Adaptive control of RF power amplifier power supply voltage

Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Nonlinear amplifying circuit

Patent

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Details

327551, 330149, H03K 500, G06G 712

Patent

active

061078727

ABSTRACT:
The power supply voltage is adaptively controlled to increase the efficiency and minimize multi-tone intermodulation distortion of a power amplifier either as a function of amplifier overdrive and/or as a function of the frequency of the input waveform. If the input signal is single-tone, the supply voltage is adaptively changed to increase the efficiency of the amplifier as a function of the amount of amplifier overdrive and/or the frequency of the input waveform. If the input signal is multi-tone, the supply voltage is increased to its maximum to minimize intermodulation distortion.

REFERENCES:
patent: 5923215 (1999-07-01), Hans

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