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Ladder-type piezoelectric filters

  • US 4,398,162 A
  • Filed: 10/13/1981
  • Issued: 08/09/1983
  • Est. Priority Date: 10/22/1980
  • Status: Expired due to Term
First Claim
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1. A ladder-type piezoelectric filter comprising at least one series resonator, at least one parallel resonator, a plurality of connector elements each disposed on each side of each said resonator and having a small protrusion abutting against an oscillation node of each resonator, elastic insulator members each inserted between each said resonator and each said connector element in tight contact thereto and having an opening for passing the connector element protrusion, and an insulating housing for accommodating the foregoing components in a cascade arrangement.

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