Dynamic amplitude tilt equalizer

Details Dynamic amplitude tilt equalizer Dynamic amplitude tilt equalizer

2006-05-09

2006-05-09

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Equalizers

C375S296000, C330S149000

Reexamination Certificate

active

07042936

ABSTRACT:
A system for equalizing amplitude tilt distortion in a signal includes an amplitude tilt maker and an amplitude tilt sensor. The input signal is split in the amplitude tilt maker between a signal through path and a phase shifted, time delayed signal path. The phase shifted, time delayed signal then passes through a voltage controlled attenuator. Combining the phase shifted, time delayed signal with the signal that travels along the signal through path provides the amplitude tilt. The tilt can be adjusted by changing the control voltage to the attenuator in order to compensate for amplitude tilt distortion in the input signal. The voltage controlled attenuator is controlled by the amplitude tilt sensor, which “senses” the tilt using a loop signal from the amplitude tilt maker.

REFERENCES:
patent: 4258340 (1981-03-01), Ryu
patent: 4329655 (1982-05-01), Nojima et al.
patent: 4565980 (1986-01-01), Ashida
patent: 4870658 (1989-09-01), Suzuki et al.
patent: 5877653 (1999-03-01), Kim et al.
patent: 6538509 (2003-03-01), Ren

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