Flexible wave guide and method for making same

Details Flexible wave guide and method for making same Flexible wave guide and method for making same

1974-02-11

1976-02-24

Smith, Alfred E.

Wave transmission lines and networks

Miscellaneous

Multipactor applications

138121, 138173, H01P 314, F16L 1114, F16L 906

Patent

active

039407187

ABSTRACT:
A flexible multilayer wave guide and method of making the same is disclosed. The wave guide comprises a flexible section for propagating microwaves and a pair of coupling elements for connection to existing microwave units. The flexible section is corrugated and has an outer layer made of a flexible and strong metal. Its inner surface comprises a relatively thin layer of a highly conductive metal which is supported by the outer layer and gives the wave guide the desired electrical properties.
A method of fabrication involving the deposition of the inner conductive layer and the outer support layer of the wave guide on an arbor is also disclosed. This technique allows the fabrication of a wave guide with a far greater number of convolutions along its length than was possible using prior art mechanical manufacturing methods. In the preferred embodiment, the arbor is made of metal, and the inner layer and outer layer are successively deposited on the arbor by electrodeposition. After the electrodeposition process has been completed, the plated arbor is then put in a chemical bath which dissolves the arbor, leaving the flexible section. The flexible section is then machined and welded or soldered to suitable coupling flanges.

REFERENCES:
patent: 3090019 (1963-05-01), Johnson et al.
patent: 3822412 (1974-07-01), Carlin et al.
Doughty, D. J., "Waveguide Components--A Survey Of Methods Of Manufacture & Inspection," components -- Brit. IRE, 2-1961, pp. 169, 171-173, 181.

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