Inverse Wiedemann effect torsional delay line matched filter dev

Details Inverse Wiedemann effect torsional delay line matched filter dev Inverse Wiedemann effect torsional delay line matched filter dev

1968-02-28

1977-04-12

Hubler, Malcolm F.

Wave transmission lines and networks

Coupling networks

With impedance matching

H03H 730

Patent

active

040178110

ABSTRACT:
A torsional mode, acoustic delay line is disposed over a strip of conduct, non-magnetic material having aligned teeth along its edges. A voltage source is impressed across the ends of the delay line to produce a quiescent concentric magnetic field thereabout. One or more code wires are interlaced through successive pairs of aligned slots between the teeth. The wire is encoded to act as a matched filter sense wire for a binary sequence by selection of the sense of circumferential direction in which the wire passes across the delay line at each pair of slots. The encoding wire is laced across the rear to the tooth-edge strip in order to allow it to be passed through each next successive pair of slots in the desired direction. These lacings on the rear side do not inductively couple with the delay line because of shielding by Eddy current effects produced by presence of a strip of conductor.

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