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Circularly Polarized Microstrip Antenna with Reconfigurable Capability Using Ground Slot Perturbations
Seongmin PYO Jae-Kwan LEE Min-Jae LEE Dae-Myoung IN Young-Sik KIM
IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Online ISSN: 1745-1345
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
microstrip antenna, reconfigurable polarization, circular polarization, ground slot perturbation,
Full Text: PDF(1MB)>>
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.