EP 0071508 B1 19870121 - SMALL-DIMENSIONED MICROWAVE FILTER WITH LINEAR RESONATORS
Title (en)
SMALL-DIMENSIONED MICROWAVE FILTER WITH LINEAR RESONATORS
Publication
Application
Priority
FR 8114425 A 19810724
Abstract (en)
[origin: EP0071508A1] 1. A microwave filter comprising n linear hair-pin resonators (H'1 -H'5 ), n being a positive integer, characterized in that the length of each resonator is smaller than lambda/2, lambda being the wavelength corresponding to the center frequency of the filter band, and that a capacitor (C1 -C2 ) is branched between the open ends of each resonator, the capacitance of said capacitor being such that a resonance frequency equal to said center frequency of the filter band is obtained in the resonant circuit constituted by said capacitor and the associated resonator.
IPC 1-7
IPC 8 full level
H01P 1/203 (2006.01); H01P 1/212 (2006.01); H01P 7/08 (2006.01)
CPC (source: EP)
H01P 1/20372 (2013.01)
Citation (examination)
"Microwave Filter of coupled Lines and Lumped Capacitances", reprinted from the IEEE transaction on Microwave Theory and Techniques, Vol. MTT-18, pages 278 a 280, (mai 1970)
Designated contracting state (EPC)
CH DE GB IT LI NL SE
DOCDB simple family (publication)
EP 0071508 A1 19830209; EP 0071508 B1 19870121; DE 3275253 D1 19870226; FR 2510325 A1 19830128; FR 2510325 B1 19870904; JP S5816901 U 19830202; JP S6329282 Y2 19880808
DOCDB simple family (application)
EP 82401307 A 19820709; DE 3275253 T 19820709; FR 8114425 A 19810724; JP 11159382 U 19820722