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. 24, 2012
Filed:
Jan. 04, 2010
Shen Feng, San Diego, CA (US);
Shen Feng, San Diego, CA (US);
Montage Technology (Shanghai) Co., Ltd., Shanghai, CN;
Abstract
A signal processing method and system are provided. The method includes receiving an input signal within a first frequency range, the input signal including a desired signal and an interference signal. The method includes down-converting the input signal to a second frequency range, which is lower than the first frequency range, using an offset local oscillator signal having a frequency substantially equal to the central frequency of the desired signal. The method includes separating the interference signal from the down-converted input signal. The method includes up-converting the separated interference signal to the first frequency range. The method includes subtracting the up-converted interference signal from the input signal at the first frequency range to obtain an interference removed signal. The method includes down-converting the interference removed signal to a third frequency range, which is lower than the first frequency range, using a local oscillator signal, for demodulating. The frequency of the offset local oscillator signal is different from the frequency of the local oscillator signal.