Patent ID: 7519349

Claim:
A digital receiver, comprising: an amplifier; a plurality of sampling mixers coupled to receive an A signal and a jB signal from the amplifier, wherein either: 1) a first pair of the sampling mixers are configured to receive a C local oscillator signal and a second pair of the sampling mixers are configured to receive a jD local oscillator signal, the jD local oscillator signal being phase delayed with respect to the C local oscillator signal; or 2) the sampling mixers are coupled to receive a local oscillator signal and have outputs coupled to a plurality of first switches and a plurality of second switches, the first switches receiving a C control signal derived from the local oscillator signal and the second switches receiving a jD control signal derived from the oscillator signal, the C control signal being phase delayed with respect to the jD control signal; a plurality of integration devices coupled to receive resultant signals from the sampling mixers; and a plurality of summers coupled to the integration devices, the summers providing a first sum of AC-BD and a second sum of BC+AD.