Patent ID: 9048920
Filing Date: 2015-06-02
Classification: H03D,H04B

Abstract:
1. A radio receiver, comprising: an antenna for receiving a frequency modulated (FM) signal separated from other signals by a channel spacing; a radio frequency (RF) filter for filtering the FM signal into a filtered signal; a low noise amplifier (LNA) for amplifying the filtered signal into an amplified signal; a local oscillator for digitally generating a first LO injection signal and a second LO injection signal which are phase offset, the first and second LO injection signals also being frequency shifted based on the channel spacing; an analog quadrature mixer for generating low IF I/Q signals in response to the amplified signal being mixed with the frequency shifted LO injection signals; a first path for processing the low IF I signal through a low pass filter, an analog-to-digital converter and a digital filter to generate a low IF digital signal (I a second path for processing the low IF Q signal through a low pass filter, an analog-to-digital converter and a digital filter to generate a low IF digital signal (Q an adaptive frequency translator for adaptively frequency offsetting the low IF digital signal (I applying, to the low IF digital signal (I applying, to the low IF digital signal (Q