DUAL WATCH RADIO FREQUENCY RECEIVER

摘要

A dual watch receiver is provided that, when operating in a single watch mode, receives a radio frequency (RF) signal, determines a signal quality metric associated with a received RF signal, and based on the determined signal quality metric, determines whether to route a same RF signal to only a first receiver path or to both of the first receiver path and a second receiver path, wherein the first receiver path and second receiver path process a received RF signal in parallel.

主权项

1. A radio frequency (RF) receiver capable of operating in both a dual watch mode and a single watch mode, the RF receiver comprising:
a low noise amplifier (LNA) that is configured to amplify a received RF signal; a first receiver path coupled to the LNA, wherein the first receiver path comprises a first mixer that is configured to downconvert an RF signal received from the LNA to a first intermediate frequency (IF) to produce a first IF signal; a second receiver path coupled to the LNA, wherein the second receiver path comprises a second mixer that is configured to downconvert an RF signal received from the LNA to a second IF to produce a second IF signal, wherein the second IF is different from the first IF, and wherein the first receiver path and second receiver path process a received RF signal in parallel; a processor coupled to each of the first receiver path and the second receiver path, wherein the processor is configured to, when operating in single watch mode:
determine a signal quality metric associated with a received RF signal; andbased on the determined signal quality metric, determine whether to route an amplified version of a same RF signal to only one of the first receiver path and the second receiver path or to route amplified versions of a same RF signal to both the first receiver path and the second receiver path.