Title :
Automatic tuning of high-Q filters based on envelope detection
Author :
Karsilayan, Aydin Ilker ; Schaumann, Rolf
Author_Institution :
Dept. of Electr. & Comput. Eng., Portland State Univ., OR, USA
Abstract :
High-Q filter tuning based on envelope detection is discussed. The proposed tuning scheme is simple and can be used for high-frequency, high-Q filters. The circuit was designed using a 1.2 μm CMOS process, with a 3 V single supply voltage. As a demonstration, a second-order bandpass section is used in the simulations, but the method can also be applied to lowpass and highpass second-order sections
Keywords :
CMOS integrated circuits; Q-factor; active filters; band-pass filters; circuit tuning; high-pass filters; low-pass filters; mixed analogue-digital integrated circuits; signal detection; transfer functions; 1.2 micron; 3 V; CMOS process; automatic tuning; envelope detection; high Q-factor filters; high-Q filter tuning; high-frequency filters; highpass second-order sections; lowpass second-order sections; second-order bandpass section; Band pass filters; Circuit optimization; Electronic mail; Envelope detectors; Q factor; Resonant frequency; Time domain analysis; Transfer functions; Tuning; Voltage;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780853
