Patent ID: 9059796
Filing Date: 2015-06-16
Classification: H03D,H04B

Abstract:
1. A radio frequency (RF) receiver comprising: a first set of transconductance cells configured to produce respective weighted current signals proportional to an input voltage signal; a plurality of frequency conversion cells coupled to the first set of transconductance cells and configured to mix the weighted current signals with a plurality of non-overlapping local oscillator (LO) signals to produce downconverted current signals; and a plurality of transimpedance amplifiers coupled to the plurality of frequency conversion cells and configured to produce output voltage signals proportional to the downconverted current signals, wherein the plurality of transimpedance amplifiers comprise a second set of transconductance cells, each input to the plurality of transimpedance amplifiers being coupled to each output of the plurality of frequency conversion cells, wherein each of the first set and second set of transconductance cells has an effective transconductance of a first magnitude for frequency components of the input voltage signal arising from a first harmonic and an effective transconductance of a second magnitude less than the first magnitude for frequency components of the input voltage signal arising from harmonics at integer multiples of the first harmonic.