Digital programmable attenuator

Details Digital programmable attenuator Digital programmable attenuator

1982-01-29

1984-03-20

Gensler, Paul L.

Wave transmission lines and networks

Attenuators

333164, 333246, H01P 122

Patent

active

044384157

ABSTRACT:
A digitally programmable attenuator for high speed and a large dynamic range is constructed with a phase-controlled attenuator for small steps of attenuation and an attenuator of switched resistive pads for larger steps. The attenuators are connected in tandem and actuated combinatorially with the phase-controlled attenuator being switched into operation for the small steps, and the resistive pads being switched into operation for the large steps. A phase-controlled attenuator is constructed to permit adjustment of the attenuator characteristic, and a switched-pad attenuator is constructed to be phase shiftless.

REFERENCES:
patent: 3346823 (1967-10-01), Maurer et al.
patent: 3496492 (1970-02-01), Kurzl et al.
patent: 4121183 (1978-10-01), Murphy
patent: 4138637 (1979-02-01), Weinert
patent: 4288763 (1981-09-01), Hopfer
Rathai, W., Banerjee, S. K., "Precision Programmable Attenuator", News from Rohde and Schwarz, vol. 12, (1972), pp. 26-28.

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