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:
Dec. 27, 2016
Filed:
Dec. 16, 2014
Freescale Semiconductor, Inc., Austin, TX (US);
Jeffrey A. Frei, Hawthorn Woods, IL (US);
Enver Krvavac, Lake Zurich, IL (US);
Hussain H. Ladhani, Chandler, AZ (US);
NXP USA, INC., Austin, TX (US);
Abstract
An embodiment of a packaged radio frequency (RF) amplifier device includes a transistor and an inverse class-F circuit configured to harmonically terminate the device. The transistor has a control terminal and first and second current carrying terminals. The control terminal is coupled to an input lead of the device, and the first current carrying terminal is coupled to a voltage reference. The inverse class-F circuit is coupled between the second current carrying terminal and an output lead. The inverse class-F circuit includes a shunt circuit coupled between a cold point node and the voltage reference, where the cold point node corresponds to a second harmonic frequency cold point for the device. The shunt circuit adds a shunt negative susceptance at a fundamental frequency Fto the inverse class-F circuit.