Electronic component and ladder filter

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

310348, 333189, H01L 4108

Patent

active

059398191

ABSTRACT:
A ladder filter has a piezoelectric resonator having reduced spurious vibrations and having a wider range of selection of the difference .DELTA.F between the resonant frequency and the antiresonant frequency, and has a substantially reduced size. The ladder filter includes an insulating substrate on which four pattern electrodes are provided. Four lands are respectively formed as portions of the four pattern electrodes. Another land is formed as a portion of the second pattern electrode. External electrodes of four piezoelectric resonators adapted to vibrate in a longitudinal vibration mode and capable of being mounted in a surface mount manner are connected to the land of the pattern electrodes by supporting members made of an electroconductive material. The four piezoelectric resonators are arranged in a row in the order of a first series resonator, a first parallel resonator, a second parallel resonator and a second series resonator.

REFERENCES:
patent: 2157665 (1939-05-01), Hollmann
patent: 3185869 (1965-05-01), Shoor
patent: 3297889 (1967-01-01), Breskend
patent: 3401275 (1968-09-01), Curran et al.
patent: 3590287 (1971-06-01), Berlincourt et al.
patent: 4087716 (1978-05-01), Haywang
patent: 4360754 (1982-11-01), Toyoshima et al.
patent: 4398117 (1983-08-01), St. Cyr
patent: 4503352 (1985-03-01), Inoue
patent: 4532451 (1985-07-01), Inoue
patent: 4542315 (1985-09-01), Yamamoto et al.
patent: 4564782 (1986-01-01), Ogawa
patent: 4570098 (1986-02-01), Tomita et al.
patent: 4633120 (1986-12-01), Sato et al.
patent: 4642510 (1987-02-01), Yamashita
patent: 4656385 (1987-04-01), Tanaka
patent: 4752712 (1988-06-01), Tomita et al.
patent: 4759107 (1988-07-01), Ogawa et al.
patent: 4780639 (1988-10-01), Shirasu
patent: 4885498 (1989-12-01), Wakita
patent: 5045744 (1991-09-01), Ando et al.
patent: 5118982 (1992-06-01), Inoue et al.
patent: 5126618 (1992-06-01), Takahashi et al.
patent: 5153477 (1992-10-01), Jomura et al.
patent: 5225731 (1993-07-01), Owen
patent: 5233256 (1993-08-01), Hayashi et al.
patent: 5237239 (1993-08-01), Inoue et al.
patent: 5241236 (1993-08-01), Sasaki et al.
patent: 5250870 (1993-10-01), Fenlon et al.
patent: 5381067 (1995-01-01), Greenstein
patent: 5438232 (1995-08-01), Inoue et al.
patent: 5446485 (1995-08-01), Usui
patent: 5517073 (1996-05-01), Ohkuma
patent: 5523645 (1996-06-01), Inoi
patent: 5525944 (1996-06-01), Oyama
patent: 5548179 (1996-08-01), Kaida
patent: 5565824 (1996-10-01), Nagano
patent: 5572082 (1996-11-01), Sokol
patent: 5585687 (1996-12-01), Wakabayashi et al.
patent: 5596243 (1997-01-01), Tsuru et al.
patent: 5596244 (1997-01-01), Kugou et al.
patent: 5696472 (1997-12-01), Kaida
patent: 5705880 (1998-01-01), Shimura et al.
patent: 5717365 (1998-02-01), Kaida et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Electronic component and ladder filter does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-317544

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.