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. 31, 2017
Filed:
May. 26, 2016
Texas Instruments Incorporated, Dallas, TX (US);
Aritra Banerjee, Dallas, TX (US);
Joonhoi Hur, San Diego, CA (US);
Baher Haroun, Allen, TX (US);
Nathan Richard Schemm, Rowlett, TX (US);
Rahmi Hezar, Allen, TX (US);
Lei Ding, Plano, TX (US);
TEXAS INSTRUMENT INCORPORATED, Dallas, TX (US);
Abstract
An outphasing amplifier includes a first class-E power amplifier (-) having an output coupled to a first conductor (-) and an input receiving a first RF drive signal (S(t)). A first reactive element (C-) is coupled between the first conductor and a second conductor (-). A second reactive element (L-) is coupled between the second conductor and a third conductor (-). A second class-E power amplifier (-) includes an output coupled to a fourth conductor (-) and an input coupled to a second RF drive signal (S(t)), a third reactive element (C-) coupled between the second and fourth conductors. Outputs of the first and second power amplifiers are combined by the first, second and third reactive elements to produce an output current in a load (R). An efficiency enhancement circuit (L-) is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits (-) are coupled to the first and fourth conductors, respectively.