EP 0101369 B1 19880518 - BAND-PASS FILTER WITH DIELECTRIC RESONATORS PRESENTING NEGATIVE COUPLING BETWEEN RESONATORS
Title (en)
BAND-PASS FILTER WITH DIELECTRIC RESONATORS PRESENTING NEGATIVE COUPLING BETWEEN RESONATORS
Publication
Application
Priority
FR 8213927 A 19820810
Abstract (en)
[origin: EP0101369A1] 1. A resonator filter comprising a rectangular waveguide (1-3) and n dielectric resonators (R1-R6) disposed inside the waveguide (with n being not less than 4), in which negative coupling is provided between two of the n resonators (R2, R5), the waveguide operating below its cutoff frequency, the filter being characterized in that the waveguide is folded back on itself with a wall (2) that is common between its two folded portions, the two negatively coupled resonators being situated on either side of the common wall, the dimensions of the cross-section of the waveguide being about 2 to 2.5 times the transverse dimensions of the resonators, and in that the filter includes a coupling rod (20) for providing the negative coupling, said rod passing through the common wall via a hole and being electrically separate from the common wall, at least apart from its ends.
IPC 1-7
IPC 8 full level
H01P 1/219 (2006.01)
CPC (source: EP)
H01P 1/219 (2013.01)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0101369 A1 19840222; EP 0101369 B1 19880518; AT E34488 T1 19880615; DE 3376717 D1 19880623; FR 2531815 A1 19840217; FR 2531815 B1 19850802
DOCDB simple family (application)
EP 83401602 A 19830802; AT 83401602 T 19830802; DE 3376717 T 19830802; FR 8213927 A 19820810