high quality unit suitable for unprotected operation in any environment.








Coaxial connectors: 3 1/8" EIA



Weight: 120kg gross










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The 50kW and 100kW series of broadcast antenna matching transformers are suitable for inclusion in systems where 200 ohm or 300 ohm open wire feeds need to be matched to a 50 ohm coaxial feeder. The units are housed in aluminium tanks, silicone oil cooled to minimise losses and a major feature is broad band operation without the use of ferrite material in the transformer design.

• 50kW average, Type HF500• 100kW average, Type HF1000• 100 kW Average + 100% AM Mod• Broad band 3-22 MHz• Very low loss• All-weather unprotected operation

These antennas require small size broad band matching networks and CTS offers the HF 1000 range providing 200 or 300 Ohm balanced outputs.


Input Impedance: 300 ohms balance

Output Impedance: 200 ohm or 600 ohm balance

Power: 10 kW average +100% AM modulation







Weight: 60kg gross

High voltage protection: Arcing horns


Cooling: Natural convection, silicone transformer oil, presuure relief valve fitted.


High Power HF Broadcast Antenna Matching Transformer

HF500/HF1000 High Power Series

HF100 300/600 High Power Balanced/Balanced Matching Transformer

Technical Specs.Frequency: 3 - 22 MHz

Input Impedance: 50 ohms unbalanced

Output Impedance: 200 ohm or 300ohm balanced

Power: HF500 - 50kW average + 100% broadcast mod HF1000 - 100kW average + 100% broadcast mod


VSWR: Less than 1.2:1



Coaxial connectors: 3 1/8” and 6 1/8” EIA


Temperature range: -40ºC to +55ºC shade recom-mended

Weight: 450kg gross

High voltage protec-tion:

Arcing horns and internal static drain

Configuration: Aluminium tank, silicone oil cooled, pressure relief valve fitted

High Power Balanced/Balanced Matching Transformerd



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Measuring Transformer

• Wide band operation models for• 20Hz - 20kHz

• 100Hz - 200kHz• 50kHz - 10MHz

• 1.5 MHz to 32 MHz• 1 Watt Average

• 2 Watts PEP• Fully encapsulated

The Minns Baluns VDC Series are designed for precision measurement purposes where 50/600 ohm transformation is required with low VSWR and high balance ratio.

All the measuring transformers are fully encapsulated within a cast aluminium case to provide a high stability product capable of withstanding the most severe environment.

Technical Specs.

Frequency Range See Table Above

Unbalanced Impedance: 50 ohms

Balanced Impedance: 600 ohms

Power Rating: +10dBm


VSWR: See Table Above

Balance ratio: See Table Above

Balance Connection: M6 Insulators

Unbalanced Connection: See Table Above


VDC 50/600 Ohm Low Power Wide Band Measuring Transformers

Type Designations for VDC Series and Technical Specification


Standard Frequency Ranges Balanced Terminals Balance Ratio VSWR BNC’ N’ UHF’

20Hz - 20kHz Ceramic M6 >12dB 1.1 : 1 VDC08A VDC08B VDC08C

100Hz - 200kHz Ceramic M6 >50dB 1.1 : 1 VDC05A VDC05F VDC05G

50kHz - 10MHz Ceramic M6 >40dB 1.1 : 1 VDC06A VDC06F VDC06G

1.5MHz - 32MHz Ceramic M6 >26dB 1.1 : 1 VDC02B VDC02A VDC02C


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Hybrid Splitters/Combinders

• Wide band operation models for• 20Hz - 20kHz

• 100Hz - 200kHz• 50kHz - 10MHz

• 1.5 MHz to 32 MHz• 1 Watt Average

• 2 Watts PEP• Fully encapsulated

The Minns Baluns VDC Series are designed for precision measurement purposes where 50/600 ohm transformation is required with low VSWR and high balance ratio.

All the measuring transformers are fully encapsulated within a cast aluminium case to provide a high stability product capable of withstanding the most severe environment.

A series of very broad band hybrid transformers for signal splitting, combining or for laboratory measurements where high isolation is required. Other connectors available on request.

All specifications under matched load conditions. PCB mounted units are also available upon request

MHFH2 - RX - A MHFH2 - RX - B

Frequency 50 kHz - 50 MHz 10 kHz - 32 MHz

Power 2 x 2 Watts 2 x 2 Watts

Isolation >35 dB >35 dB

Insertion Loss < 0.5dB < 0.5dB

VSWR 30 dB

Insertion Loss < 0.5dB < 0.5dB

VSWR


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Impedance: 50 ohms

Input Power: 6 x 50 Watts

Output Power: 50 Watts

Insertion loss:

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Impedance: 50 ohms

Input Power: 2 x 1 kW average (2kW peak)

Output Power: 2kW average (4kW peak)

Insertion loss:


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The HFH4-1 is a 4 x 1 kW broad band hybrid designed to combine four unequal frequencies within the range of 2 - 40 MHz.

The unit is built to full military standards and suitable for frequency hopping and similar systems. It is emphasised that the HFH4-1 is not capable of combining co-phased transmitters and a 6 dB splitting loss is applicable to each signal path.

• ‘N’ connectors only available• Load port must be terminated in 500 Watt 50 ohm

unbalanced loads• Units available for outdoor unprotected operation


Impedance: 50 ohms

Input Power: 4 x 1 kW average

Balancing Loads: 6 x 500 Watt 50 ohms

Splitter Loss: 6 dB

Phase: 0º +/ - " 5º

Insertion loss: 0.5 dB (matched loads)

VSWR: 30 dB (matched loads)

Cooling: Solid encapsulation natural convection

Temperature: -40°C to +55°

The HFH2-10 series of broad band hybrids enable two co-phased 10 kW transmitters to be combined into a single 20 kW output. These units are particularly useful in low power HF broadcast systems where uninterrupted service is required when failure in one transmitter occurs.

Due to the excellent isolation characteristic of the HFH2-10, combination of two unequal frequencies for common antenna working is possible if the 3 dB power loss can be tolerated


Impedance: 50 ohms

Power: 2 input channels each 10 kW average (40kW peak) 20 kW average output for co-phased inputs

Pressure Relief Valve: Set to 0.5 - 1 PSI

Insertion loss:

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Resistive Load

Technical Specs.

Frequency: 1.5 - 32 MHz

Input Impedance: 50 ohms

Power: 10kW average continuous, 20kW peak

VSWR:


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Multicouplers

Transmitter multicouplers utilising low loss filter networks enable multiple transmitters to work into a common antenna. Computer aided design techniques provide optimum performance from conventional LC circuits which allows transmitters to work at close separations of 40%, 20% or optionally 15%.

System losses are low, typically less that 0.3dB and rejection of the adjacent transmitter above 30dB. The HFM2-1 series are suitable for 19” rack mounting and do not require additional forced air cooling.

Models can be supplied with various notch widths and we will be pleased to advise on the most economical solution to your problems.

Technical Specs.Frequency: 0.1 - 32MHz

Impedance: 50 ohmsVSWR:

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Multicouplers

Transmitter multicouplers utilising low loss filter networks enable multiple transmitters to work into a common antenna. Computer aided design techniques provide optimum performance from conventional LC circuits which allows transmitters to work at close separations of 40%, 20% or optionally 15%.

System losses are low, typically less than 0.3 dB and rejection of the adjacent transmitter above 30 dB. The HFHM2-5 series are suitable for 19” rack mounting and do not require additional forced air cooling.

Models can be supplied with various notch widths and we will be pleased to advise on the most economical solution to your problems.




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Multicouplers

Transmitter multicouplers utilising low loss filter networks enable

multiple transmitters to work into a common antenna. Computer aided

design techniques provide optimum performance from passive LC circuits which allows transmitters to work

at close separations of 40%, 20% or optionally 15%.

System losses are low, typically less than 0.3dB and rejection of the adjacent transmitter greater than 30 dB.



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Directional Couplers


HFC1-30 = 1kW HF Directional Coupler

The HFC1-30 is a wide band directional coupler for the HF band.

The coupler uses ferrite transformer techniques resulting in an extremely small compact device for permanent installation or for field measurement purposes.

Output samples of forward and reverse power flow are provided. Being effectively a “dual” coupler the reverse signal is largely independent of the load on the forward port (and vice versa). Built in load resistors dissipate any unterminated coupled power.

N.B. at 1kW the forward output signal is 1 Watt.

*The coupler is effective over a very much wider frequency range with a small degradation in performance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired.

Technical Specs.Frequency: 2 - 50MHz. full specification

The coupler is effective over a very much wider frequency range with a small degradation in performance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired

Max. VSWR: 2.5 : 1Insertion Loss: < 0.1 dBReturn Loss (matched load) > 26.5 dBCoupling Ratio: -30 dB +/- 0.5 dBConnectors: Main line 'N' female. Coupled line 'BNC'

femaleForward/Reverse discrimination:

> 30 dB



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N.B. at 10kW the forward output signal is 25W.

*The coupler is effective over a very much wider frequency range with a small degradation in performance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired.

Technical Specs.Frequency: 2 - 32MHz. full specification

The coupler is effective over a very much wider frequency range with a small degradation in perfor-mance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired

Power Rating: 10 kW continuous and peakMax. VSWR: 2.5 : 1Insertion Loss: < 0.1 dBReturn Loss (matched load) > 26.5 dBCoupling Ratio: -26 dB +/- 0.5 dBConnectors: Main line – 7/8″ or 1 5/8″. Coupled line -‘N’ femaleForward/Reverse discrimination: > 30 dB




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N.B. at 30kW the forward output signal is 75W.

*The coupler is effective over a very much wider frequency range with a small degradation in performance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired

Technical Specs.

Frequency: 2 - 32MHz. full specificationThe coupler is effective over a very much wider frequency range with a small degradation in performance. Calibration charts can be supplied for those out of band frequencies, where for example, measurement of harmonics is desired

Power Rating: 30 kW continuous and peak

Max. VSWR: 2.5 : 1

Insertion Loss: < 0.1 dB

Return Loss (matched load) > 26.5 dB

Coupling Ratio: -26 dB +/- 0.5 dB

Connectors: Main line - 1 5/8". Coupled line -'N' female

Forward/Reverse discrimination: > 30 dB





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www.ctsminns.co.ukDiplexer

The diplexer is a passive, 3-port network which splits RF signals between separate inputs of a broadband antenna.

Technical Specs.Input Power: 1.5 kW average (4 kW peak)

Input Frequency: 1.6 - 30 MHzOutput 1: 1.6 - 9 MHzOutput 2: 9 - 30 MHzRoll Off: Output 1: at 10MHz - 9 dBOutput 2: at 8 MHz - 9 dBInsertion Loss:

Diplexer

HFC30-26 = 30kW HF Directional

Coupler


HFM2-1 - 2 x 1 kW HF Transmitter Multicouplers RL 100-5 - 50 Ohm

10kW Resistive Load

HFH6-50/B - Broad Band VHF Hybrid Combiner



HF4 Series 400 Watt HF Wide Band Antenna Matching Transformer


HF Antenna Matching Transformers

CTS Gallery

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Antenna Matching TransformersMeasuring TransformerHybrid Splitters/CombindersResistive LoadMulticouplersDirectional CouplersDiplexer

Antenna Matching Transformers - ctsminns · The HF50 is a unit of the highest quality and...

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