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:
Dec. 15, 2020
Filed:
Nov. 26, 2018
Qorvo Us, Inc., Greensboro, NC (US);
Qorvo US, Inc., Greensboro, NC (US);
Abstract
An envelope tracking (ET) voltage tracker circuit is provided. The ET voltage tracker circuit is configured to generate a time-variant voltage based on a time-variant target voltage, which further corresponds to a time-variant power envelope of a radio frequency (RF) signal. The time-variant voltage may be provided to an amplifier circuit(s) for amplifying the RF signal. The ET voltage tracker circuit includes a target voltage processing circuit configured to pre-process the time-variant target voltage. More specifically, the target voltage processing circuit is configured to pre-process the time-variant target voltage based on a high-order transfer function when the time-variant target voltage corresponds to a higher modulation bandwidth (e.g., >80 MHz). As a result, it may be possible to improve temporal alignment between the time-variant voltage and the time-variant target voltage at the amplifier circuit(s), thus allowing the amplifier circuit(s) to operate with improved efficiency and linearity.