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. 12, 2026
Filed:
Dec. 07, 2023
Mediatek Inc., Hsinchu City, TW;
Chun-Hsiang Chen, Hsinchu City, TW;
Chin-Wei Hsu, Hsinchu City, TW;
PO-Chung Hsiao, Hsinchu City, TW;
Sin-Sheng Wong, Hsinchu City, TW;
Yen-Liang Chen, Hsinchu City, TW;
MEDIATEK INC., Hsinchu City, TW;
Abstract
A calibration method to find the impedance of a radio frequency front-end (RFFE) is provided. The RFFE includes a feedback end and a tuner. The tuner is set to a first predetermined setting to have a first impedance. An output end of the tuner is set to different calibration settings. The first reflection coefficient sets at the feedback end is obtained. The second impedance from the feedback end of the RFFE to an input end of the tuner is calculated based on the first reflection coefficient. The tuner is set to a second predetermined setting. The second reflection coefficient sets at the feedback end is obtained. The third impedance of the tuner in the second predetermined setting is calculated based on the second impedance from the feedback end of the RFFE to the input end of the tuner and the second reflection coefficient sets.