| Presentation | 2015-06-25 Design of Compact Ultra Wide-Band Bandpass Filters Using Short- Circuited Stubs with Improved Stopband Characteristics Ryuhi Hamano, Zhewang Ma, Masataka Ohira, Chun-Ping Chen, Tetsuo Anada, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, a microstrip ultra-wideband bandpass filter (UWB BPF) using short-circuited stubs is designed based on a theoretical transfer function and an optimal algorithm. Then the UWB BPF is folded to reduce its size and cascaded with a broadband band-stop filter (BSF) to suppress spurious resonances at high frequencies. The filter is fabricated and its measured frequency response agrees well with the design prediction, showing a midband frequency of 6.85GHz, a fractional bandwidth of about 93%, and insertion loss of 1.4dB at the center frequency. The maximum reflection loss is about 10dB and the variation of group delay is less than 0.5ns in the passband. The total structure of the filter is compact, and the FCC’s UWB spectral musk is satisfied well up over a wide frequency range up to 28GHz. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | UWB / bandpass filter / bandstop filter / microstrip line / short-circuited stubs |
| Paper # | MW2015-39 |
| Date of Issue | 2015-06-18 (MW) |
| Conference Information | |
| Committee | MW |
|---|---|
| Conference Date | 2015/6/25(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Institute of Industrial Promotion Kawasaki |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Microwave Signal Generation and Measurement / Microwave Technologies |
| Chair | Yohei Ishikawa(Kyoto Univ.) |
| Vice Chair | Masashi Nakatsugawa(NTT) / Takao Kuki(Kokushikan Univ.) / Kenjiro Nishikawa(Kagoshima Univ.) |
| Secretary | Masashi Nakatsugawa(NTT) / Takao Kuki(Panasonic) / Kenjiro Nishikawa |
| Assistant | Ryo Ishikawa(Univ. of Electro-Comm.) / Naoto Sekiya(Univ. of Yamanashi) |
| Paper Information | |
| Registration To | Technical Committee on Microwaves |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design of Compact Ultra Wide-Band Bandpass Filters Using Short- Circuited Stubs with Improved Stopband Characteristics |
| Sub Title (in English) | |
| Keyword(1) | UWB |
| Keyword(2) | bandpass filter |
| Keyword(3) | bandstop filter |
| Keyword(4) | microstrip line |
| Keyword(5) | short-circuited stubs |
| 1st Author's Name | Ryuhi Hamano |
| 1st Author's Affiliation | Saitama University(Saitama Univ.) |
| 2nd Author's Name | Zhewang Ma |
| 2nd Author's Affiliation | Saitama Universit(Saitama Univ.) |
| 3rd Author's Name | Masataka Ohira |
| 3rd Author's Affiliation | Saitama Universit(Saitama Univ.) |
| 4th Author's Name | Chun-Ping Chen |
| 4th Author's Affiliation | Kanagawa University(Kanagawa Univ.) |
| 5th Author's Name | Tetsuo Anada |
| 5th Author's Affiliation | Kanagawa University(Kanagawa Univ.) |
| Date | 2015-06-25 |
| Paper # | MW2015-39 |
| Volume (vol) | vol.115 |
| Number (no) | MW-115 |
| Page | pp.pp.7-12(MW), |
| #Pages | 6 |
| Date of Issue | 2015-06-18 (MW) |