Surface acoustic wave filter

Details Surface acoustic wave filter Surface acoustic wave filter

2007-09-18

2007-09-18

Summons, Barbara (Department: 2817)

Wave transmission lines and networks

Coupling networks

Electromechanical filter

C333S196000, C310S31300R

Reexamination Certificate

active

11619243

ABSTRACT:
A transversal surface acoustic wave filter includes an input-side interdigital electrode, an output-side interdigital electrode, and a shield electrode, which are provided on a surface wave substrate. The distance between an excitation point of the input-side interdigital electrode, which is closest to the shield electrode, and an intermediate point between the shield electrode-side end of the input-side interdigital electrode and the input-side interdigital electrode-side end of the shield electrode is in the range of about 0.8λ to about 0.975λ, wherein λ is the wavelength of a surface wave.

REFERENCES:
patent: 4206380 (1980-06-01), Hazama et al.
patent: 55-080911 (1980-06-01), None
patent: 56-46333 (1981-04-01), None
patent: 59-034712 (1984-02-01), None
patent: 62-199110 (1987-09-01), None
patent: 2-44168 (1990-10-01), None
patent: 07-122962 (1995-05-01), None
patent: 07-162260 (1995-06-01), None
patent: 08-316773 (1996-11-01), None
patent: 2001-044791 (2001-02-01), None
International Search Report for PCT Application No. PCT/JP2005/011826; mailed Oct. 25, 2005.

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