Power supply voltage forming device and polar modulation...

Details Power supply voltage forming device and polar modulation... Power supply voltage forming device and polar modulation...

2011-06-07

2011-06-07

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

With compensation

C327S361000, C375S296000

Reexamination Certificate

active

07956667

ABSTRACT:
Provided is a power voltage forming device which can correct an offset voltage of a high-frequency power amplifier without degrading distortion characteristic of a high-frequency power amplifier. The power voltage forming device (100) includes: a level adjusting unit (103) which adjusts the level of input data subjected to analog conversion, according to an output level control value for controlling the output level of the high-frequency power amplifier (200); an analog adder (104) which performs analog addition of the offset data subjected to the analog conversion, to the signal after the level adjustment; a digital adder (101) which performs digital addition of the offset data to the input data before the analog conversion; and a selection unit (106) which selects whether to perform addition by the analog adder (104) or addition by the digital adder (101) according to the output level control value.

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International Search Report dated Apr. 8, 2008.

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