Performance Analysis of Active Inductor Based Tunable Band Pass Filter for Multiband RF Front end

摘要

This paper presents an active inductor based low power, low noise tunable RF band pass filter suitable for multiband RF front end circuits. The designed active inductor and RF band pass filter are simulated in 180nm CMOS process using Synopsys tool. The resonators of the top coupled topology of the band pass filter are replaced with the tunable active inductors. The center frequency and the transfer gain can be varied through the controllable current source. The center frequency of the band pass filter is tuned from 2.4 GHz to 12.4 GHz with S21 values varies from 5 dB to 23 dB respectively. The noise figure ranges from 6.8 dB to 11.9dB for the entire tuning range of the band pass filter with less power consumption of 2.9mW.