A Multi-Branch Receiver With Modulated Mixer Clocks for Concurrent Dual-Carrier

Abstract

A multi-branch receiver is introduced that uses mixer-clock modulation to unify the functions of single-carrier and concurrent dual-carrier reception, as well as compressive- sampling spectrum scanning into a single architecture. With CW-modulated mixer clocks, the receiver achieves concurrent reception from two distinct bands and realizes tuned impedance matching that greatly improves i ts out-of-band (OB) linearity. With pseudo-noise (PN)-modulated mixer clocks, the receiver supports rapid spe