| Presentation | 2006-09-05 Compact Microstrip Bandpass Filters with High Frequency Selectivity and Very Wide Stopband Hitoshi MIKI, Zhewang MA, Yoshio KOBAYASHI, Tetsuo ANADA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, two novel three-pole microstrip bandpass filters (BPFs) with sharp attenuations and wide stopbands are developed through a combined use of composite resonators and stepped impedance resonators (SIRs). By using a full-wave electromagnetic simulator, the filters are designed with a midband frequency of 1.0GHz and a fractional bandwidth of 6%. The measured frequency responses of the filters agree well with the simulated results, and show a transmission zero at about 0.9GHz and 1.1GHz, respectively. The transition from the passband to the stopband is thereby sharp and deep. Moreover, up to approximately 3.11f_0 or 5.2f_0, the stopband attenuations of the two filters are larger than 20dB. In the design of the second BPF, the resonators and admittance inverters of the filter are miniaturized. As a result, the area occupied by the second filter is deduced to about one half that of the first filter. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Bandpass Filter / Composite Resonator / Stepped Impedance Resonator / Transmission Zero / Wide Stopband |
| Paper # | MW2006-88 |
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| Committee | MW |
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| Conference Date | 2006/8/29(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) | Compact Microstrip Bandpass Filters with High Frequency Selectivity and Very Wide Stopband |
| Sub Title (in English) | |
| Keyword(1) | Bandpass Filter |
| Keyword(2) | Composite Resonator |
| Keyword(3) | Stepped Impedance Resonator |
| Keyword(4) | Transmission Zero |
| Keyword(5) | Wide Stopband |
| 1st Author's Name | Hitoshi MIKI |
| 1st Author's Affiliation | Department of Electrical and Electronic Systems, Saitama University() |
| 2nd Author's Name | Zhewang MA |
| 2nd Author's Affiliation | Department of Electrical and Electronic Systems, Saitama University |
| 3rd Author's Name | Yoshio KOBAYASHI |
| 3rd Author's Affiliation | Department of Electrical and Electronic Systems, Saitama University |
| 4th Author's Name | Tetsuo ANADA |
| 4th Author's Affiliation | High-Tech Research Center, Kanagawa University |
| Date | 2006-09-05 |
| Paper # | MW2006-88 |
| Volume (vol) | vol.106 |
| Number (no) | 231 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |