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. 03, 2016
Filed:
Nov. 14, 2011
Shirook M. Ali, Waterloo, CA;
Michael Eoin Buckley, Rolling Meadows, IL (US);
James P. Warden, Irving, TX (US);
John B. Deforge, Ottawa, CA;
Shirook M. Ali, Waterloo, CA;
Michael Eoin Buckley, Rolling Meadows, IL (US);
James P. Warden, Irving, TX (US);
John B. Deforge, Ottawa, CA;
BlackBerry Limited, Waterloo, Ontario, CA;
Abstract
Devices and methods are disclosed for real-time calibration of a tunable matching network that matches the dynamic impedance of an antenna in a receiver. Processing logic is operable to solve multiple non-linear equations to determine the reflection coefficient of the antenna. The tunable matching network is repeatedly perturbed and the power received by the antenna is measured after each perturbation at the same node in the matching network. The measured power values are used by an optimizer in converging to a solution that provides the reflection coefficient of the antenna. The reflection coefficient of the antenna may be used to determine the input impedance of the antenna. The elements of the matching circuit may then be adjusted to match the input impedance of the antenna.