Amplifier with variable impedance transformation and method...

Details Amplifier with variable impedance transformation and method... Amplifier with variable impedance transformation and method...

2006-09-01

2008-12-09

Choe, Henry K (Department: 2817)

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

C330S129000

Reexamination Certificate

active

07463092

ABSTRACT:
A radio frequency (RF) amplifier includes an RF drive adjust circuit adapted to receive an input signal and adjust at least one of the amplitude and phase thereof to output a drive-adjusted input signal; a gain element adapted to amplify the drive-adjusted input signal and to output an amplified signal; and a dynamic impedance transformer adapted to receive the amplified signal, to output an output signal, and to transform a load impedance presented to the gain element by a load in accordance with a desired amplitude of an envelope of the output signal.

REFERENCES:
patent: 6097252 (2000-08-01), Sigmon et al.
patent: 7102429 (2006-09-01), Stengel et al.

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