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:
May. 04, 2010
Filed:
Dec. 28, 2006
Kwo-jyr Wong, Taipei Hsien, TW;
Jane-yi Pieh, Taipei Hsien, TW;
Kwo-Jyr Wong, Taipei Hsien, TW;
Jane-Yi Pieh, Taipei Hsien, TW;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A circuit for canceling a direct current (DC) offset in a communication system includes a digital-to-analog (D/A) converter assembly (), a summing circuit (), an inphase-to-quadrature (I/Q) modulator (), a detecting module (), and a microcontroller (). The D/A converter assembly converts digital DC offset regulation signals to analog DC offset regulation signals. The summing circuit sums up the DC offset regulation signals and corresponding vectors of a received base band signal. The I/Q modulator converts the summed base band signal to a radio frequency (RF) signal. The detecting module detects an energy variation due to DC offset contained in the radio frequency (RF) signal. The microcontroller regulates the DC offset regulation signals output from the D/A converter assembly to minimize the energy variation detected by the detecting module. In the invention, the circuit saves energy and enhances qualities of communication signals.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile