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:
Jul. 21, 2015
Filed:
Jun. 30, 2014
Skyworks Solutions, Inc., Woburn, MA (US);
Daniel Lee Kaczman, Newbury Park, CA (US);
James Phillip Young, Cedar Rapids, IA (US);
Skyworks Solutions, Inc., Woburn, MA (US);
Abstract
Apparatus and methods for reducing capacitive loading of an envelope tracker are disclosed. In one embodiment, a wireless device comprises an envelope tracker including an output configured to generate a power amplifier supply voltage, a plurality of power amplifiers, and a power supply network configured to provide the power amplifier supply voltage to the plurality of power amplifiers. The power amplifier supply network includes a first inductor electrically connected between a supply input of a first power amplifier and the output of the envelope tracker, and a second inductor electrically connected between a supply input of a second power amplifier and the output of the envelope tracker. The first inductor resonates with a distributed capacitance of the power supply network at a frequency greater than the envelope tracker's modulation bandwidth of, and the second inductor resonates with the distributed capacitance at a frequency greater than the envelope tracker's modulation bandwidth.