A linear current-reused LNA for 3.1-10.6GHz UWB receivers

Abstract

An ultra-wide-band CMOS low-noise amplifier (LNA) employing a common-gate (CG) stage for wideband input matching is presented. This LNA utilizes the concurrent noise and distortion canceling techniques. Moreover, the current-reused technique exploiting the passive network instead of using the active and power consuming element is introduced to preserve the power consumption while contributing to the noise canceling trend. In other words, this topology is capable of canceling the noise effect of input transistor without consuming much current. Simulation results based on a 0.13 μm standard RFCMOS technology shows that a power gain of 13.5 dB and the noise figure of 2.7-4.2 dB over the −3-dB bandwidth of 2.6-10.7 GHz. With the presence of a weak inversion biased transistor, an input third-order intercept point (IIP3) of +5 dBm is achieved. The power consumption is 13.5 mW from a single 1.2 V power supply.

A 1V folded common-gate CMOS LNA for full UWB band

“…Full UWB-band LNAs designed using several topologies have recently been published, such as distributed amplifiers [4], feedback amplifiers [5,6], common gate [7,2,8], or LC ladder filters LNA [1]. With technology scaling, short channel devices suffer from poor linearity as the low supply voltage is mandated and due to high field mobility effect.…”