The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2013
Filed:
Sep. 02, 2010
Shousheng He, Södra Sandby, SE;
Anders Berkeman, Lund, SE;
Shousheng He, Södra Sandby, SE;
Anders Berkeman, Lund, SE;
Cambridge Silicon Radio Limited, Cambridge, GB;
Abstract
A receiver () for extracting a desired signal component () from a received signal, which received signal contains the desired signal component () and may contain an interfering signal component (), wherein the receiver () comprises a first mixer () which generates an intermediate frequency signal containing a frequency-shifted version of the received signal and a frequency-shifted version of an image of the received signal, the receiver further comprising: a second mixer () for shifting the desired signal component () of the intermediate frequency signal such that it is centered on a baseband frequency, so as to generate a first composite signal containing the shifted desired signal component () and a shifted version of any interfering signal component () contained in the image of the received signal; a third mixer () for shifting an image of the desired signal such that it is centered on the baseband frequency, so as to generate a second composite signal containing the shifted image () of the desired signal component and a shifted version () of any interfering signal component contained in the received signal; an estimator () for estimating, from the first and second composite signals, a coefficient indicative of the amount of the interfering signal () component that is present with the desired signal component () in a selected one of the composite signals; a multiplier () for scaling the complex conjugate of the selected composite signal by the coefficient so estimated; and an adder () for subtracting the scaled signal output by the multiplier () from the other composite signal to obtain a scaled version of the desired signal component.