Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1975-02-03
1976-06-01
Smith, Alfred E.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
310 82, 310 98, H03H 902, H03H 920, H03H 926, H03H 932
Patent
active
039612937
ABSTRACT:
A surface wave device having a periodic frequency response characteristic is disclosed. At least two reflective grating structures are located at the surface of the surface wave device such that acoustic surface wave standing wave resonance can occur in the region between the two reflector structures. The spacing between the reflector structures is sufficiently large to insure that standing wave resonance can occur at any of a plurality of discrete resonance frequencies, all falling within the bandwidth of the grating reflectors themselves.
REFERENCES:
patent: 3716809 (1973-02-01), Reeder et al.
patent: 3781717 (1973-12-01), Kuenemund
patent: 3882430 (1975-05-01), Maerfeld
patent: 3886504 (1975-05-01), Hartmann et al.
Hartmann Clinton S.
Schoenwald Jeffrey Stuart
Comfort James T.
Hiller William E.
Levine Harold
Nussbaum Marvin
Smith Alfred E.
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