A Wideband LNA with Gm-Boosted and Noise Cancel Technique

This paper presents the design of a 0.1 to 5GHz wide-band common-gate (CG) low-noise amplifier (LNA) in 130nm CMOS technology. The capacitive cross-coupling topology boosts the equivalent transconductance of input CG transistor. The active differential pairs for bias path contribute to not only noise cancel of input CG and bias transistors, but also flexible input matching. Moreover, the circuit is inductorless, only occupying an area of 0.015mm
²
. The voltage gain ranges from 17.7 to 20.0dB. The minimum noise Figure is 3. 04dB, and IIP3 is -1.7dBm. The circuit consumes 4.4mW under a 1.2V single voltage supply.