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:
Nov. 12, 2024
Filed:
Sep. 07, 2022
Apple Inc., Cupertino, CA (US);
Christof Pfannenmüller, Erlangen, DE;
Dominic Koehler, Viereth-Trunstadt, DE;
Julian W Zuber, Erlangen, DE;
Oliver Georg Dorn, Erlangen, DE;
Bjoern Lenhart, Nuremberg, DE;
Harald Pretl, Schwertberg, AT;
Rastislav Vazny, Sunnyvale, CA (US);
Christian F Tanzer, Perlesreut, DE;
Apple Inc., Cupertino, CA (US);
Abstract
Systems and methods combine a test signal with a wanted (downlink or uplink) signal at an input of a duplexer of a communication device, and receive the test signal at an output of the duplexer. The test signal may include a radio frequency signal having less power than the wanted signal to avoid interference, or a digital signal that is added to or extracted from the wanted signal when the wanted signal does not have a radio frequency. A processor of the communication device causes the duplexer to operate in a tuning state (e.g., to transmit signals having a transmission frequency and receive signals having a receive frequency). The measurement system determines a difference or ratio in power between the test signal at the duplexer output and the duplexer input, and adjusts the tuning state based on the difference or ratio (e.g., to decrease or minimize the difference or ratio).