Dielectric filter having increased bandwidth

Details Dielectric filter having increased bandwidth Dielectric filter having increased bandwidth

2005-01-18

2005-01-18

Le, Dinh T. (Department: 2816)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S202000, C333S134000

Reexamination Certificate

active

06844796

ABSTRACT:
A dielectric filter includes a plurality of resonators provided in a dielectric block in parallel to each other. Each resonator is formed through providing an inner conductor on a wall surface of a through-hole extending between first and second end surfaces of the block. An outer conductor is provided on end and side surfaces of the block except for the first end surface. The inner conductor and the outer conductor are connected together so that the second end surface serves as a short circuit end surface, and the first end surface serves as an open end surface. A pair of input-output terminals are provided on a side surface of the block so that the input-output terminals are located adjacent to the open end surface at respective positions corresponding to open ends of two of the resonators. Insulating sections on the side surface isolate corresponding input-output terminals from the outer conductor formed on the side surface of the block. A section without a conductor thereon is used in controlling filter characteristics. This section is provided on the side surface between the input-output terminals and extends for a predetermined distance along the insulating sections from an edge between the side surface and the open end surface.

REFERENCES:
patent: 5218329 (1993-06-01), Vangala et al.
patent: 5506554 (1996-04-01), Ala-Kojola
patent: 5652555 (1997-07-01), Tada et al.
patent: 5831495 (1998-11-01), Hino
patent: 6235341 (2001-05-01), Hino
patent: 6504455 (2003-01-01), Toda et al.
patent: 6680661 (2004-01-01), Hiroshima et al.
patent: 20020022948 (2002-02-01), Okada et al.
patent: 1 098 384 (2002-05-01), None
patent: 2 359 420 (2001-08-01), None
patent: 2 374 985 (2002-10-01), None
patent: 2 382 234 (2003-05-01), None
patent: 110340708 (1999-12-01), None
patent: 2001284905 (2001-10-01), None

Affiliated with

Also associated with

Rating

Dielectric filter having increased bandwidth does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3378618