High frequency filter

Details High frequency filter High frequency filter

2005-03-03

2009-02-03

Le, Don P (Department: 2819)

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

C333S202000

Reexamination Certificate

active

07486162

ABSTRACT:
An improved high frequency filter of coaxial construction comprises one or more resonators having an electrically conductive internal conductor configured as an internal conductive tube and an electrically conductive external conductor. An electrically conductive base electrically interconnects the internal conductor and the external conductor. A cover covers the high frequency filter with respect to the base; and an inner side and outer side. The inner side points toward a free end of the internal conductive tube. A dielectric layer having a dielectric constant Ergreater than 2 is arranged between the outer side of the cover and the free end of the internal conductive tube. The radial extent of the dielectric layer substantially covers the cross section of the internal conductive tube at the free end thereof.

REFERENCES:
patent: 6437664 (2002-08-01), Meppelink et al.
patent: 6452465 (2002-09-01), Brown et al.
patent: 2006/0255888 (2006-11-01), Mayr
patent: 1 169 747 (2000-04-01), None
patent: 1 202 375 (2002-05-01), None
International Search Report of PCT/EP2005/002248, mailed Jun. 16, 2005.
Patent Abstracts of Japan, vol. 11, No. 343, Nov. 10, 1987, for JP 62 123801, published Jun. 5, 1987.
Patent Abstracts of Japan, vol. 17, No. 178, Apr. 7, 1993, for JP 04 332202 A, published Nov. 19, 1992.
Wang et al., “Modeling of Re-Entrant Coaxial and Combline Resonators and Filters”, IEEE Antennas and Propagation Society International Symposium 1996 Digest, vol. 1, Jul. 21, 1996, pp. 280-283, XP000782160.
Wu et al., Institute of Electrical and Electronics Engineers, “A full Wave Analysis of a Conductor Post Insert Reentrant Coaxial Resonator in Rectangular Waveguide Combine Filters”, 1996 IEEE MTT-S International Microwave Symposium Digest, vol. 3, Jun. 17, 1996, pp. 1639-1642, XP000720658.
Hunter, IEE Electromagnetic Waves Series 48, Abschnitt 5.8, “Theory and Design of Microwave Filters”.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4107193