Presentation 2019-11-20
Analysis for Gap Waveguide Considering Structural Periodicity and Design of Mode Converter
Keisuke Ejiri, Takashi Tomura, Jiro Hirokawa,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Gap waveguide consists of parallel metal plates and waffle iron structure, which has electromagnetic bandgap. The waffle iron structure has structural periodicity in the propagation direction. Therefore, the cross-sectional eigenmodes have different properties against Floquet modes considered the structural periodicity. The cross-sectional modes also have N+1 propagation modes where N is equal to the number of metal pins including in the cross section. Electrical power is divided into the propagation modes. Consequently, modal analysis based on the cross-sectional modes is not suitable for the gap waveguide. In this paper, we apply Floquet modal analysis for an accurate analysis of the gap waveguide. The analysis is applided to mode converter.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) gap waveguide / cross-sectional mode / Floquet mode / periodic structure / waffle iron structure / modal expansion
Paper # AP2019-112
Date of Issue 2019-11-13 (AP)

Conference Information
Committee AP / RCS
Conference Date 2019/11/20(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Saga Univ.
Topics (in Japanese) (See Japanese page)
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc.
Chair Qiang Chen(Tohoku Univ.) / Tomoaki Otsuki(Keio Univ.)
Vice Chair Satoru Kurokawa(AIST) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.)
Secretary Satoru Kurokawa(Mitsubishi Electric) / Satoshi Suyama(Tokyo Univ. of Agric. & Tech.) / Fumiaki Maehara(NTT) / Toshihiko Nishimura(Kyushu Univ.)
Assistant Michitaka Ameya(AIST) / Kazushi Muraoka(NEC) / Shinsuke Ibi(Doshisha Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric)

Paper Information
Registration To Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Analysis for Gap Waveguide Considering Structural Periodicity and Design of Mode Converter
Sub Title (in English)
Keyword(1) gap waveguide
Keyword(2) cross-sectional mode
Keyword(3) Floquet mode
Keyword(4) periodic structure
Keyword(5) waffle iron structure
Keyword(6) modal expansion
1st Author's Name Keisuke Ejiri
1st Author's Affiliation Tokyo Institute of Technology(Tokyo Tech)
2nd Author's Name Takashi Tomura
2nd Author's Affiliation Tokyo Institute of Technology(Tokyo Tech)
3rd Author's Name Jiro Hirokawa
3rd Author's Affiliation Tokyo Institute of Technology(Tokyo Tech)
Date 2019-11-20
Paper # AP2019-112
Volume (vol) vol.119
Number (no) AP-295
Page pp.pp.35-40(AP),
#Pages 6
Date of Issue 2019-11-13 (AP)