Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1987-10-01
1988-11-15
Gensler, Paul
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
330284, 375 12, 379398, H03H 1106
Patent
active
047852658
ABSTRACT:
A line build out comprises a control voltage mechanism for applying a control voltage to a tuning diode or varactor. The control voltage is generated so as to be indicative of the length of a cable over which the signal has traveled. The capacitance of the tuning diode or varactor is changed according to the control voltage. A resistor is connected to the cathode of the tuning diode or varactor and a capacitor is connected to the anode of the tuning diode or varactor. A signal can be measured at the cathode which corresponds to the incoming signal and has been attenuated by frequency roll-off in accordance with the length of the cable over which the signal has traveled. In this way, attenuation for signals over cables of various length can be equalized in a manner which not only takes into account the length of the cable, but also the frequency of the signal.
REFERENCES:
patent: 2557888 (1951-06-01), Olson
patent: 2902548 (1959-09-01), Moeller
patent: 3568100 (1971-03-01), Tarbox
patent: 3578914 (1971-05-01), Simonelli
patent: 3671886 (1972-06-01), Fudemoto et al.
patent: 3904992 (1975-09-01), Iwakami
patent: 4393513 (1983-07-01), Yokogawa et al.
Molnar Ramon
Poirier Denis M.
Edwards Robert J.
Gensler Paul
Matas Vytas R.
The Babcock & Wilcox Company
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