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:
Sep. 15, 2020
Filed:
Jan. 04, 2018
Apple Inc., Cupertino, CA (US);
Wassim El-Hassan, San Jose, CA (US);
Mohammad Reza Ghajar, Santa Clara, CA (US);
Gurusubrahmaniyan Subrahmaniyan Radhakrishnan, San Jose, CA (US);
Vineet Nayak, Sunnyvale, CA (US);
Srinivasa Yasasvy Sateesh Bhamidipati, Milpitas, CA (US);
Apple, Inc., Cupertino, CA (US);
Abstract
The representative embodiments discussed in the present disclosure relate to techniques in which the operating characteristics (e.g., gain and/or efficiency) of a power amplifier in a transmitter may be regulated according to an operation mode of the transmitter. More specifically, in some embodiments, different look-up tables (LUTs) may be employed for each mode of operation to suitably adjust the supply voltage to the power amplifier and modulate its operating characteristics based on power input to the power amplifier. Further, in some embodiments, a method to calibrate a LUT for uplink carrier aggregation (ULCA) operation mode of the transmitter may be employed to populate a LUT used to suitably adjust the supply voltage during ULCA.