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:
Nov. 30, 2010
Filed:
Jun. 08, 2007
Kuo-hung Wu, Sinshih Township, Tainan County, TW;
Jun-nian Lin, Fongshan, TW;
Zhi-yu Zhuang, Taipei, TW;
Kuo-Hung Wu, Sinshih Township, Tainan County, TW;
Jun-Nian Lin, Fongshan, TW;
Zhi-Yu Zhuang, Taipei, TW;
Himax Analogic, Inc., Tainan County, TW;
Abstract
A power amplifier with noise shaping function is provided. The power amplifier includes a differential mode integrator, an integration and adjustment unit and a switch unit. The differential mode integrator is used for receiving a differential mode input signal and a differential mode output signal, and outputting a differential mode first signal. The integration and adjustment unit is coupled to the differential mode integrator for receiving the first signal and an output signal and outputting a single-end mode second signal. The switch unit is used for receiving the second signal and outputting the differential mode output signal to drive the load. The present invention uses a common mode input signal instead of the single-end input signal to eliminate the common mode noise, and uses a 2-order (or more than that) integrating circuit instead of the conventional filter to achieve a preferred effect of reducing the off band noise.