Patent ID: 8149955

Claim:
A receiver arrangement, comprising: a single ended multiband feedback amplifier; at least one single ended input, differential output mixer arrangement comprising a main mixer and a trim mixer; and a mixer feedback loop circuit configured to receive differential output signals generated by the mixer arrangement, generate a feedback signal based on the received differential output signals, and provide the feedback signal to the trim mixer of the mixer arrangement to thereby minimize DC-offset and second order intermodulation products, wherein: the main mixer comprises differential mixer circuitry having a pair of input nodes that are DC-coupled to respective differential inputs of a balanced signal pair generated by a signal generator, a second node connected to a common node and receiving a signal output from the single ended multiband feedback amplifier, and an output node that outputs the differential output signal; and the trim mixer comprises differential mixer circuitry having a pair of input nodes that are AC-coupled to the respective differential inputs of the balanced signal pair, a second node connected to a common node, and an output node connected to the output node of the differential mixer circuitry of the main mixer; wherein: the common node of the main mixer and the common node of the trim mixer are AC-coupled with each other, and the trim mixer receives the feedback signal from the mixer feedback loop circuit.