Patent ID: 7376206

Claim:
A receiver unit comprising: a receiver operative to receive and condition a received signal in accordance with one or more control signals to generate a conditioned signal and operative to downconvert and digitize the conditioned signal to provide inphase (I IN ) and quadrature (Q IN ) samples, wherein the receiver includes one or more circuit elements having one or more characteristics that are adjustable by the one or more control signals; a controller coupled to the receiver and operative to determine a phase rotation corresponding to an operating state defined by the one or more control signals; and a phase rotator coupled to the receiver and operative to receive and rotate a phase of the conditioned signal by an amount related to the determined phase rotation, wherein the phase rotator rotates the phase of the I IN and Q IN samples to generate phase rotated I ROT and Q ROT samples, the phase rotator comprising a first set of multiplexers operative to receive the I IN and Q IN samples and to provide the I IN or Q IN samples based on a first signal, a first set of exclusive-OR gates coupled to the first set of multiplexers and operative to selectively invert the received samples based on a second signal, wherein outputs of the first set of exclusive-OR gates comprise the I ROT samples, a second set of multiplexers operative to receive the Q IN and I IN samples and to provide the Q IN or I IN samples based on the first signal, and a second set of exclusive-OR gates coupled to the second set of multiplexers and operative to selectively invert the received samples based on a third signal, wherein outputs of the second set of exclusive-OR gates comprise the Q ROT samples.