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:
Apr. 28, 2020
Filed:
Jul. 30, 2018
Qorvo Us, Inc., Greensboro, NC (US);
Nadim Khlat, Cugnaux, FR;
Manbir Singh Nag, Oak Ridge, NC (US);
Qorvo US, Inc., Greensboro, NC (US);
Abstract
A low modulation bandwidth (LMB) envelope tracking (ET) circuit is provided. The LMB ET circuit is configured to generate an ET modulated voltage at an output node based on a modulated target voltage for amplifying an LMB radio frequency (RF) signal. More specifically, the LMB ET circuit includes an amplifier configured to generate a modulated amplifier voltage based on the modulated target voltage and an offset circuit configured to raise the modulated amplifier voltage by a modulated offset voltage at the output node. The offset circuit is configured to generate the modulated offset voltage based on a modulated target offset voltage that is proportional to the modulated target voltage. As a result, it may be possible to maintain the ET modulated voltage at a defined voltage level for a defined duration such that the LMB RF signal can be amplified to a defined power level.