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.

Date of Patent:
Oct. 30, 2018

Filed:

Jun. 15, 2015
Applicant:

Mediatek Inc., Hsin-Chu, TW;

Inventor:

Chih-Hao Sun, New Taipei, TW;

Assignee:

MediaTek Inc., Hsin-Chu, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G 7/12 (2006.01); H03D 7/14 (2006.01); H04B 1/04 (2006.01); H03K 5/00 (2006.01); H03D 7/00 (2006.01);
U.S. Cl.
CPC ...
H03K 5/00006 (2013.01); H03D 7/00 (2013.01); H03D 2200/009 (2013.01);
Abstract

A signal processing circuit has a first mixer, a first amplifier, and a pulling effect mitigation circuit. The first mixer mixes a first input signal and a first oscillation signal to generate a first output signal, wherein the first oscillation signal is generated by dividing a frequency of a reference clock with a frequency dividing factor. The first amplifier amplifies the first output signal, and generates an amplified output signal at an output terminal of the first amplifier. The pulling effect mitigation circuit is coupled to the output terminal of the first amplifier, and generates a compensation signal to the output terminal for reducing at least an Nharmonic of the amplified output signal, wherein a value of N is equal to the frequency dividing factor.


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