A 8^th-order Chebyshev Gm-C lowpass filter for DVB-H tuner

Abstract

A Sth-order Chebyshev Gm-C lowpass filter for the digital video broadcasting-handheld (DVB-H) tuner is fabricated in O.ISf.1m RF CMOS process. The filter implements lowpass transfer function with tunable cutoff frequency in the range of 3MHz to 4MHz. The HD3 is about -59dB and the stop-band attenuation at 5.25MHz is better than 29dB. The current consumption of the filter is 4.2mA, and the automatic tuning circuits consume the current of I.55mA with I.SV supply.