Reduced Cross-Polarization and Backside Radiations for Rectangular Microstrip Antennas Using Defected Ground Structure Combined With Decoupling Structure
IEEE Antennas and Wireless Propagation Letters(2023)
摘要
For cross-polarization (XP) reduction of microstrip antenna, it is proposed to use asymmetric defected ground structure (DGS) under the patch, which perturbs the TM
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mode. Unlike conventional DGS, the proposed DGS reduces the XP without increasing the back radiation. A method of higher order modes and surrounding electric fields is used to explain the DGS. The feasibility and superiority of the proposed scheme are further verified by constructing H-plane linear 4-element arrays. The XP reduction and decoupling are achieved simultaneously, as supported by simulation and measurement.
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关键词
Antenna arrays,backside radiation,cross-polarization,decoupling,defected ground structure (DGS),microstrip antenna
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