A CMOS continuous-time active biquad filter for gigahertz-band applications

A general high-Q biquad lter architecture capable of operating in the GHz range is proposed and analyzed. This lter, which is usable in bandpass and lowpass applications, utilizes two e ective Q-enhancement techniques to circumvent the low-Q characteristics inherent in the circuit. Simulation results employing standard 0.5m CMOS technology have successfully veri ed that the center frequency tuning and hybrid Q-tuning techniques operate between 1GHz to 2.3GHz center frequencies withQ rangingfrom4.8toover 1000. A tunable bandpass lter with a center frequency at

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: Yuyu Chang, John Choma Jr., Jack Wills
• Keywords: Center Frequency, Center Frequency Tuning, Hardware, ISCAS 1999, Tunable Bandpass Lter