IEEE Antennas and Wireless Propagation Letters · 2014 · 101 citations · 7 references
EngineeringElectrical EngineeringAntennasComputational GeometryMicrowave EngineeringAntenna ArraysAntenna DesignAntenna MeasurementBroadband AntennasMicrostrip AntennasPlanar AntennasAntenna Array DesignArray DesignAxial RatioBeamwidthCircularly Polarized AntennasCircularly Polarized Broadband AntennasDual-polarized AntennasPatch Antennas
A broadband dual circularly polarized patch antenna with wide beamwidth is presented. The patch is excited by four cross slots via a microstrip line with multiple matching segments underneath the ground plane. The four cross slots and the multiple matching segments are optimized simultaneously to obtain the best performance. Measurements show that the antenna has 10-dB return-loss bandwidth of 24%, 10-dB isolation bandwidth of 19%, 3-dB axial-ratio bandwidth of 16%, and beamwidth of 110 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">°</sup> . Moreover, the single feed makes it a good candidate for array design.
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