Attenuation equalizer for correcting a temperature and frequency

Details Attenuation equalizer for correcting a temperature and frequency Attenuation equalizer for correcting a temperature and frequency

1978-06-12

1980-06-17

Gensler, Paul L.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

178 63E, 333 28R, H03H 716

Patent

active

042086400

ABSTRACT:
Attenuation equalizer for correcting within a frequency range the temperature and frequency-depending attenuation variation of cables, comprising a cascade arrangement of a fixed and a variable attenuation correction circuit, connected to a control circuit, the variable attenuation correction circuit comprising a bridge-T network having a series arrangement, of two identical series resistors bridged by a variable bridging impedance and a parallel impedance connected between these two series resistors, the fixed attenuation correction circuit having a lower attenuation for higher frequencies than for lower frequencies, the temperature dependency of the cable being eliminated in the variable attenuation correction circuit and the frequency dependence being eliminated mainly in the fixed attenuation correction circuit for which purpose the variable attenuation correction circuit comprises only two adjustable components.

REFERENCES:
patent: 2777994 (1957-01-01), Hurault
patent: 3441879 (1969-04-01), Tomcavage
patent: 3569869 (1971-03-01), Sutton, Jr. et al.
patent: 3854659 (1974-12-01), Bucherl et al.

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