Systems and methods for reducing average current consumption in a local oscillator path

摘要

A method for reducing average current consumption in a local oscillator (LO) path is disclosed. An LO signal is received at a master frequency divider and a slave frequency divider. Output from the master frequency divider is mixed with an input signal to produce a first mixed output. Output from the slave frequency divider is mixed with the input signal to produce a second mixed output. The second mixed output is forced to be in phase with the first mixed output.

主权项

1. A method for reducing average current consumption in a local oscillator (LO) path, comprising:
receiving an LO signal at a master frequency divider and a slave frequency divider; mixing output from the master frequency divider with an input signal to produce a first mixed output; mixing output from the slave frequency divider with the input signal to produce a second mixed output; and forcing the second mixed output to be in phase with the first mixed output wherein the forcing comprises:
determining a phase difference between the output from the master frequency divider and the output from the slave frequency divider; andinverting a phase of the slave frequency divider using a cross-coupled switch based on the phase difference.