Title:
LAMINATED STRIP LINE FILTER
Document Type and Number:
Japanese Patent JP3808386
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a laminated strip line filter in which stable filter characteristics are obtained and a degree of freedom in design is large and the miniaturization is easily attained.
SOLUTION: In the laminated strip line filter, approximately L-shaped first and second one-end opened resonant resonant electrodes 32 and 34 and first and second one-end short-circuit resonant electrodes 33 and 35 are arranged to form first and second coupling parts 36 and 37 overlapped in a lengthwise direction across a second dielectric layer 21, and electric lengths θ1 and θ2 of the first and second coupling parts 36 and 37, an electric length θ3 in the portion of the first one-end opened resonant electrode 32 except the first coupling part 36, an electric length θ4 in the portion of the second one-end opened resonant electrode 34 except the first coupling part 36, an electric length θ5 in the portion of the one-end short-circuit resonant electrode 33 except the second coupling part 37 and an electric length θ6 in the portion of the second one-end short-circuit resonant electrode 35 except the second coupling part 37 fulfill the relations of θ3>θ1>θ4, θ5<θ2<θ6 and (θ3-θ1) nearly equal to (θ1-θ4) nearly equals to (θ6-θ2) nearly equal to (θ2-θ5)<10° with respect to a central frequency.
Inventors:
Kenji Tagami
Application Number:
JP2002068987A
Publication Date:
August 09, 2006
Filing Date:
March 13, 2002
Export Citation:
Assignee:
Kyocera Corporation
International Classes:
H01P1/203; H01P1/205; H01P7/08; (IPC1-7): H01P1/203; H01P1/205; H01P7/08
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