EP 1391963 A1 20040225 - Dielectric tube loaded metal cavity resonators and filters
Title (en)
Dielectric tube loaded metal cavity resonators and filters
Title (de)
Metallische Hohlraumresonatoren und Filter mit dielektrischem Rohr
Title (fr)
Résonateurs et filtres à cavité métallique chargée avec tube diélectrique
Publication
Application
Priority
EP 02255805 A 20020820
Abstract (en)
A dielectric tube loaded metal cavity resonator or filter (100) comprises a housing (102) a dielectric tube resonator cavity (106) extending substantially the full height of the device. The housing (102) and cover (104) may be formed of metal, or may be of metal coated plastics material. A high dielectric constant tube resonator (110) is positioned centrally within the cavity (106). The resonators and filters achieve low insertion loss in a size substantially smaller than conventional dielectric loaded resonators for equivalent quality factors. The dielectric tube resonators may be used with coaxial resonators to provide mixed resonator filter constructions. A securing mechanism (120A) is provided at one wall of the housing for locating the resonator, and a turning screw is provided at the opposing wall of the housing and extending within the dielectric tube. <IMAGE>
IPC 1-7
IPC 8 full level
H01P 1/208 (2006.01); H01P 7/10 (2006.01)
CPC (source: EP)
H01P 1/2084 (2013.01); H01P 7/10 (2013.01)
Citation (search report)
- [XY] EP 0399770 A1 19901128 - NIPPON DENGYO KOSAKU KK [JP], et al
- [Y] EP 1174944 A2 20020123 - MITEC TELECOM INC [CA]
- [A] US 4613838 A 19860923 - WADA HIDEKAZU [JP], et al
- [A] EP 1164655 A2 20011219 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [A] TAHERI M M ET AL: "ACCURATE DETERMINATION OF MODES IN DIELECTRIC-LOADED CYLINDRICAL CAVITIES USING A ONE-DIMENSIONAL FINITE ELEMENT METHOD", IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, IEEE INC. NEW YORK, US, vol. 37, no. 10, 1 October 1989 (1989-10-01), pages 1536 - 1541, XP000054903, ISSN: 0018-9480
Designated contracting state (EPC)
DE DK FI GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 02255805 A 20020820