Design of CMOS VHF/RF biquadratic filters

• In this paper, a class of CMOS biquadratic filter suitable to work at VHF/RF frequency range is presented. The proposed circuit has a simple structure which is analyzed and designed according to a universal G(m)-C biquad filter. Simulation and experimental results show that these filters can work in GHz range and have wide tuning range.

Nyckelord

G(m)-C filter

active inductor

negative impedance

Q-enhancement

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