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. 24, 2011
Filed:
Jun. 29, 2007
Joonbae Park, Seoul, KR;
Kyeongho Lee, Seoul, KR;
Sang Hun Jung, Seoul, KR;
Eal Wan Lee, San Jose, CA (US);
IN Ho Song, Seoul, KR;
Joonbae Park, Seoul, KR;
Kyeongho Lee, Seoul, KR;
Sang Hun Jung, Seoul, KR;
Eal Wan Lee, San Jose, CA (US);
In Ho Song, Seoul, KR;
GCT Semiconductor, Inc., San Jose, CA (US);
Abstract
The application discloses embodiments of methods and/or systems for compensating a transmission carrier leakage of an up-conversion mixer, a tranceiving circuit or apparatus embodying the same. One embodiment of a method can include detecting an I channel DC offset DCIand a Q channel DC offset DCQgenerated by a reception carrier leakage from an output of a down-conversion mixer, detecting an I channel DC offset DCI and a Q channel DC offset DCQ from the output of the down-conversion mixer while varying a compensation parameter being inputted to an up-conversion mixer that has its output coupled to an input of the down-conversion mixer to determine the compensation parameter that can reduce or minimize a transmission carrier leakage. A combination of a transmission baseband signal and the determined compensation parameter can be transmitted using the up-conversion mixer and an antenna to compensate for the transmission carrier leakage.