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:
Oct. 28, 2014
Filed:
May. 05, 2010
Alexander Wayne Hietala, Phoenix, AZ (US);
Jeffery Peter Ortiz, Chandler, AZ (US);
Timothy Keith Coffman, Chandler, AZ (US);
Alexander Wayne Hietala, Phoenix, AZ (US);
Jeffery Peter Ortiz, Chandler, AZ (US);
Timothy Keith Coffman, Chandler, AZ (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
A circuit and method for a saturation correction of a power amplifier (PA) is provided in order to maintain a desirable switching spectrum. The circuit includes a closed loop system that is responsive to a dynamic PA control signal known as V. The method samples a detector voltage that represents the output of the PA at the maximum voltage level of V. The sampled detector voltage is then reduced by a predetermined amount and applied as a fixed voltage PA control signal in the place of V. As a result, the closed loop system responds to the fixed voltage PA control signal to bring the PA out of saturation before Vcan begin a voltage decrease. Once the Vvoltage decreases, Vis reapplied as a dynamic PA control signal in place of the fixed voltage control signal.