Design of Broadband Miniaturized Microstrip Array Antenna with Circular Polarization for Use in Anti-GPS Systems
Subject Areas : Antenna Design and Application
Morteza Mohammadi Shirkolaei
1
,
Mehdi Aslinezhad
2
1 - Department of Electrical Engineering, Shahid Sattari University of Aeronautical Engineering
2 - Department of Electrical Engineering, Shahid Sattari University of Aeronautical Engineering
Keywords: Microstrip antenna, Circular polarization, Wide band, GPS,
Abstract :
In this paper, a broadband miniaturized microstrip array antenna with circular polarization is proposed and designed for use in anti-GPS systems that have a single port. The working process is that first, a broadband antenna is designed to increase the bandwidth and the appropriate gain with circular polarization. Then, by designing a one-to-four divider whose output has a 90-degree phase difference and connecting it to four antennas that rotate 90 degrees to each other, a 2*2 array antenna is obtained. The distance of these antennas is designed so that the zero pattern is located at +90° and -90° angles to be resistant to GPS jammers. The results of the designed full-wave antenna are discussed and evaluated in this article. One of the uses of this antenna is to use it on drones that find their position through GPS.
Miniaturized microstrip array antenna.
Circularly polarized microstrip array antenna.
The designed antenna is used in anti-GPS systems and has a single port.
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