| Presentation | 2024-01-26 Design of Novel Box-type Coupling Microstrip Diplexer with Transmission Zeros Yudai Nishiyama, Masataka Ohira, Zhewang Ma, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new box-type coupling microstrip diplexer that can place transmission zeros at arbitrary frequencies. In conventional microstrip diplexers, transmission zeros (TZs) are generated by direct source/load coupling and/or a negative coupling, but it is difficult to place transmission zeros at arbitrary frequencies owing to a complicated circuit configuration. To solve this problem, we propose a new structure of microstrip diplexer using box-type coupling with even- and odd-mode stepped impedance resonators, which has been proposed by the authors for filter design. As an example, a microstrip diplexer is designed under the design specifications with center frequency of 2.0 GHz, bandwidth of 100 MHz, and 1.85-GHz and 2.15-GHz TZ frequencies for lower passband, and center frequency of 2.2 GHz, bandwidth of 100 MHz, 2.05-GHz and 2.35-GHz TZ frequencies for upper passband. A coupling-matrix based circuit synthesis method and a coupling matrix extraction method for diplexers enable us to design the structural parameters efficiently. The effectiveness of the proposed diplexer is verified by good agreement between EM-simulated frequency responses, theoretical characteristics, and experimental results. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Diplexer / microstrip / transmission zeros / coupling matrix |
| Paper # | ED2023-72,MW2023-164 |
| Date of Issue | 2024-01-18 (ED, MW) |
| Conference Information | |
| Committee | ED / MW |
|---|---|
| Conference Date | 2024/1/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Seiya Sakai(Hokkaido Univ.) / Kensuke Okubo(Okayama Prefectural Univ.) |
| Vice Chair | Manabu Arai(Nagoya Univ.) / Atsushi Sanada(Osaka Univ.) / Akihito Hirai(Mitsubishi Electric) |
| Secretary | Manabu Arai(Saga Univ.) / Atsushi Sanada(Mitsubishi Electric) / Akihito Hirai(Univ. of Electro-Comm) |
| Assistant | Masatoshi Koyama(Osaka Inst. of Tech.) / Tomohiro Yoshida(SUMITOMO ELECTRIC DEVICE INNOVATIONS) / Tomoyuki Furuichi(Tohoku Univ.) / Kosuke Katayama(NIT Tokuyama College) |
| Paper Information | |
| Registration To | Technical Committee on Electron Devices / Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of Novel Box-type Coupling Microstrip Diplexer with Transmission Zeros |
| Sub Title (in English) | |
| Keyword(1) | Diplexer |
| Keyword(2) | microstrip |
| Keyword(3) | transmission zeros |
| Keyword(4) | coupling matrix |
| 1st Author's Name | Yudai Nishiyama |
| 1st Author's Affiliation | Saitama University(Saitama Univ.) |
| 2nd Author's Name | Masataka Ohira |
| 2nd Author's Affiliation | Saitama University(Saitama Univ.) |
| 3rd Author's Name | Zhewang Ma |
| 3rd Author's Affiliation | Saitama University(Saitama Univ.) |
| Date | 2024-01-26 |
| Paper # | ED2023-72,MW2023-164 |
| Volume (vol) | vol.123 |
| Number (no) | ED-365,MW-366 |
| Page | pp.pp.29-34(ED), pp.29-34(MW), |
| #Pages | 6 |
| Date of Issue | 2024-01-18 (ED, MW) |