Crystal filter and method for fabrication

Details Crystal filter and method for fabrication Crystal filter and method for fabrication

1981-08-28

1984-02-21

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333192, 29 2535, H03H 9205, H03H 960

Patent

active

044333161

ABSTRACT:
A crystal filter structure and fabrication method therefor. The crystal filter is constructed as a thick film circuit on a ceramic substrate. The coupling capacitors are painted on the ceramic substrate as part of the thick film circuit. The capacitors are laser trimmed to precise tolerance in order to provide a crystal filter having precise characteristics.

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