Patent ID: 7120415
Filing Date: 2006-10-10
Classification: H04B

Abstract:
1. A radio receiver operable in a zero-IF and a low-IF mode, comprising an input for a radio frequency signal, including quadrature down-conversion means for translating the radio frequency signal to an intermediate frequency and for generating in-phase and quadrature signals, first and second analogue-to-digital conversion means for digitising each of the in-phase and quadrature signals, wherein means for disabling operation of one of the first and second analogue-to-digital conversion means when the receiver operates in a low IF mode, low-IF digital signal processing means are provided for operating on a single digitised signal to generate decoded digital output data in the low-IF mode and zero-IF digital signal processing means are provided for operating on in-phase and quadrature digitised signals to generate decoded digital output data in the zero-IF mode.