BAND BLOCKING DIELECTRIC FILTER
Document Type and Number:
Japanese Patent JP3498187
PURPOSE: To make the weight of a transmission section of the band blocking dielectric filter light, to facilitate the manufacture and to enhance the economy.
CONSTITUTION: A λ/4 microstrip line (transmission section) 11 is formed to a lower face of a high frequency board 10 with a copper pattern. Both ends of the microstrip line 11 are connected respectively to connectors 2a, 2b. Furthermore, both ends of input and output Qe loops 3a, 3b are connected between an end of the microstrip line 11 and ground. The Qe loops 3a, 3b are coupled magnetically with single mode dielectric resonators of a TM duplex mode resonator in a dielectric resonator 18.
December 05, 2003
January 28, 1994
MURATA MFG CO LTD
H01P1/20; H01P1/208; H01P7/10; H01P1/20; H01P7/10; (IPC1-7): H01P1/20; H01P1/208; H01P7/10