Title:
DIELECTRIC RESONATOR
Document Type and Number:
WIPO Patent Application WO1999066583
Kind Code:
A3
Abstract:
A TE0 gamma delta mode dielectric resonator (12) includes a cylindrical dielectric disk (32, 32', 32'') having top and bottom ends (20, 22) spaced apart by a closed curve wall (24). The dielectric disk has an effective dielectric constant greater than 40. An axially aligned hole (36) is formed through the disk (32) between the top and bottom ends (20, 22). A conductive wall (34, 34'') is formed at or slightly beyond the wall (24) but does not cover the top and bottom ends (20, 22). The hole (36) has a preferred diameter between 0.21 and 0.4 times the diameter of the disk (32, 32', 32''). The disk may be configured as a heterogeneous composite of dissimilar materials which exhibit increasing dielectric constant at increasing radial distance and increasing Q at decreasing radial distance.
Inventors:
EL-SHARAWY EL-BADAWY AMIEN (US)
Application Number:
PCT/US1999/011667
Publication Date:
November 08, 2001
Filing Date:
May 26, 1999
Export Citation:
Assignee:
NAT SCIENT CORP (US)
EL SHARAWY EL BADAWY AMIEN (US)
EL SHARAWY EL BADAWY AMIEN (US)
International Classes:
H01P7/10; (IPC1-7): H01P7/10
Foreign References:
| US3798578A | 1974-03-19 | |||
| US4706052A | 1987-11-10 | |||
| EP0492304A1 | 1992-07-01 | |||
| JPS6098703A | 1985-06-01 | |||
| US5859574A | 1999-01-12 | |||
| US2890422A | 1959-06-09 |
Other References:
See also references of EP 1177592A4
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