| Presentation | 2007-07-26 Center Frequency and Bandwidth Discretely Tunable Bandpass Filter Kunihiro KAWAI, Hiroshi OKAZAKI, Shoichi NARAHASHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a novel and simple-structured digital tunable bandpass filter that individually controls the center frequency and bandwidth. The filter consists of tunableλ/4-long resonators and tunable J-inverters. The tunable λ/4-long resonator has a transmission line with a comb-shaped pattern on both sides of the line and multiple switches placed between the teeth of the comb-shaped pattern. The tunable J-inverter comprises a microstrip gap having multiple conductor tips and switches in the gap. A prototype two-pole tunable bandpass filter is designed and fabricated to verify the feasibility of the proposed filter. The tuning ratios of the measured bandwidth and center frequency are 2.6 and 1.14, respectively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Resonator / J-inverter / Bandpass Filter / Center Frequency Tuning / Bandwidth Tuning |
| Paper # | SR2007-32 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2007/7/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Center Frequency and Bandwidth Discretely Tunable Bandpass Filter |
| Sub Title (in English) | |
| Keyword(1) | Resonator |
| Keyword(2) | J-inverter |
| Keyword(3) | Bandpass Filter |
| Keyword(4) | Center Frequency Tuning |
| Keyword(5) | Bandwidth Tuning |
| 1st Author's Name | Kunihiro KAWAI |
| 1st Author's Affiliation | Research Laboratories, NTT DoCoMo, Inc.() |
| 2nd Author's Name | Hiroshi OKAZAKI |
| 2nd Author's Affiliation | Research Laboratories, NTT DoCoMo, Inc. |
| 3rd Author's Name | Shoichi NARAHASHI |
| 3rd Author's Affiliation | Research Laboratories, NTT DoCoMo, Inc. |
| Date | 2007-07-26 |
| Paper # | SR2007-32 |
| Volume (vol) | vol.107 |
| Number (no) | 162 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |