講演名 2008-07-11
A 425MHz Narrow Channel Spacing Frequency Synthesizer(Session9A: Silicon Devices IV)
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抄録(和)
抄録(英) A 425MHz fractional-N frequency synthesizer as shown in Figurel is implemented by on a 0.18μm CMOS technology with fully integrated LC-VCO and fractional-N division block (sigma delta modulator). A 425MHz fractional-N frequency synthesizer can be adopted for the Industrial, Scientific and Medical radio bands (ISM bands), there are many competitive ongoing research projects for low data rate, power and narrow bandwidth transceiver applications such as remote key entry, home automation, low power telemetry. Usually a fully integrated frequency synthesizer based on LC-VCO is hard to achieve low phase noise characteristics because of modeling of integrated inductor and varactor capacitor. Therefore, it is hard to achieve narrow band characteristics. The main focus of this paper is to design LC-VCO for low phase noise for ISM and, digital blocks using behavioral descriptions, and to implement of fully integrated frequency synthesizer. The designed circuits is simulated that phase noise is -130dBc/Hz, locking time is about 30μs and channel spacing is 12.5kHz. These results are suitable for standard of ISM band RF transceivers.
キーワード(和)
キーワード(英) ISM band / LC-VCO / Frequency synthesizer
資料番号 ED2008-93,SDM2008-112
発行日

研究会情報
研究会 ED
開催期間 2008/7/2(から1日開催)
開催地(和)
開催地(英)
テーマ(和)
テーマ(英)
委員長氏名(和)
委員長氏名(英)
副委員長氏名(和)
副委員長氏名(英)
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幹事補佐氏名(和)
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講演論文情報詳細
申込み研究会 Electron Devices (ED)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) A 425MHz Narrow Channel Spacing Frequency Synthesizer(Session9A: Silicon Devices IV)
サブタイトル(和)
キーワード(1)(和/英) / ISM band
第 1 著者 氏名(和/英) / Younwoong Chung
第 1 著者 所属(和/英)
Department of Electronic Engineering, Sogang University
発表年月日 2008-07-11
資料番号 ED2008-93,SDM2008-112
巻番号(vol) vol.108
号番号(no) 121
ページ範囲 pp.-
ページ数 6
発行日