RECONFIGURABLE DUAL CIRCULARLY POLARIZED MICROSTRIP ANTENNA WITHOUT ORTHOGONAL FEEDING NETWORK

L. Sun National Key Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an, Shaanxi 710071, China; lsun@mail. xidian.edu.cn

B.-H. Sun National Key Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an, Shaanxi 710071, China

J.-Y. Li Northwestern Polytechnical University, Xi'an, Shaanxi, China

Y.-H. Huang National Key Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an, Shaanxi 710071, China

Q.-Z. Liu National Key Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an, Shaanxi 710071, China

Abstract

A polarization reconfigurable microstrip antenna is proposed without orthogonal feeding network. The antenna is composed of a suspended patch, two printed probes and a simple switch circuit. Reconfigurable circularly polarization, i.e., right-hand circular polarization (RHCP) or left-hand circular polarization (LHCP), is produced by controlling the states of the switch circuit. A prototype is designed and tested. The simulation and measurement results show that the proposed antenna demonstrates wide impedance bandwidth and a good axial ratio in the circularly polarized states.

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RECONFIGURABLE DUAL CIRCULARLY POLARIZED MICROSTRIP ANTENNA WITHOUT ORTHOGONAL FEEDING NETWORK

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RECONFIGURABLE DUAL CIRCULARLY POLARIZED MICROSTRIP ANTENNA WITHOUT ORTHOGONAL FEEDING NETWORK

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