| Presentation | 2019-11-15 On the Relationship between Direct Source/Load Coupling and Higher-order Resonances in Microwave Bandpass Filter Masataka Ohira, Ryo Mikase, Zhewang Ma, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is well known that a direct source/load coupling contributes to the generation of transmission zeros at stopbands in bandpass filters. The direct source/load coupling, as suggested by the name, represents the amount of coupling when the input port (line) and output port (line) are directly coupled, but we should note that it is not always the case. It is theoretically pointed out that higher-order resonances also contribute to the direct source/load coupling. However, such a physical mechanism has not been quantitatively evaluated yet. In this paper, it is clarified by quantitative evaluations with a coupling-matrix extraction technique that the direct source/load coupling and its sign are mainly determined by higher-order resonances of resonators in a microstrip bandpass filter, as an example. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | bandpass filter / direct source/load coupling / resonance / coupling matrix |
| Paper # | MW2019-113 |
| Date of Issue | 2019-11-07 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2019/11/14(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Minami Daido Villa. Tamokuteki Koryu Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Technologies |
| Chair | Yoshinori Kogami(Utsunomiya Univ.) |
| Vice Chair | Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Shintaro Shinjo(Mitsubishi Electric) |
| Secretary | Tadashi Kawai(Utsunomiya Univ.) / Kensuke Okubo(Fujitsu Labs.) / Shintaro Shinjo |
| Assistant | Satoshi Yoshida(Kagoshima Univ.) / Kyoya Takano(Tokyo Univ. of Science) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | On the Relationship between Direct Source/Load Coupling and Higher-order Resonances in Microwave Bandpass Filter |
| Sub Title (in English) | |
| Keyword(1) | bandpass filter |
| Keyword(2) | direct source/load coupling |
| Keyword(3) | resonance |
| Keyword(4) | coupling matrix |
| 1st Author's Name | Masataka Ohira |
| 1st Author's Affiliation | Saitama Univercity(Saitama Univ.) |
| 2nd Author's Name | Ryo Mikase |
| 2nd Author's Affiliation | Saitama Univercity(Saitama Univ.) |
| 3rd Author's Name | Zhewang Ma |
| 3rd Author's Affiliation | Saitama Univercity(Saitama Univ.) |
| Date | 2019-11-15 |
| Paper # | MW2019-113 |
| Volume (vol) | vol.119 |
| Number (no) | MW-292 |
| Page | pp.pp.77-80(MW), |
| #Pages | 4 |
| Date of Issue | 2019-11-07 (MW) |