| Presentation | 2011-10-21 Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros Takaaki MATSUMOTO, Masataka OHIRA, Zhewang MA, Hiroyuki DEGUCHI, Mikio TSUJI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new compact cutoff waveguide filter using planar resonators for both the generation of multiple transmission zeros and the filter miniaturization. In a conventional waveguide filter consisting of planar resonators called frequency selective surface (FSS), a quarter-wavelength rectangular waveguide is needed for inverter circuits between the resonators. In order to reduce the length of the inverter section, the proposed waveguide filter is constructed by arranging new planar resonators successively in the cutoff waveguide at appropriate intervals. The planar resonator has a resonance at a center frequency in passband and two antiresonances at lower and upper stopbands, thereby providing multiple transmission zeros. As a design example, three-stage bandpass filter is demonstrated at X band. As a result, the size of the designed filter is reduced to about 30% in volume, compared to the conventional FSS-loaded filters. In addition, the designed filter realizes high skirt selectivity due to the transmission zeros located near the passband. The effectiveness of the design results is validated by numerical calculations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cutoff waveguide / waveguide filter / planar resonator / transmission zeros |
| Paper # | MW2011-105 |
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| Committee | MW |
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| Conference Date | 2011/10/13(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Miniaturization of Cutoff Waveguide Filter Using Planar Resonators with Transmission Zeros |
| Sub Title (in English) | |
| Keyword(1) | Cutoff waveguide |
| Keyword(2) | waveguide filter |
| Keyword(3) | planar resonator |
| Keyword(4) | transmission zeros |
| 1st Author's Name | Takaaki MATSUMOTO |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Saitama University() |
| 2nd Author's Name | Masataka OHIRA |
| 2nd Author's Affiliation | Graduate School of Science and Engineering, Saitama University |
| 3rd Author's Name | Zhewang MA |
| 3rd Author's Affiliation | Graduate School of Science and Engineering, Saitama University |
| 4th Author's Name | Hiroyuki DEGUCHI |
| 4th Author's Affiliation | Faculty of Science and Engineering, Doshisha University |
| 5th Author's Name | Mikio TSUJI |
| 5th Author's Affiliation | Faculty of Science and Engineering, Doshisha University |
| Date | 2011-10-21 |
| Paper # | MW2011-105 |
| Volume (vol) | vol.111 |
| Number (no) | 250 |
| Page | pp.pp.- |
| #Pages | 6 |
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