Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1981-10-23
1983-12-13
Nussbaum, Marvin L.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
333196, H03H 964, H03H 970
Patent
active
044207301
ABSTRACT:
A surface acoustic wave filter which comprises: a substrate of piezoelectric material; a multistrip coupler for changing the track of a signal comprising a plurality of parallel conductive strips; at least two transducers disposed on one side of the multistrip coupler; at least another two transducers disposed on the other side of the multistrip coupler. The latter two transducers facing the former two transducers. One pair of the transducers which face each other through the multistrip coupler constitutes input transducers while the other pair of the transducers constitutes output transducers.
REFERENCES:
patent: 4254387 (1981-03-01), Redwood et al.
Kojima Yuji
Ono Masaaki
Wakatsuki Noboru
Fujitsu Limited
Nussbaum Marvin L.
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