A third order delta-sigma modulator employing shared opamp technique for WCDMA on 0.18um CMOS

Ghazal Fahmy, Daisuke Kanemoto, Haruichi Kanaya, Keiji Yoshida, Ramesh Pokharel, Awinash Anand

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

Analog to digital converter is a vital component in a wireless transceiver. High order loop filter is one of conventional approach to attain high resolution delta-sigma modulator which required one opamp for each integrator. A third orders delta-sigma modulator (DSM) has been designed utilizing shared opamp technique to reduce number of opamp required and decrease power consumption. Moreover, this architecture has relaxed comparator speed which is appropriate for wireless applications. First and second stages are sharing one opamp in integration and sampling phase. The proposed circuit has been designed on TSMC 0.18um CMOS technology. 2MHz Bandwidth, 50dB Peak SQNR, which is suitable for WCDMA, have been achieved.

元の言語英語
ページ(範囲)1204-1209
ページ数6
ジャーナルIEICE Electronics Express
8
発行部数15
DOI
出版物ステータス出版済み - 8 10 2011

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Operational amplifiers
Modulators
modulators
CMOS
integrators
analog to digital converters
transmitter receivers
sampling
bandwidth
filters
high resolution
Digital to analog conversion
Transceivers
Electric power utilization
Sampling
Bandwidth
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

これを引用

A third order delta-sigma modulator employing shared opamp technique for WCDMA on 0.18um CMOS. / Fahmy, Ghazal; Kanemoto, Daisuke; Kanaya, Haruichi; Yoshida, Keiji; Pokharel, Ramesh; Anand, Awinash.

:: IEICE Electronics Express, 巻 8, 番号 15, 10.08.2011, p. 1204-1209.

研究成果: ジャーナルへの寄稿記事

Fahmy, Ghazal ; Kanemoto, Daisuke ; Kanaya, Haruichi ; Yoshida, Keiji ; Pokharel, Ramesh ; Anand, Awinash. / A third order delta-sigma modulator employing shared opamp technique for WCDMA on 0.18um CMOS. :: IEICE Electronics Express. 2011 ; 巻 8, 番号 15. pp. 1204-1209.
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