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. 17, 2016
Filed:
Apr. 11, 2012
Michael S. Labelle, Phoenix, AZ (US);
Shane Moore, Gilbert, AZ (US);
Jamel Benbrik, Broomfield, CO (US);
Michael B Thomas, Chandler, AZ (US);
Michael S. LaBelle, Phoenix, AZ (US);
Shane Moore, Gilbert, AZ (US);
Jamel Benbrik, Broomfield, CO (US);
Michael B Thomas, Chandler, AZ (US);
RF Micro Devices, Inc., Greensboro, NJ (US);
Abstract
An apparatus comprises at least one transmit amplifier and rectification circuitry located in the at least one transmit amplifier, which is configured to receive a RF signal and provide a rectified voltage, which is selectably added to a voltage supplied by a battery to generate a DC voltage supply signal that is a function of RF power level. A controller is configured to select between providing the VBAT or the VSupply signal to a transmit switch depending on one or more of a logic state and a mode of operation. An alternate apparatus comprises a charge pump circuit configured to quickly raise a voltage supplied to it and store the output voltage on a capacitor and then either shift a first frequency provided by a charge pump oscillator to a lower second frequency or turn off a charge pump clock to maintain a voltage on the capacitor during a transmit mode.