Surface acoustic wave filter and mobile communication system usi

Details Surface acoustic wave filter and mobile communication system usi Surface acoustic wave filter and mobile communication system usi

1995-01-23

1996-05-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

333193, H01L 4108

Patent

active

055214533

ABSTRACT:
A composite surface acoustic wave filter includes an interdigitated interdigital surface acoustic wave filter having input and output terminals. Two one-port surface acoustic wave resonators are electrically connected in series to the interdigitated interdigital surface acoustic wave filter respectively at the input and output terminals, the one-port surface acoustic wave resonators having antiresonant frequencies in a stop band that is close to and higher than the passband of the interdigitated interdigital surface acoustic wave filter. Two other one-port surface acoustic wave resonators are electrically connected parallel to the interdigitated interdigital surface acoustic wave filter, the one-port surface acoustic wave resonators having resonant frequencies in a stop band that is close to and lower than the passband of the interdigitated interdigital surface acoustic wave filter.

REFERENCES:
patent: 3659231 (1972-04-01), De Vries
patent: 4785270 (1988-11-01), Kinsman
patent: 4803449 (1989-02-01), Hikita et al.
patent: 4947073 (1990-08-01), Stokes et al.
patent: 5202652 (1993-04-01), Tabuchi et al.
patent: 5265267 (1993-11-01), Martin et al.
patent: 5287036 (1994-02-01), Penunuri
Patent Abstracts of Japan; vol. 15, No. 510, Dec. 1991; & JP-A-03 222 511.
Patent Abstracts of Japan; vol. 15, No. 510; Dec. 1991 & JP-A-3 222 512.

Affiliated with

Also associated with

Rating

Surface acoustic wave filter and mobile communication system usi 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 filter and mobile communication system usi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface acoustic wave filter and mobile communication system usi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-789151