Method of tuning apparatus by low power laser beam removal

Details Method of tuning apparatus by low power laser beam removal Method of tuning apparatus by low power laser beam removal

1979-10-15

1981-09-08

Smith, John D.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making electrical device

29593, 204 15, 219121LM, 333205, 427 531, 427 96, 427 99, 430319, H01P 308

Patent

active

042885302

ABSTRACT:
A thin film structure is provided with the capability of low-power laser tuning and trimming. Trim windows in a plated ground plane are incorporated to allow automated tuning procedures using relatively low-power lasers. The trim windows are conductive, but the heavier layer of plated copper is omitted from those areas, leaving only the titanium/evaporated copper/ gold layers. The method can also provide for areas of bare substrate if desired.

REFERENCES:
patent: 4081653 (1978-03-01), Koo et al.
patent: 4112147 (1978-09-01), Thompson
patent: 4131484 (1978-12-01), Caruso et al.
patent: 4157517 (1979-06-01), Kneisel et al.
Brauer, "Reproducible Methods for the Fabrication of Microwave Strip Lines . . . ", Solid State Technology, vol. 19, No. 12, pp. 67-73.

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