Method of forming a helical waveguide using a deposit screen

Details Method of forming a helical waveguide using a deposit screen Method of forming a helical waveguide using a deposit screen

1989-03-17

1991-07-09

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 102

Patent

active

050303295

ABSTRACT:
A method for forming a helical waveguide uses a deposit screen such as tape to prevent the deposit of unwanted material between the turns of the helix. The waveguide is formed by electroplating of nickel on a mandrel. The mandrel has raised portions similar to a screw on which the waveguide is formed. The deposit screen is placed in the recessed areas between the raised areas on the mandrel to prevent the mandrel from being plated in these areas. This prevents the turns of the helix from touching each other. The resultant helix is easily removed without damage to the waveguide or mandrel.

REFERENCES:
patent: 4194808 (1980-03-01), Marhic et al.

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