Saw resonator filter with a multistrip coupler disposed in the r

Details Saw resonator filter with a multistrip coupler disposed in the r Saw resonator filter with a multistrip coupler disposed in the r

1992-10-19

1994-11-08

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

310313B, 310313D, H03H 964

Patent

active

053630734

ABSTRACT:
A SAW filter structure (300) includes two SAW resonators being symmetrically positioned along parallel tracks. The resonators include centrally positioned resonator gaps (368, 378) which are opposingly positioned. A multistrip coupler (330) for acoustically coupling the resonators extends between the resonator gaps and includes a plurality of equally spaced strips (8812) which are spaced to permit omni-directional projection of acoustic waves from the opposing sides of the multi strip coupler.

REFERENCES:
patent: 4350963 (1982-09-01), Iwamoto et al.
patent: 4370633 (1983-01-01), Schofield
patent: 4427956 (1984-01-01), Murray et al.
patent: 4510471 (1985-04-01), Flinn et al.
patent: 4659955 (1987-04-01), Schofield
patent: 4731595 (1988-03-01), Wright

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