Title :
An automatic tuning scheme for high frequency bandpass filters
Author :
Liu, Hengsheng ; Karsilayan, Aydin I.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
An automatic tuning scheme for continuous-time bandpass filters based on a frequency synthesizer and a peak detector is proposed. A gm-C second-order filter is designed to demonstrate the proposed tuning scheme. The circuit is designed in AMI 0.5μm process. The measured frequency tuning error is 0.25%, and the Q tuning error is 3% for a 200 MHz filter with desired Q of 28.6.
Keywords :
Q-factor; VHF filters; band-pass filters; circuit tuning; continuous time filters; frequency synthesizers; peak detectors; 0.5 micron; 200 MHz; Q tuning error; automatic tuning scheme; continuous-time bandpass filters; frequency synthesizer; frequency tuning error; gm-C second-order filter; high-frequency bandpass filters; peak detector; tuning scheme; Ambient intelligence; Attenuators; Band pass filters; Circuit optimization; Detectors; Frequency conversion; Frequency synthesizers; Q factor; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010283
