Surface acoustic wave resonator

Details Surface acoustic wave resonator Surface acoustic wave resonator

1986-03-26

1988-03-29

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333154, 333194, 310313R, H03H 964, H03H 925

Patent

active

047346647

ABSTRACT:
In order to realize an SAW filter withstanding high power, a plurality of single open-ended surface acoustic wave resonators are connected in series, and an earth conductor is disposed at least on a part of rear face of a piezoelectric substrate constituting the surface acoustic wave resonators. And static capacities formed between said earth conductor and electrode conductors on the piezoelectric substrate constituting the surface acoustic wave resonators are utilized as constituents of the filter circuit. In the above described structure, a part of input power is not converted into acoustic energy, but directly transmitted to the output side. Since the mechanical stress imposed upon the electrode material and the piezoelectric substrate is thus lightened, the SAW filter can withstand a large power signal.

REFERENCES:
patent: 4126837 (1978-11-01), Koyamada et al.
patent: 4166258 (1979-08-01), Tseng
patent: 4405874 (1983-09-01), Suthers
patent: 4423395 (1983-12-01), Shirahama
patent: 4625184 (1986-11-01), Niitsuma et al.
Yamaguchi et al.-"Design of Surface Acoustic-Wave-Filters by Taking Account of Electrical Terminations and Matching Circuits", Electronic Letters, vol. 12, No. 8, 15 Apr. 1976; pp. 181-182.
Patent Abstracts of Japan, vol. 9, No. 244, (E-346)(1967), 30 Sep. 1985, JP-A-60 94520, (Fujitsu K.K.), 27-05-1985; 1 page.
European Search Report, Application Number EP 86 10 4081, The Hague, Date of Completion of the Search, 01-10-1987; 2 pages.

Affiliated with

Also associated with

Rating

Surface acoustic wave resonator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface acoustic wave resonator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface acoustic wave resonator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1091062