Low-loss and high-flexibility radio frequency front-end circuit for multi-radio coexistence

Abstract

An RF front-end circuit for multi-radio coexistence may include a K-pole M-throw (KPMT) switch having K poles including at least a first pole and a second pole as well as M throws including at least a first throw and a second throw, a single-pole N-throw (SPNT) switch having a single pole as well as N throws including at least a first throw and another throw, a splitting and combining circuit having an input node as well as a first output node and a second output node, and a low noise amplifier (LNA) having an input node and an output node. The first pole among the K poles is coupled to a first radio, and the second pole among the K poles is coupled to a second radio. Additionally, there is no switch coupled between the output node of the LNA and the input node of the splitting and combining circuit.

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