Patent ID: 7474885
Filing Date: 2009-01-06
Classification: H03D

Abstract:
1. A circuit comprising: a first set of differential switches to generate a first mixer output, the first set of differential switches having source terminals, a differential input terminal, gate terminals, and first mixer output terminals, wherein for the first set of differential switches, the source terminals of the first set of differential switches are coupled to the differential input terminal and the gate terminals of the first set of differential switches are coupled to a first differential oscillator input; a second set of differential switches to generate a second mixer output, the second set of differential switches having source terminals, gate terminals, and second mixer output terminals, wherein for the second set of differential switches, the source terminals of the second set of differential switches are coupled to the first mixer output terminals to receive the first mixer output and the gate terminals of the second set of differential switches are coupled to a second differential oscillator input; and a filter coupled between the second mixer output terminals.