A Sub-7-GHz Linear Receiver for 5G Local Area Base Station

Abstract

This article presents a sub-7-GHz receiver (RX) for the fifth-generation (5G) local area base station applications. A Rauch transimpedance amplifier (TIA) with a third-order high-pass impedance in its feedback is adopted to enhance RX selectivity and provide higher loop gain (LG) at the band- width edge, improving in-band linearity for high-bandwidth applications. An N-path notch filter, sharing switches with down-converting passive mixers, is incorporated in the low-noise transconductance ampli