EP 1895615 A1 20080305 - Adjustable coupling
Title (en)
Adjustable coupling
Title (de)
Einstellbare Kopplung
Title (fr)
Couplage reglable
Publication
Application
Priority
EP 06119880 A 20060831
Abstract (en)
The present invention relates to a microwave filter comprising at least one resonator having electrically conductive walls (2, 3) defining a resonator cavity (4) and a coupling mechanism (7, 7', 7") for coupling electromagnetic energy into or out of the resonator cavity (4). The coupling mechanism (7, 7', 7'') comprises a through bore (9, 9'') extending through a wall portion (2) of the resonator extending transversely to the wall portion (2), a coupling element (10, 10') extending through the through bore (9, 9") and comprising a first elongate portion (11b, 11b") adjacent the opening of the through bore (9, 9") into the resonator cavity (4) and a second elongate portion (11a, 25) adjacent the opposite opening of the through bore (9, 9"), wherein the first elongate portion (11b, 11b") projects at least partly into the resonator cavity (4), and wherein the first elongate portion (11b, 11b") and the second elongate portion (11a, 25) are electrically conductive and arranged such that electromagnetic energy can be transferred between the first elongate portion (11b, 11b ") and the second elongate portion (11a, 25), a dielectric mounting (8) for securing the coupling element (10, 10') in the wall portion (2) such that the coupling element (10, 10') is electrically isolated from the wall portion (2), and an adjustment means (14) operable to selectively change the coupling characteristics of the coupling mechanism (7, 7', 7"). The adjustment means (14) is operable to displace the first elongate portion (11b, 11b") and the second elongate portion (11a, 25) with respect to each other to thereby selectively advance the first elongate portion (11b, 11b") from the through bore (9, 9") into the resonator cavity (4) or retract the first elongate portion (11b, 11b") from the resonator cavity (4) into the through bore (9, 9").
IPC 8 full level
H01P 1/205 (2006.01)
CPC (source: EP)
H01P 1/2053 (2013.01)
Citation (search report)
- [DXY] US 6304160 B1 20011016 - LOI KEITH N [US], et al
- [Y] US 4307357 A 19811222 - ALM ROBERT W
- [A] US 6317013 B1 20011113 - HERSHTIG RAFI [US]
- [A] US 5608363 A 19970304 - CAMERON RICHARD J [GB], et al
- [A] FR 2365243 A1 19780414 - NIPPON ELECTRIC CO [JP]
Designated contracting state (EPC)
DE FR GB
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06119880 A 20060831