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:
Jan. 09, 2018
Filed:
Feb. 01, 2017
Qualcomm Incorporated, San Diego, CA (US);
Ziv Golan, Rehovot, IL;
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Certain aspects relate to methods and apparatus for calibrating transmit error vector magnitude (EVM) using an over-the-air loopback mechanism. An apparatus includes a first radio frequency (RF) module configured to generate first RF signals based on first intermediate frequency (IF) signals and to output the first RF signals via at least a first antenna element, a second RF module configured to process the first RF signals, as obtained via a second antenna element, and to generate second IF signals, and a baseband module configured to determine a transmit performance metric for the first RF module based on the first IF signals and the second IF signals, determine a first transmit power level based on the determined transmit performance metric, and cause the first RF module to output second RF via the first antenna element at the first transmit power level.