AbstractThe “Age of Communications” requires technology to be developed up to the extent

where mobile communication offers more than one service or capability, such as

Internet access and Global Positioning System (GPS) all integrated in a single

lightweight portable device.

To comply with the requirements of portable multiple communication protocol enabled

hand-held devices, a multiband antenna solution is highly desired.

Multiband Antennas allow manufacturers to shrink the size, reduce weight, and lower

cost of wireless devices as well as offering higher flexibility toward more aesthetic

designs. But most important, they represent one step more in the miniaturization race,

which benefits the manufacturer, services provider and finally, the most important the

consumer.

The focus of the proposed project is to investigate the possibility to integrate three

different wireless applications such as GSM, Wi-Fi, and GPS in portable devices. The

aim of the project is to design a microstrip antenna (MSA) that will allow for multi-

band operations. MSAs that operate in multiple frequency bands are required in many

wireless communication devices. In this project, we will explore the possibility of

employing different geometry solutions to achieve multiband MSAs. Several numerical

simulations using HFSS™ will be performed; if funds will be available, the ones that

are more amenable to fabrication will be manufactured and tested in the Applied

Microwave & Electromagnetic Laboratory.

Microstrip Antennas

Microstrip Antennas consist mainly in a

metallic patch which radiates and receives

the signal. This patch is etched on a side of

a Printed Circuit Board (PCB) along with an

impedance matching circuit and a port. At

the opposite side of the PCB a metallic layer

is left over as a requirement of the antenna

to have a ground plane.

1.52mm

Conclusions

A Multiband Microstrip Antenna was

designed,manufactured, and tested. The

results resembled those obtained from the

numerical simulation as far as the

resonances.

Acknowledgments

This research was made possible by:

Dr. Fabio Urbani

UTB AMEL (Applied Microwave and Electromagnetic

Laboratory)

NSF-Major Research Instrumentation (MRI)

Cesar R. Garcia

Rene Rodriguez

Future ResearchThe patch geometry, responsible for the

resonances of the antenna, is not limited to

the slotted square shape employed for this

project. Therefore, some other geometries

may be explored in order to achieve better

antenna gains.

Along with the patch geometry, some other

feed methods may be used in search for

gain enhancement, instead of the Microstrip

Line Network utilized in this project .

Design of Microstrip Antennas for GSM, Wi-Fi, and GPS Integration

Eduardo Alberto Vargas Artiles, artiles89@gmail.com Advisor: Dr. Fabio Urbani

Design and numerical simulation

Numerical Simulation Results (Expected Resonances)

Experimental Results (Real Resonances)

Manufactured Prototype