Arrangement for reducing non-linear distortions in an output...

Details Arrangement for reducing non-linear distortions in an output... Arrangement for reducing non-linear distortions in an output...

2007-01-30

2007-01-30

Nguyen, Khanh Van (Department: 2817)

Amplifiers

With amplifier bypass means

C330S149000

Reexamination Certificate

active

10507849

ABSTRACT:
A system reduces non-linear distortions in an output signal of an amplifier stage that is configured according to the feed forward principle. An amplifier stage input signal arrives at a main branch of an amplifier. The output signal of the amplifier, which is distorted in a non-linear manner, arrives at an adder. An output of the adder forms the amplifier stage output signal. The output signal which is distorted in a non-linear manner and the amplifier stage input signal are fed to a secondary branch that comprises an error signal device. The error signal device generates an error signal from the delayed amplifier stage input signal and the output signal of the amplifier, which is distorted in a non-linear manner. The error signal is fed to the adder in order to reduce distortions in the amplifier stage output signal. The error signal device comprises at least one transmission device that is provided with a negative group delay time.

REFERENCES:
patent: 5986500 (1999-11-01), Park et al.
patent: 6259320 (2001-07-01), Valk et al.
patent: 0768752 (1997-04-01), None
Broomfield et al., “Broadband Negative Group Delay Networks for Compensation of Microwave Oscillators and Filters”, Electronics Letters, Nov. 9, 2000, vol. 36, No. 23, pp. 1931-1933.
Lucyszyn et al., “Negative Group Delay Synthesiser”, Electronics Letters, Apr. 29, 1993, vol. 29, No. 9, pp. 798-800.

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