An 800MHz to 5GHz Software-Defined Radio Receiver in 90nm CMOS

A 90nm CMOS RX operates over the 800MHz to 5GHz band uses a passive FET mixer driven by a capacitively coupled RF transconductor, and a combination of CT and DT analog FIR and MR filters to achieve >100dB of programmable anti-aliasing. The RX chain has 5 to 5.5dB NF, -3.5dBm IIP3, 39dBm IIP2, 10 to 66dB of gain, and draws 11.4mA from 2.5V and 8 to 28mA (depending on RX mode) from 1V