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:
Oct. 17, 2023
Filed:
Sep. 15, 2022
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Sang Hyun Woo, Austin, TX (US);
Florian Mrugalla, Munich, DE;
Assignee:
Apple Inc., Cupertino, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/18 (2006.01); H03F 1/18 (2006.01); H03F 3/24 (2006.01); H04B 1/40 (2015.01);
U.S. Cl.
CPC ...
H04B 1/18 (2013.01); H03F 1/18 (2013.01); H03F 3/24 (2013.01); H04B 1/40 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01);
Abstract
An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The transceiver may include a mixer that outputs signals to a transimpedance amplifier. The mixer has an output impedance that varies depending on the frequency of operation. An adjustable resistance can be coupled to the input of the transimpedance amplifier. A control circuit can tune the adjustable resistance to compensate for changes in the output impedance of the mixer as the transceiver operates across a wide range of frequencies.