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:
Apr. 29, 2014
Filed:
May. 27, 2010
Lior Kravitz, Kfar Bilu, IL;
Lior Kravitz, Kfar Bilu, IL;
Intel Corporation, Santa Clara, CA (US);
Abstract
Calibration of quadrature imbalance in direct conversion transceivers is contemplated. A transceiver controller may perform a self-calibration to address quadrature imbalance. The controller may couple the radio frequency (RF) section of the transmitter to the RF section of the receiver via a loopback path and transfer a wideband signal into the transmitter. In the loopback path, the controller may phase-shift the wideband signal that propagates through the transmitter using two different phase angles to produce two different signals that propagate into the receiver. By measuring the transmitter and receiver signals, and performing a Fast Fourier Transform calculation, the controller may be able to calculate correction coefficients, or parameters, which may be used to adjust elements that address or correct the quadrature imbalance for both the transmitter and receiver.