An Ultra-Low-V oltage 24-GHz Flicker-Noise-Free RF Receiver Front End Based on S

Abstract

In this article, an ultra-low-voltage 2.4-GHz radio frequency (RF) receiver front-end architecture targeting the removal of output flicker noise is presented, making it possible to use zero-IF topology for narrow-band communication standards. The trans-impedance amplifier (TIA) is built on the proposed hybrid operational trans-conductance amplifier (OTA) with a switched-capacitor (SC) amplifier as the first gain stage and an active primary–secondary amplifier as the second gain stage, achieving