| Presentation | 2006-07-27 RF Circuits with RF-MEMS devices Shoichi NARAHASHI, Hiroshi OKAZAKI, Atsushi FUKUDA, Kunihiro KAWAI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For future mobile services, the development of "reconfigurable RF circuits" for mobile radios is expected to operate among different wireless communication standards and spectra. As a part of research on the reconfigurable RF circuits, this paper presents a novel scheme for a multi-band power amplifier (PA) and a tunable filter. The PA employs a low-loss reconfigurable matching network with RF-MEMS (Micro-Electro-Mechanical-Systems) switches. By controlling the on/off status of each RF-MEMS switch, the PA achieves multi-band amplification. The proposed tunable filter comprises tunable resonators and coupling circuits. The tunable resonator has a comb-shaped end-shorted transmission line and switches. Resonant frequency of the resonator changes according to the state of the switches. Besides these proposed devices, this paper also describes recent research and development activities on RF-MEMS switches. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Mobile ubiquitous / Reconfigurable RF circuits / Power amplifiers / Filters / RF-MEMS devices |
| Paper # | SR2006-14 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2006/7/20(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | RF Circuits with RF-MEMS devices |
| Sub Title (in English) | |
| Keyword(1) | Mobile ubiquitous |
| Keyword(2) | Reconfigurable RF circuits |
| Keyword(3) | Power amplifiers |
| Keyword(4) | Filters |
| Keyword(5) | RF-MEMS devices |
| 1st Author's Name | Shoichi NARAHASHI |
| 1st Author's Affiliation | NTT DoCoMo Inc.() |
| 2nd Author's Name | Hiroshi OKAZAKI |
| 2nd Author's Affiliation | NTT DoCoMo Inc. |
| 3rd Author's Name | Atsushi FUKUDA |
| 3rd Author's Affiliation | NTT DoCoMo Inc. |
| 4th Author's Name | Kunihiro KAWAI |
| 4th Author's Affiliation | NTT DoCoMo Inc. |
| Date | 2006-07-27 |
| Paper # | SR2006-14 |
| Volume (vol) | vol.106 |
| Number (no) | 188 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |