A loop antenna with quasi-two sources for circular polarisation

Kazuhide Hirose; S. Tsubouchi; H. Nakano

doi:10.1049/ell2.12419

A loop antenna with quasi-two sources for circular polarisation

Kazuhide Hirose, S. Tsubouchi, H. Nakano

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial-ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones.

Original language	English
Pages (from-to)	222-224
Number of pages	3
Journal	Electronics Letters
Volume	58
Issue number	6
DOIs	https://doi.org/10.1049/ell2.12419
Publication status	Published - 2022 Mar

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/ell2.12419

Cite this

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title = "A loop antenna with quasi-two sources for circular polarisation",

abstract = "A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial-ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones.",

author = "Kazuhide Hirose and S. Tsubouchi and H. Nakano",

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AU - Hirose, Kazuhide

AU - Tsubouchi, S.

AU - Nakano, H.

N1 - Funding Information: The authors would like to thank Blair Thomson for his invaluable assistance in preparing this manuscript. Publisher Copyright: © 2022 The Authors. Electronics Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology

PY - 2022/3

Y1 - 2022/3

N2 - A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial-ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones.

AB - A novel method of exciting a circularly polarised (CP) loop antenna is proposed using the moment method. A horizontal square loop above the ground plane has two corners connected to a vertical, branched feedline with one source. First, the authors show the radiation characteristics of a reference antenna whose corners are excited with two sources having the same amplitudes and a phase difference of 90°. Next, we excite the loop corners with one source using the branched feedline. It is found that when the branch location along the feedline is selected, the antenna radiates a CP wave. The frequency responses of the antenna show that the 3 dB axial-ratio bandwidth is 12%, where the gain is more than 7.3 dBi. The simulated results are verified with experimental ones.

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A loop antenna with quasi-two sources for circular polarisation

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