Low-cost feedback-enabled LNAs in 45nm CMOS

Abstract

Multistandard, flexible and wideband front-ends emerge to cover an increasing variety of wireless standards. Meanwhile, expensive downscaled CMOS calls for robust, area-efficient circuit solutions. This work presents such low-area, low-cost feedback-enabled LNAs in 45nm CMOS. Wideband or narrow-band operation, exceeding 10GHz is achieved by selecting an appropriate compact load. Several state-of-the-art versions are presented such as a 0.008mm2 3-10GHz UWB LNA with flat 3dB NF consuming 7mW, and a 0.02 mm2 8-16GHz LNA with 4dB NF, 17dB gain and 4.2kV ESD protection.