Piezoelectric ladder filter utilizing resonator with electrodes

Details Piezoelectric ladder filter utilizing resonator with electrodes Piezoelectric ladder filter utilizing resonator with electrodes

1996-12-10

1998-12-01

Lee, Benny

Wave transmission lines and networks

Coupling networks

Electromechanical filter

333192, 310348, 310368, H03H 9205, H03H 958, H03H 910

Patent

active

058444521

ABSTRACT:
A piezoelectric resonator having a miniature size and being fabricated at a low cost is used in a ladder-type filter that has a substrate, on the front and back surfaces of which line electrodes are provided. A series resonator includes a substantially rectangular piezoelectric plate vibrating in a length vibration mode and has vibrating electrodes located on a pair of opposite side edge surfaces of the substantially rectangular piezoelectric substrate. A parallel resonator including a substantially rectangular piezoelectric plate vibrating in a length vibration mode has vibrating electrodes located on the front and back major surfaces of the substantially rectangular piezoelectric substrate. The series and parallel resonator are mounted on the substrate in such a manner as to be spaced apart from each other. The vibrating electrodes of the series resonator are connected with the line electrodes, respectively, by using a conductive adhesive agent. One of the vibrating electrodes of the parallel resonator is connected to the vibrating electrode of the series resonator through a conductive adhesive agent. Further, the other of the vibrating electrodes of the parallel resonator is connected to the remaining line electrode through a metallic wire.

REFERENCES:
patent: 4323865 (1982-04-01), Tanaka et al.
patent: 4454444 (1984-06-01), Fujiwara et al.
patent: 5400001 (1995-03-01), Asakawa et al.
patent: 5596244 (1997-01-01), Kogou et al.
Jumonji; "High-Impedence Piezielectric Ceramic Resonators and Their Application to Ladder Filters"; Electronics and Communications in Japan, vol. 53-A, No. 8, 1970; pp. 17-23, Jan. 1970.

Affiliated with

Also associated with

Rating

Piezoelectric ladder filter utilizing resonator with electrodes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Piezoelectric ladder filter utilizing resonator with electrodes , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Piezoelectric ladder filter utilizing resonator with electrodes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398683