A Fully Balanced Wide-Frequency Current-Tunable Phase-Lead All-Pass Filter

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Isaravuth Seedadan
Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’'s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520
Wanlop Surakumpontorn
Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’'s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520
Banlue Srisuchinwong
Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani 12121

Abstract

A new integrable fully-balanced wide-frequency current-tunable phase-lead all-passfilter is presented. The architecture of the circuit is relatively simple and symmetry with differentialsignals. The frequency f0 where the magnitude and phase shift of the transfer function areapproximately 0 dB and +90 degrees, respectively, is linearly tunable, through a bias current,over a wide-frequency sweep range of approximately three orders of magnitude. The maximumuseful frequency f 0 is in excess of 220 MHz.

Article Details

Issue
Vol. 24 No. 1 (2001): January - April
Section
Original Articles
Author Biographies

Isaravuth Seedadan, Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’'s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520

Graduate Student, Department of Electronic Engineering.

Wanlop Surakumpontorn, Faculty of Engineering and Research Center for Communication and Information Technology King Mongkut’'s Institute of Technology Ladkrabang, Ladkrabang, Bangkok 10520

Professor, Department of Electronic Engineering.

Banlue Srisuchinwong, Sirindhorn International Institute of Technology, Thammasat University, Pathum Thani 12121

Associate Professor, School of Electrical Engineering and Information Technology.