Wave transmission lines and networks – Coupling networks – Equalizers
Patent
1993-01-21
1994-08-09
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Equalizers
375 11, H03H 1106
Patent
active
053370252
ABSTRACT:
An adaptive equalization circuit which has first path that includes a boost stage and a first variable gain stage and a second path that includes a second variable gain stage. The first path generates a fully equalized signal in response to an input signal while the second path generates an unequalized signal in response to the input signal. A summing stage combines the fully equalized signal and the unequalized signal to produce an equalized output signal. A first control line limits the gain of the first variable gain stage while a second control line limits the gain of the second variable gain stage so that when the maximum length of transmission line is utilized, the equalized output signal is formed substantially by the fully equalized signal, when a minimum length of transmission line is utilized, the equalized output signal is formed substantially by the unequalized signal, and when an intermediate length of transmission line is utilized, the equalized output signal is formed from a portion of both the fully equalized signal and the unequalized. signal.
REFERENCES:
patent: 3336540 (1967-08-01), Kwartiroff et al.
patent: 3728649 (1973-04-01), Waldhauer
Gensler Paul
National Semiconductor Corporation
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