Design of multi-frequency band Circularly Polarized Stacked Microstrip patch Antenna

New multilayer configurations for dual and triple-band circularly polarized stacked microstrip antennas (CPSMA) are proposed. More than 7 dB simulated gain for both LHCP frequencies of satellite communication are obtained for the dual-band design and more than 5 dB for both LHCP and GPS RHCP for the triple-band design.