Patent ID: 9479132
Filing Date: 2016-10-25
CPC Classification: H03D,H03G

Claim Text:
1. An apparatus, comprising: a forward mixer path comprising an amplifier, a first mixer, a first input, a second input, and a first output, the forward mixer path configured to receive a first radio frequency signal at the first input, receive an oscillator signal at the second input and provide a baseband signal, the first mixer being configured to receive the oscillator signal, the first mixer configured to down convert the first radio frequency signal and provide a gain, the amplifier being configured to receive the baseband signal and provide an output signal at the first output; and a feedback mixer path comprising a second mixer, a filter, and a resistor capacitor network tuned to a baseband frequency, the feedback mixer path being configured to receive the output signal at the first output and provide a second radio frequency signal at the first input, the second mixer being configured to receive the oscillator signal, wherein the filter is coupled to a node between the resistor-capacitor network and the second mixer.