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

H - Electricity

01

P

356/2

H01P 3/08 (2006.01) H05K 3/22 (2006.01)

Patent

CA 1157958

ABSTRACT OF THE DISCLOSURE 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.

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