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:
May. 12, 2015
Filed:
Sep. 07, 2011
David E. Jones, Cedar Rapids, IA (US);
Terry J. Stockert, Cedar Rapids, IA (US);
William David Southcombe, San Diego, CA (US);
Chris Levesque, Fountain Valley, CA (US);
Scott Yoder, Holly Springs, NC (US);
David E. Jones, Cedar Rapids, IA (US);
Terry J. Stockert, Cedar Rapids, IA (US);
William David Southcombe, San Diego, CA (US);
Chris Levesque, Fountain Valley, CA (US);
Scott Yoder, Holly Springs, NC (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
Embodiments of the present disclosure relate to an overlay class F choke of a radio frequency (RF) power amplifier (PA) stage and an RF PA amplifying transistor of the RF PA stage. The overlay class F choke includes a pair of mutually coupled class F inductive elements, which are coupled in series between a PA envelope power supply and a collector of the RF PA amplifying transistor. In one embodiment of the RF PA stage, the RF PA stage receives and amplifies an RF stage input signal to provide an RF stage output signal using the RF PA amplifying transistor. The collector of the RF PA amplifying transistor provides the RF stage output signal. The PA envelope power supply provides an envelope power supply signal to the overlay class F choke. The envelope power supply signal provides power for amplification.