Presentation | 2018-10-19 180-Degree Branch Line Coupler Composed of Two Types of Iris-Loaded Waveguides Hidenori Yukawa, Yu Ushijima, Toru Takahashi, Naofumi Yoneda, Moriyasu Miyazaki, |
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PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | We propose a 180-degree branch line coupler composed of two types of iris-loaded waveguides. The proposed coupler consists of two main transmission lines and branch lines with different electrical lengths. Optimal electrical lengths enable to achieve 180-degree output phase difference without additional phase shifters. The two main lines with different electrical lengths are realized by capacitive and inductive iris-loaded waveguides. We designed a proposed coupler in K-band. The size of the proposed coupler is almost same as the usual 90-degree branch line coupler. So the proposed coupler presents an advantage of compactness, in comparison with the conventional 180-degree coupler with additional phase shifters. The measurement results demonstrated a return loss of 20dB, an isolation of 20dB, a coupling response of -3.1dB+0.1/-0.1dB, phase differences of 0deg+0.1/-1.4deg and -180deg+0.5/-2.3deg with a bandwidth of 8% in the K-band. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | Antenna feed systems / Waveguide / Coupler / Satellite communication |
Paper # | EMCJ2018-48,MW2018-84,EST2018-70 |
Date of Issue | 2018-10-11 (EMCJ, MW, EST) |
Conference Information | |
Committee | EST / MW / EMCJ / IEE-EMC |
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Conference Date | 2018/10/18(2days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | Hachinohe Chamber of Commerce and Industry(Hachinohe city, Aomori) |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | Simulation techniques, EMC, Microwave, Electromagnetic field simulation, etc. |
Chair | Akimasa Hirata(Nagoya Inst. of Tech.) / Masahiro Muraguchi(TUS) / Osami Wada(Kyoto Univ.) / 山崎 健一(電中研) |
Vice Chair | Shinichiro Ohnuki(Nihon Univ.) / Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) / Yoshinori Kogami(Utsunomiya Univ.) / Hiroshi Okazaki(NTT DOCOMO) / Kenichi Tajima(Mitsubishi Electric) / Kensei Oh(Nagoya Inst. of Tech.) |
Secretary | Shinichiro Ohnuki(CIST) / Masayuki Kimishima(National Inst. of Tech.,Sendai College) / Jun Shibayama(HITACHI) / Yoshinori Kogami(Utsunomiya Univ.) / Hiroshi Okazaki(Tokyo Inst. of Tech.) / Kenichi Tajima(Mitsubishi Electric) / Kensei Oh(東北学院大) / (鉄道総研) |
Assistant | Takahiro Ito(Nagoya Inst. of Tech.) / Kazuhiro Fujita(Fujitsu) / Mizuki Motoyoshi(Tohoku Univ.) / Satoshi Yoshida(Kagoshima Univ.) / Shinobu Nagasawa(Mitsubishi Electric) / Shinichiro Yamamoto(Univ. of Hyogo) / Takanori Unou(Denso) / 井渕 貴章(阪大) |
Paper Information | |
Registration To | Technical Committee on Electronics Simulation Technology / Technical Committee on Microwaves / Technical Committee on Electromagnetic Compatibility / Technical Meeting on Electromagnetic Compatibility (IEE-EMC) |
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Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | 180-Degree Branch Line Coupler Composed of Two Types of Iris-Loaded Waveguides |
Sub Title (in English) | |
Keyword(1) | Antenna feed systems |
Keyword(2) | Waveguide |
Keyword(3) | Coupler |
Keyword(4) | Satellite communication |
1st Author's Name | Hidenori Yukawa |
1st Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
2nd Author's Name | Yu Ushijima |
2nd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
3rd Author's Name | Toru Takahashi |
3rd Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
4th Author's Name | Naofumi Yoneda |
4th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
5th Author's Name | Moriyasu Miyazaki |
5th Author's Affiliation | Mitsubishi Electric Corporation(Mitsubishi Ele. Corp.) |
Date | 2018-10-19 |
Paper # | EMCJ2018-48,MW2018-84,EST2018-70 |
Volume (vol) | vol.118 |
Number (no) | EMCJ-247,MW-248,EST-249 |
Page | pp.pp.89-94(EMCJ), pp.89-94(MW), pp.89-94(EST), |
#Pages | 6 |
Date of Issue | 2018-10-11 (EMCJ, MW, EST) |