Multiple-mode dielectric resonator, dielectric filter, and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorsMasamichi Ando, Takaya Wada, Kunihiro Komaki
Life of this patent
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Abstract
A multiple-mode dielectric resonator in which a through hole is formed in a substantially cubic dielectric core so as to pass through opposing surfaces thereof. A conductive support bar is inserted into the through hole. Both ends of the support bar are secured to a cavity, and opposing inside walls defining the cavity are electrically connected to each other (are short-circuited) by the support bar. Therefore, the dielectric core is disposed in the cavity without using a support base, so that the resonance frequencies of TM01 delta modes, which are spurious modes, are considerably separated from frequencies of TE01 delta modes that are used.
Claims18
A multiple-mode dielectric resonator comprising:
- a conductive cavity having a rectangular parallelepiped form;
- a dielectric core disposed in the conductive cavity so as to be separated by a predetermined distance from a surface of at least one inside wall defining the cavity;
- and
- at least two support bars inserted into respective through holes in the dielectric core, the at least two support bars being secured to the cavity so that the dielectric core is supported in the cavity, and both ends of each support bar are joined to different pairs of opposing inside walls of the cavity.
Dependencies are inferred from the claim text.