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:
Mar. 10, 2015
Filed:
Aug. 09, 2012
Applicant:
Shou-fang Chen, Hsinchu County, TW;
Inventor:
Shou-Fang Chen, Hsinchu County, TW;
Assignee:
MStar Semiconductor, Inc., Hsinchu Hsien, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 5/00 (2006.01);
U.S. Cl.
CPC ...
H04B 1/525 (2013.01);
Abstract
A transceiver for radio-frequency identification (RFID) is provided. The transceiver includes a transmitter, a receiver and a noise canceller. The transmitter transmits a carrier signal to an antenna. The receiver receives a wireless signal from the antenna. The noise canceller generates a feedback current according to a part of the carrier signal, and feeds the feedback current to an input of the receiver to cancel noises in the wireless signal. Further, the noise canceller adjusts the feedback current according to the signal strength of the noises in the wireless signal.