Project supported by the National High Technology Research and Development Program of China (No.2007AA01Z282)
An eighth order active-RC filter for low-IF and zero-IF DVB tuner applications is presented, which is implemented in Butterworth biquad structure. An automatic frequency tuning circuit is introduced to compensate the ...
supported by the National High Technology Research and Development Program of China(No.2007AA01Z282);the National Natural Science Foundation of China(No.60876019)
A fully-differential charge pump(FDCP)with perfect current matching and low output current noise is realized for phase-locked loops(PLLs).An easily stable common-mode feedback(CMFB)circuit which can handle high ...
A quadrature mixer with a shared transconductor stage is analyzed,including voltage conversion gain, linearity, noise figure, and image rejection. The analysis indicates it has better performance than a conventional G...