EP 0114140 B1 19890308 - TUNABLE MICROWAVE FILTER WITH TM010 MODE DIELECTRIC RESONATORS
Title (en)
TUNABLE MICROWAVE FILTER WITH TM010 MODE DIELECTRIC RESONATORS
Publication
Application
Priority
FR 8300755 A 19830119
Abstract (en)
[origin: US4578655A] A filter comprising a metal case having a metal base and a lid forming a guide of any section but under cut-off, that is to say which does not allow guided propagation. Cylindrical dielectric resonators are in contact with the metal securing base and the resonators resonate then in the TM010 mode. For frequency tuning of the filter, the distance between the bottom of the lid and the ends of the dielectric resonators supported by the base is variable. The invention applies more especially to tuneable band-pass filters.
IPC 1-7
IPC 8 full level
H01P 1/219 (2006.01); H01P 7/10 (2006.01)
CPC (source: EP US)
H01P 1/219 (2013.01 - EP US); H01P 7/10 (2013.01 - EP US)
Citation (examination)
1978 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, Ottawa, 27-29 juin 1978, pages 233-235, New York, US, Y. KOBAYASHI et al.: "Bandpass filters using TM010 dielectric rod resonators"
Designated contracting state (EPC)
AT BE DE GB IT NL SE
DOCDB simple family (publication)
EP 0114140 A1 19840725; EP 0114140 B1 19890308; AT E41271 T1 19890315; CA 1207853 A 19860715; DE 3477104 D1 19890413; FR 2539565 A1 19840720; FR 2539565 B1 19850405; US 4578655 A 19860325
DOCDB simple family (application)
EP 84400077 A 19840113; AT 84400077 T 19840113; CA 445310 A 19840113; DE 3477104 T 19840113; FR 8300755 A 19830119; US 56971284 A 19840110