Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1980-05-13
1983-03-29
Gensler, Paul L.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
330 86, 330109, H03H 1106
Patent
active
043785352
ABSTRACT:
An automatically adjusted equalizer circuit includes an operational amplifier having a parallel resonant circuit, a voltage controlled resistor, and an amplifier output signal monitoring circuit in a feedback path for the adjustable equalizer. The presence of the parallel resonant circuit in the feedback path causes the amplifier gain to vary with frequency. An input signal to the operational amplifier will be distorted depending upon the particular loss characteristic of a telephone wire to which the input is connected. Automatic adjustment of the voltage controlled resistor, and the presence of the resonant circuit, causes the slope of the gain of the amplifier to inversely compensate for the loss characteristic of the particular line in question. Within the variety of lines, each line will have different loss characteristics as a function of length and gauge of the different telephone lines. This equalizer automatically provides a compensated output signal which is equalized for the particular loss characteristic of the line selected from such a variety of lines.
REFERENCES:
patent: 3904992 (1975-09-01), Iwakami
patent: 4061970 (1977-12-01), Magneron
patent: 4105945 (1978-08-01), Sano et al.
patent: 4122417 (1978-10-01), Takasaki et al.
Chiu Ran F.
Nizel David E.
Park Yoon B.
Gensler Paul L.
Racal-Milgo, Inc.
LandOfFree
Adaptive equalizer for short distance metallic circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive equalizer for short distance metallic circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive equalizer for short distance metallic circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1205455