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:
Oct. 18, 2016
Filed:
Nov. 04, 2014
Mediatek Singapore Pte. Ltd., Singapore, SG;
Neric Fong, Santa Clara, CA (US);
Bing Xu, Gilbert, AZ (US);
Wei-Cheng Liu, Taoyuan County, TW;
Terry W Chen, Saratoga, CA (US);
MediaTek Singapore Pte. Ltd., Singapore, SG;
Abstract
A gain asymmetry characterizing circuit for determining characteristics of gain asymmetry possessed by a transmitter includes a baseband loopback path, a test signal generating unit and a gain asymmetry measuring unit. The baseband loopback path is coupled to a baseband node on a first transmission path of the transmitter. The test signal generating unit is arranged to generate a first differential baseband test signal pair to the first transmission path. The first differential baseband test signal pair includes a first baseband signal and a second baseband signal. During a first period, the first baseband signal and the second baseband signal are fed into a positive input node and a negative input node of the first transmission path, respectively. During a second period, the second baseband signal and the first baseband signal are fed into the positive input node and the negative input node of the first transmission path, respectively.