Ceramic bandpass filter

Details Ceramic bandpass filter Ceramic bandpass filter

1982-02-16

1984-02-14

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333202, 333207, 333222, H01P 1202, H01P 1205, H01P 704

Patent

active

044319770

ABSTRACT:
A unique ceramic bandpass filter is disclosed that is comprised of a dielectric block having one or more holes extending from its top surface to its bottom surface and further having input and output electrodes each disposed on the dielectric block at a predetermined distance from a corresponding hole. The dielectric material is preferably a ceramic comprised of BaO, TiO.sub.2 and ZrO.sub.2. If there is only one hole in the dielectric block, the input and output electrodes may be arranged around that hole. If there are two or more holes in the dielectric block, one electrode may be located near the hole at one end and the other electrode may be located near the hole at the opposite end of the dielectric block. The dielectric block is entirely plated with copper or silver with the exception of portions near each hole and the input and output electrodes. Each plated hole is essentially a coaxial resonator. Coupling between adjacent coaxial resonators provided by the plated holes can be adjusted by slots or additional holes located therebetween. Two or more of unique ceramic bandpass filters can be intercoupled to provide a filter with greater selectivity or a multi-band filter for combining and/or frequency sorting two or more signals into/from a composite signal.

REFERENCES:
patent: 3293644 (1966-12-01), Loos et al.
patent: 3413577 (1968-11-01), Massano
patent: 3691487 (1972-09-01), Yoshimoto
patent: 3713051 (1973-01-01), Kell
patent: 3728731 (1973-04-01), Choi et al.
patent: 3798578 (1974-03-01), Konishi et al.
patent: 3811101 (1974-05-01), Karp
patent: 3938064 (1976-02-01), O'Bryan, Jr. et al.
patent: 3973226 (1976-08-01), Affolter et al.
patent: 4101854 (1978-07-01), Gikow et al.
patent: 4136320 (1979-01-01), Nishikawa et al.
patent: 4179673 (1979-12-01), Nishikawa et al.
patent: 4186359 (1980-01-01), Kaegebein
patent: 4276525 (1981-06-01), Nishikawa et al.
patent: 4291288 (1981-09-01), Young et al.
patent: 4386328 (1983-05-01), Masuda et al.

Affiliated with

Also associated with

Rating

Ceramic bandpass 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 Ceramic bandpass filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ceramic bandpass filter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2377371