Patent ID: 7389100
Filing Date: 2008-06-17
Classification: H03C,H03D,H04B,H04L

Abstract:
1. An in-phase and quadrature-phase direct-conversion frequency converter, comprising: an input terminal; an in-phase output terminal; a quadrature-phase output terminal; an in-phase path including an odd number of series-coupled inverters and a first flip-flop, coupled between the input terminal and the in-phase output terminal; and a quadrature-phase path including an even number of series-coupled inverters and a second flip-flop, coupled between the input terminal and the quadrature-phase output terminal; wherein the in-phase path and the quadrature-phase path output in-phase and quadrature phase control signals, respectively, that are substantially n·90 degrees out of phase with one another where n is an integer.