RF SIGNAL RECEIVER AND A METHOD FOR CALIBRATING RF PATH IN A SIGNAL RECEIVER
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Dec 3, 2014
filing date -
Dec 4, 2013
priority date (Note) -
Abandoned
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Abstract
An RE signal receiver comprising an RE signal input (110) connected, via an RE signal path comprising RF signal processing components (120), to an integrated circuit system (130) for converting the RE signal to an IF signal using a mixer (132) having one input connected to output of the RF signal path with the RE signal processing components (120) and the other input to a local oscillator (LO) signal generated by a synthesizer (135), and an IF signal processor (134), wherein the integrated circuit system (130) further comprises a calibration controller (137) and a signal level adjustment circuit, (136) configured to receive a reference signal from the synthesizer (135) and controllable by the calibration controller (137), wherein the output of the signal level adjustment circuit (136) is connected, as a reference RE signal, via a high impedance summing node (119) to the input of the RE signal path comprising RE signal processing components (120).
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