A Loop Antenna Array with Enlarged Axial-Ratio Bandwidth and Reduced Cross-Polarized Radiation

K Hirose,H Nakano,K Fukuda

doi:10.1109/ap-s/usnc-ursi47032.2022.9886457

A Loop Antenna Array with Enlarged Axial-Ratio Bandwidth and Reduced Cross-Polarized Radiation

K Hirose, H Nakano + Show 1 more

https://doi.org/10.1109/ap-s/usnc-ursi47032.2022.9886457

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Publication Date: Jul 10, 2022

Affiliation: Hosei University, Shibaura Institute of Technology

#Axial Ratio Bandwidth #Sequential Rotation + Show 8 more

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Abstract

We analyze a novel dual-loop antenna with parallel wires using the moment method. The antenna is modified with a sequential rotation (SR), and a 3 dB axial-ratio bandwidth is evaluated versus loop height above the ground plane. It is found that the bandwidth with SR reaches 22%, which is 3.5 times as wide as that without SR. Subsequently, we design a decoupling array of two modified antennas to reduce the cross-polarized radiation. It is revealed that the maximum cross-polarization level in the radiation pattern is reduced to −15 dB without deterioration in the axial ratio bandwidth.

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