Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

1979-03-07

1981-03-10

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333109, 333196, H03H 964, H01L 4118

Patent

active

042557267

ABSTRACT:
A surface acoustic wave filter having transmitting and receiving transducers, coupling transducers, as well as reflecting transducers which are arrayed on a piezo-electric substrate. The coupling transducers are so designed as to function as 3-dB directional couplers in order to obtain frequency characteristics over a wide range without developing ripples.

REFERENCES:
patent: 3886504 (1975-05-01), Hartmann et al.
Marshall et al., "Theory and Design of the Surface Acoustic Wave Multistrip Coupler," in IEEE Trans. on Sonics and Ultrasonics, vol. SU-20, No. 2, Apr. 1973, pp. 124-133.

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