A SAR-based Fast Automatic Frequency Tuning Circuit in a 3-th Order Active-RC Complex Filter - Details

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Abstract：

This　paper　presents　a　3-th　order　active-RC　complex　filter　with　fast　automatic　frequency　tuning　circuit.　The　bandwidth　and　center　frequency　of　a　complex　filter　are　mainly　related　to　the　absolute　time　constant　value　of　resistors　and　capacitors.　Due　to　the　process　variation,　the　value　may　vary　even　over　±40%.　A　frequency　tuning　circuit　for　active-RC　complex　filter　can　avoid　the　affect　of　process　variation　and　provide　ideal　frequency　response.　This　paper　proposed　an　on-chip　fast　frequency　tuning　circuit　with　successive　approximation　register　(SAR)　logic.　Compared　with　the　conventional　counter-based　logic,　the　proposed　circuit　can　exhibit　high　tuning　speed.　This　3-th　order　active-RC　complex　filter　with　5-bit　fast　automatic　tuning　circuit　is　designed　in　SMIC　55nm　process.　©　2021　IEEE.

Keyword：

Timing circuits Frequency response Passive filters Tuning Computer circuits

Author Community：

[ 1 ] [Jin, Boyong]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 2 ] [Chen, Zhijie]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 3 ] [Liu, Xu]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 4 ] [Shen, Zhiqi]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 5 ] [Bao, Yucheng]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 6 ] [Xing, Yanhui]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China
[ 7 ] [Wan, Peiyuan]Beijing University of Technology, Beijing Embedded System Key Lab, Faculty of Information Technology, Beijing, China

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Source ：

ISSN： 2163-5048

Year： 2021

Volume： 2021-October

Page： 204-207

Language： English

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 12

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