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US 5,315,274 AGranted
Dielectric resonator having a displaceable disc
AssigneeNokia Telecommunications Oy
InventorVeli-Matti Sarkka
Life of this patent
Estimating the term…
Abstract
The invention relates to a dielectric resonator (3) comprising two cylindrical discs made of a dielectric material. In the invention, the discs (3A,3B) are positioned with their planar surfaces against each other, so that they are radially displaceable with respect to each other for varying the shape of the resonator (3) and for adjusting the resonance frequency (3).
Claims18
A dielectric resonator comprising:
- a first cylindrical dielectric disc having a first planar surface;
- a second cylindrical dielectric disc having a second planar surface, said first surface and said second surface being in contact with each other;
- means for displaying one of said first and second discs with respect to the other one of said first and second discs in a radial direction, parallel to said first surface and said second surface such that a resonance frequency of said resonator is adjusted.
A dielectric resonator comprising:
- a first cylindrical dielectric disc having a first planar surface;
- a second cylindrical dielectric disc having a second planar surface, said first surface and said second surface being in contact with each other, said first disc being thicker than said second disc in a longitudinal axial direction;
- means for displacing one of said first and second discs with respect to the other one of said first and second disc in a radial direction, parallel to said first surface and said second surface such that a resonance frequency of said resonator is adjusted.
A dielectric resonator comprising:
- a first dielectric structure having at least a first flat surface and a first thickness perpendicular to said first flat surface;
- a second dielectric structure having at least a second flat surface and a second thickness perpendicular to said second flat surface, said first flat surface and said second flat surface being in contact with each other;
- means for displacing one of said first and second structures with respect to the other one of said first and second structures in a direction parallel with said first flat surface and said second flat surface such that a resonance frequency of said resonator is adjusted.
Dependencies are inferred from the claim text.