6.3 A 0.9V Dual-Channel Filtering-by-Aliasing Receiver Front-End Achieving +35dBm IIP3 and <-81dBm LO Leakage Supporting Intra-and Inter-Band Carrier Aggregation

Abstract

Programmable receivers have drawn a lot of attention in recent years, especially those exploiting periodically time-varying (PTV) circuits. N-path filters and mixer-first receivers [1– 3] achieve sharp filtering and good linearity but can suffer from high LO leakage (> -70 dBm), which is not compliant with the FCC requirements [4]. In addition, they do not support multi-carrier operation very well [5].