Power amplifier circuit and method using bandlimited signal...

Details Power amplifier circuit and method using bandlimited signal... Power amplifier circuit and method using bandlimited signal...

2005-01-04

2005-01-04

Choe, Henry (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S129000

Reexamination Certificate

active

06838931

ABSTRACT:
A power amplifier circuit for receiving a variable envelope input signal and for producing an amplified output signal is provided. The power amplifier circuit includes an envelope approximation circuit, an envelope amplifier circuit, a phasor approximation circuit, a quadrature modulation circuit, and a power amplifier. The envelope approximation circuit receives the variable envelope input signal and produces a bandlimited estimated envelope signal, corresponding to the amplitude of the variable envelope input signal. The bandlimited estimated envelope signal is then amplified by an envelope amplifier circuit. The amplified envelope signal is then coupled to the supply input of the power amplifier. The phasor approximation circuit receives the variable envelope input signal and produces a bandlimited estimated phasor signal. The quadrature modulation circuit receives the estimated phase signal and produces a modulated phase signal. The modulated phase signal is then coupled to the signal input of the power amplifier. The power amplifier then produces an amplified output signal.

REFERENCES:
patent: 5990735 (1999-11-01), Sigmon et al.
patent: 6175273 (2001-01-01), Sigmon et al.
patent: 6300826 (2001-10-01), Mathe et al.

Affiliated with

Also associated with

Rating

Power amplifier circuit and method using bandlimited signal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power amplifier circuit and method using bandlimited signal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power amplifier circuit and method using bandlimited signal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3418690