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US 5,859,574 AGranted
Dielectric resonator, and microwave filter provided therewith
AssigneeRobert Bosch GmbH
InventorDietmar Schmitt
Life of this patent
Estimating the term…
Abstract
In a dielectric resonator a dielectric insert is formed so that at least two slots are provided, which are located opposite to one another and extend symmetrically and radially toward a center. Because of the radial slots, a dielectric resonator with high mode distance and high quality is obtained.
Claims25
A dielectric resonator, comprising a resonator housing;
- and at least one dielectric insert located in said resonator housing, said at least one insert having means for providing modes with a same resonance frequency, wherein a sufficiently high modes distance is obtainable, and suppressing a base mode, said means including at least two symmetrical slots which are located opposite to one another and extend radially far relative to a center of said insert for providing modes with a same resonance frequency, wherein a sufficiently high modes distance is obtainable, and suppressing a base mode.
A microwave filter for multiplexors, having a resonator housing;
- and at least one dielectric insert located in said resonator housing, said at least one insert having means for providing modes with a same resonance frequency, wherein a sufficiently high modes distance is obtainable, and suppressing a base mode, said means including at least two symmetrical slots which are located opposite to one another and extend radially far relative to a center of said insert for providing modes with a same resonance frequency, wherein a sufficiently high modes distance is obtainable, and suppressing a base mode.
A dielectric resonator, comprising a resonator housing;
- and at least one dielectric insert located in said resonator housing, said at least one insert being formed so that it produces at least two symmetrical slots which are located opposite to one another and extend radially relative to a center of said insert, said dielectric insert having a central region and outer regions provided with said slots, said central region of said dielectric insert having a higher dielectric constant than said outer regions.
Dependencies are inferred from the claim text.