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. 04, 2022
Filed:
Jun. 08, 2016
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Andreas Langer, Unterschleissheim, DE;
Christoph Hepp, Neubiberg, DE;
Assignee:
Apple Inc., Cupertino, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/20 (2006.01); H03F 3/19 (2006.01); H03F 3/24 (2006.01); H03F 1/02 (2006.01); H03G 3/30 (2006.01); H04B 1/04 (2006.01);
U.S. Cl.
CPC ...
H03F 3/19 (2013.01); H03F 1/0216 (2013.01); H03F 1/0222 (2013.01); H03F 3/245 (2013.01); H03G 3/3042 (2013.01); H03F 2200/105 (2013.01); H03F 2200/336 (2013.01); H03F 2200/36 (2013.01); H03F 2200/451 (2013.01); H03G 2201/302 (2013.01); H03G 2201/307 (2013.01); H04B 1/04 (2013.01);
Abstract
A circuit for generating a radio frequency signal is provided. The circuit includes an amplifier configured to generate a radio frequency signal based on a baseband signal. Further, the circuit includes a power supply configured to generate a variable supply voltage based on a control signal indicating a desired supply voltage, and to supply the variable supply voltage to the amplifier. The circuit further includes an envelope tracking circuit configured to generate the control signal based on a bandwidth of the baseband signal, and to supply the control signal to the power supply.