Acoustic surface wave devices

Details Acoustic surface wave devices Acoustic surface wave devices

1976-09-10

1978-02-07

Smith, Alfred E.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

310313, 310366, H03H 904, H03H 926, H03H 932, H01L 4104

Patent

active

040729150

ABSTRACT:
An electrode structure within the cavity of an acoustic surface wave resonator, e.g. an interdigital transducer or a multistrip coupler, has two sections separated by an odd integral multiple of a quarter wavelength of the standing wave in the cavity and located with respect to the center of the cavity so that all the electrodes are midway between a node and an adjacent antinode of the standing wave. Distortion of the resonator response due to reflection by the electrodes of the transducer or coupler is suppressed by this arrangement.

REFERENCES:
patent: 3716809 (1973-02-01), Reeder et al.
patent: 3886504 (1975-05-01), Hartmann et al.
patent: 3961293 (1976-06-01), Hartmann et al.
patent: 3970970 (1976-07-01), Worley

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