Variable delay line

Details Variable delay line Variable delay line

1984-01-25

1985-10-08

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including a lumped parameter

333140, 333156, 333162, H01P 900, H03H 732, H03H 734

Patent

active

045463328

ABSTRACT:
A variable delay line is disclosed which comprises an electromagnetic delay line formed of an inductance element and capacitors, a conductive plate disposed along the electromagnetic delay line and opposed thereto, and a movable contact adapted to move along the delay line while remaining in continuous contact with the conductive plate and the inductance element. The variable delay line has its delay characteristics improved by bending the aforementioned conductive plate in such a manner that it is separated from the delay line along the contact parts exposed to contact with the movable contact and, as a result, the stray capacitance formed between the delay line and the conductive plate is kept down to a negligibly small level.

REFERENCES:
patent: 920925 (1909-05-01), Darlington
patent: 1460239 (1923-06-01), Gehrig
patent: 2463105 (1949-03-01), Henniker
patent: 3740673 (1973-06-01), Bernstein

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