The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
T-접합 직교 모드 변환기(OMT)는 동일한 주파수 대역에서 두 개의 직교 선형 편파를 분리하는 도파관 구성 요소입니다. 한쪽 끝이 단락된 공통 원형 도파관과 단락 근처에서 반대 방향으로 배열된 두 개의 가지 직사각형 도파관을 가지고 있습니다. T-접합 OMT의 장점 중 하나는 축 길이가 짧다는 것입니다. 그러나 직교해야 하는 두 개의 직사각형 포트는 비대칭성으로 인해 성능 수준이 다릅니다. 따라서 우리는 두 개의 분기 도파관이 단락 회로에 대해 45° 기울어지도록 구성된 단축 대칭 T-접합 OMT를 제안합니다. 단축 대칭 구성은 두 포트에 대해 동일한 수준의 성능을 가능하게 하며, 기존 구성에 비해 임피던스 매칭이 더 쉽습니다. 편광 분리 원리는 OMJ(Orthomode Junction)와 Turnstile OMT의 원리를 사용하여 설명할 수 있습니다. 계산에 따르면, 제안된 구성은 K 대역에서 25% 대역폭으로 반사 손실 30dB, XPD 21dB, 두 분기 포트 간 격리 0.25dB, 손실 15dB를 나타냈습니다. 그런 다음 OMT를 3D 프린팅을 통해 단일 조각으로 제작하고 계산된 성능 지수와 비교하여 평가했습니다.
Hidenori YUKAWA
Mitsubishi Electric Corp.
Yu USHIJIMA
Mitsubishi Electric Corp.
Toru TAKAHASHI
Mitsubishi Electric Corp.
Toru FUKASAWA
Mitsubishi Electric Corp.
Yoshio INASAWA
Mitsubishi Electric Corp.
Naofumi YONEDA
Mitsubishi Electric Corp.
Moriyasu MIYAZAKI
Mitsubishi Electric Corp.
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Hidenori YUKAWA, Yu USHIJIMA, Toru TAKAHASHI, Toru FUKASAWA, Yoshio INASAWA, Naofumi YONEDA, Moriyasu MIYAZAKI, "Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports" in IEICE TRANSACTIONS on Electronics,
vol. E107-C, no. 3, pp. 57-65, March 2024, doi: 10.1587/transele.2023ECP5013.
Abstract: A T-junction orthomode transducer (OMT) is a waveguide component that separates two orthogonal linear polarizations in the same frequency band. It has a common circular waveguide short-circuited at one end and two branch rectangular waveguides arranged in opposite directions near the short circuit. One of the advantages of a T-junction OMT is its short axial length. However, the two rectangular ports, which need to be orthogonal, have different levels of performance because of asymmetry. We therefore propose a uniaxially symmetrical T-junction OMT, which is configured such that the two branch waveguides are tilted 45° to the short circuit. The uniaxially symmetrical configuration enables same levels of performance for the two ports, and its impedance matching is easier compared to that for the conventional configuration. The polarization separation principle can be explained using the principles of orthomode junction (OMJ) and turnstile OMT. Based on calculations, the proposed configuration demonstrated a return loss of 25dB, XPD of 30dB, isolation of 21dB between the two branch ports, and loss of 0.25dB, with a bandwidth of 15% in the K band. The OMT was then fabricated as a single piece via 3D printing and evaluated against the calculated performance indices.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.2023ECP5013/_p
부
@ARTICLE{e107-c_3_57,
author={Hidenori YUKAWA, Yu USHIJIMA, Toru TAKAHASHI, Toru FUKASAWA, Yoshio INASAWA, Naofumi YONEDA, Moriyasu MIYAZAKI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports},
year={2024},
volume={E107-C},
number={3},
pages={57-65},
abstract={A T-junction orthomode transducer (OMT) is a waveguide component that separates two orthogonal linear polarizations in the same frequency band. It has a common circular waveguide short-circuited at one end and two branch rectangular waveguides arranged in opposite directions near the short circuit. One of the advantages of a T-junction OMT is its short axial length. However, the two rectangular ports, which need to be orthogonal, have different levels of performance because of asymmetry. We therefore propose a uniaxially symmetrical T-junction OMT, which is configured such that the two branch waveguides are tilted 45° to the short circuit. The uniaxially symmetrical configuration enables same levels of performance for the two ports, and its impedance matching is easier compared to that for the conventional configuration. The polarization separation principle can be explained using the principles of orthomode junction (OMJ) and turnstile OMT. Based on calculations, the proposed configuration demonstrated a return loss of 25dB, XPD of 30dB, isolation of 21dB between the two branch ports, and loss of 0.25dB, with a bandwidth of 15% in the K band. The OMT was then fabricated as a single piece via 3D printing and evaluated against the calculated performance indices.},
keywords={},
doi={10.1587/transele.2023ECP5013},
ISSN={1745-1353},
month={March},}
부
TY - JOUR
TI - Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports
T2 - IEICE TRANSACTIONS on Electronics
SP - 57
EP - 65
AU - Hidenori YUKAWA
AU - Yu USHIJIMA
AU - Toru TAKAHASHI
AU - Toru FUKASAWA
AU - Yoshio INASAWA
AU - Naofumi YONEDA
AU - Moriyasu MIYAZAKI
PY - 2024
DO - 10.1587/transele.2023ECP5013
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E107-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2024
AB - A T-junction orthomode transducer (OMT) is a waveguide component that separates two orthogonal linear polarizations in the same frequency band. It has a common circular waveguide short-circuited at one end and two branch rectangular waveguides arranged in opposite directions near the short circuit. One of the advantages of a T-junction OMT is its short axial length. However, the two rectangular ports, which need to be orthogonal, have different levels of performance because of asymmetry. We therefore propose a uniaxially symmetrical T-junction OMT, which is configured such that the two branch waveguides are tilted 45° to the short circuit. The uniaxially symmetrical configuration enables same levels of performance for the two ports, and its impedance matching is easier compared to that for the conventional configuration. The polarization separation principle can be explained using the principles of orthomode junction (OMJ) and turnstile OMT. Based on calculations, the proposed configuration demonstrated a return loss of 25dB, XPD of 30dB, isolation of 21dB between the two branch ports, and loss of 0.25dB, with a bandwidth of 15% in the K band. The OMT was then fabricated as a single piece via 3D printing and evaluated against the calculated performance indices.
ER -