| Presentation | 2008-08-28 A Microstrip Bandpass Filter with Ultra Wide Stopband using Folded Stepped-Impedance Resonators Somboon THEERAWISITPONG, Toshitatsu SUZUKI, Hirotoshi YAMADA, Noboru MORITA, Yozo UTSUMI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We developed a bandpass filter using folded stepped-impedance resonators where center frequency is 2GHz with 60MHz bandwidth for UMTS (Universal Mobile Telecommunication System) band. Out-of-band rejection is designed by stepped-impedance resonator characteristics, and pass-band is designed by a procedure which is proposed in this paper. The measurement results of a prototype Tchebycheff filter are well agreed with the simulation results on both pass-band and out-of-band ranges. The measured center frequency is 2.01GHz, pass bandwidth is 69MHz with 0.3dB-ripple, and pass-band insertion loss is 1.45dB. The unloaded quality factor Q_0 is 488.63. And the out-of-band attenuation is bigger than 30dB from approximately 2.5 to 9.5GHz. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microstrip Filter / Ultra Wide Stopband / Stepped-Impedance Resonator / Harmonic Suppression |
| Paper # | MW2008-80 |
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| Conference Information | |
| Committee | MW |
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| Conference Date | 2008/8/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Microwaves (MW) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Microstrip Bandpass Filter with Ultra Wide Stopband using Folded Stepped-Impedance Resonators |
| Sub Title (in English) | |
| Keyword(1) | Microstrip Filter |
| Keyword(2) | Ultra Wide Stopband |
| Keyword(3) | Stepped-Impedance Resonator |
| Keyword(4) | Harmonic Suppression |
| 1st Author's Name | Somboon THEERAWISITPONG |
| 1st Author's Affiliation | Department of Electrical and Electronic Engineering, Nippon Institute of Technology() |
| 2nd Author's Name | Toshitatsu SUZUKI |
| 2nd Author's Affiliation | Department of Electrical and Electronic Engineering, Nippon Institute of Technology |
| 3rd Author's Name | Hirotoshi YAMADA |
| 3rd Author's Affiliation | Department of Electrical and Electronic Engineering, Nippon Institute of Technology |
| 4th Author's Name | Noboru MORITA |
| 4th Author's Affiliation | Department of Electrical and Electronic Engineering, Nippon Institute of Technology |
| 5th Author's Name | Yozo UTSUMI |
| 5th Author's Affiliation | Department of Communications Engineering, National Defense Academy |
| Date | 2008-08-28 |
| Paper # | MW2008-80 |
| Volume (vol) | vol.108 |
| Number (no) | 195 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |