Wave transmission lines and networks – Resonators – Cavity resonator
Patent
1985-08-30
1987-02-10
Nussbaum, Marvin L.
Wave transmission lines and networks
Resonators
Cavity resonator
333210, 333230, 333232, H01P 1219, H01P 710
Patent
active
046425918
ABSTRACT:
A dielectric resonance apparatus for resonating in a TM mode such as TM 110 or the like. The apparatus includes a case having therein at least two TM-mode dielectric resonators, these resonators being oriented in the case so that their magnetic fields intersect each other. The apparatus also comprises means for coupling the magnetic fields. The TM-mode dielectric resonators may be integrally or separately formed. Each adjacent pair of resonators may be magnetically interconnected by an irregularly shaped portion of the case, such as a depressed portion or a projecting portion, for influencing the respective magnetic fields of each resonator by a selected degree, such that different respective degrees of influence are obtained with respect to the even and odd modes to be produced by the two resonators. The apparatus may include a third dielectric resonator which is closer to the second resonator than to the first resonator, the first and the third resonators being magnetically connected to provide polarized band-pass characteristics. The respective lengths of the first and second resonators may be made different so as to change the degree of magnetic connection between the first and third resonators.
REFERENCES:
patent: 4489293 (1984-12-01), Fiedziuszko
Murata Manufacturing Co. Ltd.
Nussbaum Marvin L.
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