Patent ID: 7899426
Filing Date: 2011-03-01
Classification: H04B

Abstract:
1. 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 (TIA) having a first input lead, a second input lead, a first output lead, and a second output lead; a first degenerative impedance element (Zdeg) having a first lead and a second lead, wherein the first lead of the first Zdeg is coupled to the first output lead of the LNA, and wherein the second lead of the first Zdeg is coupled to the first signal input lead of the PSC; and a second degenerative impedance element (Zdeg) having a first lead and a second lead, wherein the first lead of the second Zdeg is coupled to the second output lead of the LNA, and wherein the second lead of the second Zdeg is coupled to the second signal input lead of the PSC, wherein the LNA, the first and second Zdegs, the PSC, and the TIA form a receiver.