Patent ID: 8060048
Filing Date: 2011-11-15
Classification: H03D

Abstract:
1. A quadrature mixer arrangement for converting a first signal at a first frequency to a second signal at a second frequency, the arrangement having a first mixer operatively coupled to a first and a second terminal, wherein the first terminal is a positive radio-frequency terminal and the second terminal is a negative radio-frequency terminal; and a second mixer coupled in parallel with the first mixer and operatively coupled to the first and second terminal, wherein the first mixer is arranged to be conductive for a first and/or a second state of a first mixing signal, and arranged to mix the first signal with the first mixing signal to provide the second signal; and the second mixer is arranged to be conductive for a first and/or a second state of a second mixing signal, and arranged to mix the first signal with the second mixing signal to provide the second signal, the arrangement comprising: a set of switch devices provided in a signal path between the mixers and the first and second terminals, wherein