Class-E outphasing power amplifier with efficiency and output power enhancement circuits and method

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United States of America Patent

PATENT NO 9806673
SERIAL NO

15165339

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Abstract

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An outphasing amplifier includes a first class-E power amplifier (16-1) having an output coupled to a first conductor (31-1) and an input receiving a first RF drive signal (S1(t)). A first reactive element (CA-1) is coupled between the first conductor and a second conductor (30-1). A second reactive element (LA-1) is coupled between the second conductor and a third conductor (32-1). A second class-E power amplifier (17-1) includes an output coupled to a fourth conductor (31-2) and an input coupled to a second RF drive signal (S2(t)), a third reactive element (CA-3) 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 (LEEC-1) is coupled between the first and fourth conductors to improve power efficiency at back-off power levels. Power enhancement circuits (20-1,2) are coupled to the first and fourth conductors, respectively.

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Patent Owner(s)

  • TEXAS INSTRUMENTS INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Banerjee, Aritra Dallas, US 11 32
Ding, Lei Plano, US 124 1270
Haroun, Baher Allen, US 115 2410
Hezar, Rahmi Allen, US 51 382
Hur, Joonhoi San Diego, US 76 238
Schemm, Nathan Richard Rowlett, US 14 29

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