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:
Jun. 20, 2017
Filed:
Mar. 12, 2013
Mediatek Inc., Hsin-Chu, TW;
Kuo-Hao Chen, Hsinchu, TW;
Chun-Hao Liao, Taichung, TW;
Pei-Shiun Chung, New Taipei, TW;
Hsin-Hung Chen, Zhubei, TW;
MEDIATEK INC., Hsin-Chu, TW;
Abstract
A method for compensating the frequency dependent phase imbalance in a receiver is provided. The receiver downconverts an input signal to generate the signal r(t). The signal r(t) has an in-phase component r(t) and a quadrature component r(t). A first test signal with a first carrier frequency is applied as the input signal of the receiver to obtain a first phase imbalance I. A second test signal with a second carrier frequency is applying as the input signal of the receiver to obtain a second phase imbalance. An IQ delay mismatch Δt of the receiver according to the difference of the second and the first phase imbalances and the difference of the second and the first carrier frequencies is obtained. The in-phase component r(t) and the quadrature component r(t) of the signal r(t) corresponding to other input signal is compensated according to the obtained IQ delay mismatch Δt.