Wave transmission lines and networks – Coupling networks – Frequency domain filters utilizing only lumped parameters
Patent
1990-08-15
1991-12-24
LaRoche, Eugene R.
Wave transmission lines and networks
Coupling networks
Frequency domain filters utilizing only lumped parameters
333185, H03H 709
Patent
active
050756508
ABSTRACT:
A bandpass filter consisting of two dielectric resonators coupled with each other, the bandpass filter comprising: a filter body including an intermediate grounding layer, a first pair of dielectric layers, a pair of inductor layers, a second pair of dielectric layers, a pair of outer grounding electrode layers and a pair of protecting layers, one of each pair being laminated on an upper surface of the intermediate grounding electrode layer in the above order to constitute a first resonator and the other of each pair being laminated on a bottom surface of the intermediate grounding electrode layer in the above order to constitute a second resonator; and a plurality of outer connecting terminals provided on outer surfaces of said filter body and connected to predetermined layers among the intermediate grounding electrode layer, inductor layers and outer grounding electrode layers; wherein the intermediate grounding electrode layer has a coupling portion for magnetically coupling one inductor layer formed on the upper surface thereof with the other inductor layer formed on the bottom surface thereof.
REFERENCES:
patent: 4591814 (1986-05-01), Ito et al.
patent: 4614925 (1986-09-01), Kane
patent: 4894629 (1990-01-01), Okamura et al.
patent: 4904967 (1990-02-01), Morii et al.
patent: 4916582 (1990-04-01), Okamura et al.
patent: 4918570 (1990-04-01), Okamura et al.
Okamura Hisatake
Taniguchi Tetsuo
Tonegawa Ken
Tsuru Teruhisa
Ham Seung
LaRoche Eugene R.
Murata Manufacturing Co. Ltd.
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