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
É proposto um transdutor com um passo largo de um guia de onda pós-parede até uma largura de guia de onda oca, que é tolerante ao deslocamento da abertura. Os modos na largura de passo de cerca de 1.50 comprimentos de onda são estáveis para o deslocamento de abertura e os campos não são tão perturbados enquanto na estrutura escalonada convencional com largura de passo de cerca de 1.00 comprimento de onda, o modo evanescente superior de TE30 é excessivamente realçado pelo deslocamento da abertura. A operação do transdutor com passo mais largo é robusta para os erros de fabricação na banda de ondas milimétricas. Sugere-se também que o TE anti-simétrico20 O modo que é excitado apenas pelo deslocamento diferente de zero ou pelo desalinhamento da abertura existe em ambas as estruturas e não pode ser o fator dominante para a melhoria. Os transdutores são projetados e fabricados em 61.25 GHz utilizando substrato de PTFE com fibra de vidro de εr=2.17. A largura de banda para reflexão inferior a -15 dB permanece quase inalterada (6.30-6.60 GHz) para o deslocamento de -0.2 mm a 0.2 mm, enquanto é degradada na estrutura escalonada convencional, de 7.65 GHz sem deslocamento para 3.30-5.70 GHz para a mesma faixa do deslocamento.
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JungAun LEE, Jiro HIROKAWA, Makoto ANDO, "Step Width Tolerable for Offset of the Aperture in a Millimeter-Wave Transducer between Post-Wall and Hollow Standard Waveguides" in IEICE TRANSACTIONS on Electronics,
vol. E91-C, no. 12, pp. 1910-1916, December 2008, doi: 10.1093/ietele/e91-c.12.1910.
Abstract: A transducer with a wide step from a post-wall waveguide to a hollow waveguide width is proposed which is tolerant against the aperture offset. The modes in the step width of about 1.50 wavelengths are stable for the aperture offset and the fields are not so perturbed while in the conventional stepped structure with step width of about 1.00 wavelength, the higher evanescent mode of TE30 is excessively enhanced by the aperture offset. The operation of the transducer with the wider step is robust for the fabrication errors in the millimeter wave band. It is also suggested that the anti-symmetrical TE20 mode which is excited only by non-zero offset or the misalignment of the aperture exists in both structures and can not be the dominant factor for the improvement. The transducers are designed and fabricated at 61.25 GHz using PTFE substrate with glass fiber of εr=2.17. The bandwidth for the reflection lower than -15 dB is almost unchanged (6.30-6.60 GHz) for the offset from -0.2 mm to 0.2 mm, while it is degraded in the conventional stepped structure, from 7.65 GHz for no offset to 3.30-5.70 GHz for the same range of the offset.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e91-c.12.1910/_p
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@ARTICLE{e91-c_12_1910,
author={JungAun LEE, Jiro HIROKAWA, Makoto ANDO, },
journal={IEICE TRANSACTIONS on Electronics},
title={Step Width Tolerable for Offset of the Aperture in a Millimeter-Wave Transducer between Post-Wall and Hollow Standard Waveguides},
year={2008},
volume={E91-C},
number={12},
pages={1910-1916},
abstract={A transducer with a wide step from a post-wall waveguide to a hollow waveguide width is proposed which is tolerant against the aperture offset. The modes in the step width of about 1.50 wavelengths are stable for the aperture offset and the fields are not so perturbed while in the conventional stepped structure with step width of about 1.00 wavelength, the higher evanescent mode of TE30 is excessively enhanced by the aperture offset. The operation of the transducer with the wider step is robust for the fabrication errors in the millimeter wave band. It is also suggested that the anti-symmetrical TE20 mode which is excited only by non-zero offset or the misalignment of the aperture exists in both structures and can not be the dominant factor for the improvement. The transducers are designed and fabricated at 61.25 GHz using PTFE substrate with glass fiber of εr=2.17. The bandwidth for the reflection lower than -15 dB is almost unchanged (6.30-6.60 GHz) for the offset from -0.2 mm to 0.2 mm, while it is degraded in the conventional stepped structure, from 7.65 GHz for no offset to 3.30-5.70 GHz for the same range of the offset.},
keywords={},
doi={10.1093/ietele/e91-c.12.1910},
ISSN={1745-1353},
month={December},}
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TY - JOUR
TI - Step Width Tolerable for Offset of the Aperture in a Millimeter-Wave Transducer between Post-Wall and Hollow Standard Waveguides
T2 - IEICE TRANSACTIONS on Electronics
SP - 1910
EP - 1916
AU - JungAun LEE
AU - Jiro HIROKAWA
AU - Makoto ANDO
PY - 2008
DO - 10.1093/ietele/e91-c.12.1910
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E91-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2008
AB - A transducer with a wide step from a post-wall waveguide to a hollow waveguide width is proposed which is tolerant against the aperture offset. The modes in the step width of about 1.50 wavelengths are stable for the aperture offset and the fields are not so perturbed while in the conventional stepped structure with step width of about 1.00 wavelength, the higher evanescent mode of TE30 is excessively enhanced by the aperture offset. The operation of the transducer with the wider step is robust for the fabrication errors in the millimeter wave band. It is also suggested that the anti-symmetrical TE20 mode which is excited only by non-zero offset or the misalignment of the aperture exists in both structures and can not be the dominant factor for the improvement. The transducers are designed and fabricated at 61.25 GHz using PTFE substrate with glass fiber of εr=2.17. The bandwidth for the reflection lower than -15 dB is almost unchanged (6.30-6.60 GHz) for the offset from -0.2 mm to 0.2 mm, while it is degraded in the conventional stepped structure, from 7.65 GHz for no offset to 3.30-5.70 GHz for the same range of the offset.
ER -