Circularly Polarized Microstrip Antenna with Reconfigurable Capability Using Ground Slot Perturbations

초록

A novel square patch antenna with reconfigurable circular polarization (CP) is presented in this letter A circular slot with perturbation is placed beneath the patch The circular slot that has an inner perturbation yields right handed CP but with an outer perturbation slot yields left handed CP Experiments show an antenna gain of 2 8 dBic and a 3 dB axial ratio bandwidth of 30 MHz which well match the corresponding simulation results

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