Patent ID: 8189717
Filing Date: 2012-05-29
Classification: H03D

Abstract:
1. A method of low Intermediate Frequency quadrature radio reception comprising: receiving a slot-based radio signal at a carrier frequency, said radio signal comprising successive frames each comprising a set of reception time slots, and producing an input signal; producing local oscillator signal In-phase and Quadrature components having a local oscillator frequency; mixing said input signal with said local oscillator signal In-phase and Quadrature components and producing Intermediate Frequency signal In-phase and Quadrature components; wherein said local oscillator frequency of said local oscillator signal In-phase and Quadrature components changes relative to said carrier frequency of said input signal with which said local oscillator signal In-phase and Quadrature components are mixed a plurality of times during said reception time slots of each of said frames between first and second values one of which is greater and the other smaller than said carrier frequency; and selectively passing frequencies of said Intermediate Frequency signal In-phase and Quadrature components within a low Intermediate Frequency range and rejecting frequencies outside said low Intermediate Frequency range so as to produce filtered signal In-phase and Quadrature components.