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AssigneeMurata Manufacturing Co., Ltd.
InventorsTakaya Wada, Jun Hattori
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Two TE modes whose electric-field rotating planes have a perpendicular relationship are coupled independently of the coupling between two TM modes whose electric-field directions have the same respective perpendicular relationships. In a multimode dielectric resonator device producing four modes: TM01δ_x mode, TM01δ_y mode, TE01δ_x mode, and TE01δ_y mode, protrusions (Pe1), (Pe2) are disposed on an upper-layer (La) and a lower-layer of a dielectric core (1) to cause a difference in effective dielectric constants of individual parts through which even-mode and odd-mode electric flux of the TE coupling modes passes. A protrusion (Pc) is formed on a middle-layer Lb of the dielectric core (1) such that the effective dielectric constants of the parts through which even-mode and odd-mode electric flux of the TM coupling modes pass become substantially equal. Thereby, the TE01δ_x mode and TE01δ_y mode are coupled while restraining the coupling of the TM01δ_x mode and the TM01δ_y mode.
A multimode dielectric resonator device comprising a dielectric core disposed in a cavity, said dielectric core producing a first TM01δ mode or TM011 mode having an electric field directed in a first direction, a second TM01δ or TM011 mode having an electric field directed in a second direction perpendicular to the first direction, a first TE01δ mode having an electric field rotated in a plane perpendicular to the first direction, and a second TE01δ mode having an electric field rotated in a plane perpendicular to the second direction, respectively,
A multimode dielectric resonator device comprising a four-stage resonators having a first TM01δ mode or TM011 mode, a first TE01δ mode, a second TE01δ mode, and a second TM01δ mode or TM011 mode coupled in sequence, wherein the first and the second TE01δ modes are coupled with the first and the second TM01δ mode or TM011 mode, respectively, by displacing a center of electric field distribution of the first and the second TM01δ modes or the first and the second TM011 modes upwardly or downwardly in planes perpendicular to the directions of the electric fields of the first and the second TM01δ modes or the first and the second TM011 modes.
Dependencies are inferred from the claim text.