2.3 GHz antenna with both LHCP and LP for SDARS

Antennas with capabilities of linear and circular polarization for SDARS (satellite digital audio radio service) are developed. The measured results of these antennas have a wide angular 3 dB beamwidth coverage; 170 degrees for LHCP (left hand circular polarization) and a 3 dB beamwidth coverage from horizontal up to 60 degrees, for the vertical LP (linear polarization) antenna. Test results agree with those of simulation.