High permeability rolled delay line of the coplanar type

Details High permeability rolled delay line of the coplanar type High permeability rolled delay line of the coplanar type

1985-07-31

1987-06-23

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333 23, H01P 900

Patent

active

046756272

ABSTRACT:
A time delay device for adjusting the arrival time of an electronic signal at a specific area in a circuit pattern is presented. The time delay device is comprised of a coplanar flexible circuit having a conductive pattern consisting of a signal line in a ground shield. The signal line is preferably serpentine and makes one or more passes back and forth on the dielectric surface of the flexible circuit. The ground plane covers substantially the entire surface of the laminate except for a small gap on either side of the signal line. This circuit laminate is then tightly rolled up and permanently packaged in a suitable sheath or by encapsulation. The delay of the delay line is substantially increased (without increasing the line length of the circuit) by utilizing a dielectric and/or adhesive having high permeability. The use of a high permeability dielectric and/or adhesive will minimize the size, cost and resistive losses of the time delay device.

REFERENCES:
patent: 2446652 (1948-04-01), Beverly
patent: 3670276 (1972-06-01), Storey, II
patent: 4313095 (1982-01-01), Jean-Frederick

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