Title :
New CMOS balanced output transconductor and application to GM-C biquad filter
Author :
Mahmoud, Soliman A. ; Awad, Ihas A.
Author_Institution :
Electron. & Commun. Eng. Dept., Cairo Univ., Fayoum, Egypt
Abstract :
A new CMOS voltage controlled balanced output transconductor (BOTA) is introduced. Application of the CMOS BOTA in realizing mixed-mode filter implementation featuring electronic tunability is presented. The filter realizes second order lowpass, bandpass, highpass, allpass and notch responses. The proposed filter architecture uses grounded capacitors and allows modifying the quality factor without changing the center frequency. PSpice simulations are given to confirm the theoretical analysis.
Keywords :
CMOS analogue integrated circuits; Q-factor; SPICE; all-pass filters; band-pass filters; biquadratic filters; circuit tuning; differential amplifiers; high-pass filters; low-pass filters; notch filters; operational amplifiers; CMOS BOTA; GM-C biquad filter; PSPICE simulation; all-pass response; band-pass response; electronic tunability; grounded capacitor; high-pass response; low-pass response; mixed-mode filter; notch response; quality factor; voltage controlled balanced output transconductor; Band pass filters; Capacitors; Circuits; Communication system control; Frequency; MOSFETs; Q factor; Threshold voltage; Transconductors; Voltage control;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205581
