| Presentation | 2008-03-06 High Linearity SiGe-MMIC Quadrature Modulator Having Self Current Control Circuit with Output Power Detector for 0.4-5.8GHz Cognitive Radio Transceiver Shintaro SHINJO, Koji TSUTSUMI, Fumiki ONOMA, Noriharu SUEMATSU, Hiroshi HARADA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A 0.4-5.8GHz high linearity SiGe-MMIC quadrature modulator (Q-MOD) having a novel self mixer current control circuit is described. This control circuit, which consists of an output power detector and an envelope current feedback circuit, is applied to unit mixers, and it automatically controls the mixer current according to the output power level. As a result, high linearity can be obtained. In simulation, the proposed Q-MOD shows the P_<1dB> improvement of more than 2.6dB under the CW condition of the 0.4-5.8GHz frequency range compared with the conventional Q-MOD. In measurement, the Q-MOD achieves P_<1dB> improvement of more than 3.0dB under the same condition. It also improves the output power with EVM of 3.0% for both modulation conditions of UHF wireless systems (16QAM/OFDM, 0.4GHz) and IEEE802.11a W-LAN (64QAM-OFDM, 5.2GHz). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Cognitive Radio / Microwave / SiGe / MMIC / Quadrature Modulator |
| Paper # | SR2007-86 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2008/2/28(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) | High Linearity SiGe-MMIC Quadrature Modulator Having Self Current Control Circuit with Output Power Detector for 0.4-5.8GHz Cognitive Radio Transceiver |
| Sub Title (in English) | |
| Keyword(1) | Cognitive Radio |
| Keyword(2) | Microwave |
| Keyword(3) | SiGe |
| Keyword(4) | MMIC |
| Keyword(5) | Quadrature Modulator |
| 1st Author's Name | Shintaro SHINJO |
| 1st Author's Affiliation | Mitsubishi Electric Corp.() |
| 2nd Author's Name | Koji TSUTSUMI |
| 2nd Author's Affiliation | Mitsubishi Electric Corp. |
| 3rd Author's Name | Fumiki ONOMA |
| 3rd Author's Affiliation | Mitsubishi Electric Corp. |
| 4th Author's Name | Noriharu SUEMATSU |
| 4th Author's Affiliation | Mitsubishi Electric Corp. |
| 5th Author's Name | Hiroshi HARADA |
| 5th Author's Affiliation | National Institute of Information and Communications Technology |
| Date | 2008-03-06 |
| Paper # | SR2007-86 |
| Volume (vol) | vol.107 |
| Number (no) | 519 |
| Page | pp.pp.- |
| #Pages | 7 |
| Date of Issue | |