| Presentation | 2016-12-16 Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines Ryo Tomita, Masataka Ohira, Zhewang Ma, Xiaolong Wang, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A coupling matrix extraction technique is very useful for designs and tunings of microwave bandpass filters. In recent years, a coupling matrix extraction method using a vector fitting approach has been proposed. However, it has difficulties that unloaded Q factors of resonators cannot be accurately extracted from planer filters with lossy feeding lines, and also that a frequency-dependent direct source/load coupling cannot be extracted with conventional fitting approach. To solve these problems, this paper proposes a de-embedding method for lossy feeding lines and an improved vector fitting technique so that frequency-dependent direct source/load coupling can be evaluated. As an example, we extract coupling matrices from measurement and EM simulation results of microstrip bandpass filters, which validates the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bandpass filters / coupling matrix / vector fitting / unloaded Q factors / de-embedding |
| Paper # | MW2016-157 |
| Date of Issue | 2016-12-08 (MW) |
| Conference Information | |
| Committee | MW |
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| Conference Date | 2016/12/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | National Defense Academy |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Students Session / Microwave Technologies |
| Chair | Yohei Ishikawa(Kyoto Univ.) |
| Vice Chair | Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) / Kenichi Tajima(Mitsubishi Electric) |
| Secretary | Takao Kuki(Panasonic) / Kenjiro Nishikawa(Tokyo Inst. of Tech.) / Kenichi Tajima |
| Assistant | Naoto Sekiya(Univ. of Yamanashi) / Satoshi Ono(Univ. of Electro-Comm.) |
| 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) | Improved Extraction Method for Coupling-Matrix of Microstrip Bandpass Filters with Lossy Input/Output Lines |
| Sub Title (in English) | |
| Keyword(1) | Bandpass filters |
| Keyword(2) | coupling matrix |
| Keyword(3) | vector fitting |
| Keyword(4) | unloaded Q factors |
| Keyword(5) | de-embedding |
| 1st Author's Name | Ryo Tomita |
| 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.) |
| 4th Author's Name | Xiaolong Wang |
| 4th Author's Affiliation | Saitama University(Saitama Univ.) |
| Date | 2016-12-16 |
| Paper # | MW2016-157 |
| Volume (vol) | vol.116 |
| Number (no) | MW-363 |
| Page | pp.pp.141-146(MW), |
| #Pages | 6 |
| Date of Issue | 2016-12-08 (MW) |