Patent ID: 8351978

Claim:
A circuit comprising: a low noise amplifier (LNA) having a first output lead and a second output lead; a passive switching core (PSC) having a first signal input lead, a second signal input lead, a first signal output lead, a second signal output lead, a first local oscillator input lead, and a second local oscillator input lead; a transimpedance amplifier filter (TIA-filter) having a first input lead, a second input lead, a first output lead, and a second output lead; a degenerative-impedance gain-tuning network (Zdeg network) having a first Zdeg network input lead, a second Zdeg network input lead, a first Zdeg network output lead and a second Zdeg network output lead, wherein the first Zdeg network input lead is coupled to the first output lead of the LNA and the second Zdeg network input lead is coupled to the second output lead of the LNA, and wherein the first Zdeg network output lead is coupled to the first signal input lead of the PSC and the second Zdeg network output lead is coupled to the second signal input lead of the PSC; wherein the LNA, the Zdeg network, the PSC, and the TIA-filter together form a receiver, and wherein a receiver gain is adjusted by the Zdeg network.