Dual‐Loop Antennas With a Branched Feed‐Line for Broadband Circular Polarisation

Using the method of moments, we first analyse reference and present dual‐loop antennas with a perturbation segment and branched feedline, respectively. The loop elements of each antenna are gradually rotated for an increased 3 dB axial ratio bandwidth. Analysis reveals that as the loop rotation angl...

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Vydáno v:Electronics letters Ročník 61; číslo 1
Hlavní autoři: Hirose, Kazuhide, Mita, Shintaro, Urushibata, Yuya, Nakano, Hisamatsu
Médium: Journal Article
Jazyk:angličtina
Vydáno: 01.01.2025
ISSN:0013-5194, 1350-911X
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Abstract Using the method of moments, we first analyse reference and present dual‐loop antennas with a perturbation segment and branched feedline, respectively. The loop elements of each antenna are gradually rotated for an increased 3 dB axial ratio bandwidth. Analysis reveals that as the loop rotation angle increases, the bandwidths of the reference and present antennas reach 20% and 43%, respectively, twice and three times as broad as those of the corresponding antennas without the rotation. Next, we modify the present antenna using a sequential rotation technique and discuss the radiation characteristics. The simulated results are verified with experimental ones.
AbstractList Using the method of moments, we first analyse reference and present dual‐loop antennas with a perturbation segment and branched feedline, respectively. The loop elements of each antenna are gradually rotated for an increased 3 dB axial ratio bandwidth. Analysis reveals that as the loop rotation angle increases, the bandwidths of the reference and present antennas reach 20% and 43%, respectively, twice and three times as broad as those of the corresponding antennas without the rotation. Next, we modify the present antenna using a sequential rotation technique and discuss the radiation characteristics. The simulated results are verified with experimental ones.
Author Urushibata, Yuya
Mita, Shintaro
Hirose, Kazuhide
Nakano, Hisamatsu
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Cites_doi 10.1109/TAP.2005.861512
10.1109/TAP.2004.823876
10.1049/ell2.12446
10.3390/electronics13193896
10.1109/LAWP.2022.3165972
10.1109/LAWP.2021.3104350
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References Harrington R. F. (e_1_2_9_7_1) 1968
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