JPH0936620A - Dielectric resonator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a dielectric resonator more easily with respect to the support and the guide of its tuning element. SOLUTION: A case 1, a resonator element 2 which has an aperture 3 and is attached in the case 1, a dielectric tuning element 4 which can be put into the aperture 3 in the resonator element 2, and a holding element 5 which holds the tuning element 4 in the case 1 are provided, and the aperture 3 of the resonance element 2 is constituted as a blind hole, and the holding element 5 is coupled to the tuning element 4 and is constituted as a screw guided in the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case, a resonator element having an opening and mounted in the case, a dielectric tuning element that can be introduced into the opening in the resonator element, and a tuning element in the case. And a holding element for holding the dielectric resonator.

[0002]

2. Description of the Prior Art Such a dielectric resonator is known from EP-A-0316813. Such a dielectric resonator has a cylindrical hollow case made of metal, for example. In this case, a cylindrical dielectric resonator element made of a material having a high dielectric constant, for example, ceramics is mounted. A slit-shaped space is formed in the dielectric resonator element, the slit-shaped space including a U-shaped cross section and two notched portions having diameters extending in opposite directions. The hollow part of the dielectric resonator then has two cutouts extending in opposite directions. In the hollow portion of the dielectric resonator, a cylindrical tuning element made of a material having a high dielectric constant, such as ceramics, is inserted. The outer shape of this tuning element is smaller than the inner shape of the hollow portion of the dielectric resonator. In this way the tuning element can be moved axially in the hollow part of the dielectric resonator by means of the bearing axis. This allows the dielectric resonator to be tuned.

The drawbacks of this known dielectric resonator are:
The bearing axis for the tuning element must be guided in the case by the bearing in a costly manner so that the tuning element can be set exactly in the hollow part of the resonator element by movement of the bearing axis. It is in.

[0004]

SUMMARY OF THE INVENTION It is an object of the invention to provide a simpler dielectric resonator arrangement for supporting and guiding the tuning element.

[0005]

This object is achieved in a dielectric resonator of the type mentioned at the outset, according to the invention, by means of the features of claim 1.

Embodiments of the present invention are described in the second and subsequent claims.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings.

According to FIG. 1, the dielectric resonator according to the invention has a case 1 in which a resonator element 2 having an opening 3 in the form of a blind hole is mounted. Furthermore, a dielectric tuning element 4 that can be introduced into the blind hole 3 of the resonator element 2 is provided, and an element 5 that holds this tuning element 4 in the case 1 is connected to the tuning element 4 and the case 1 is provided. It is provided in the form of a screw leading to.

In the embodiment of the present invention, the resonator element 2 and the tuning element 4 are formed in a cylindrical shape, and in this case, the diameter Dr of the resonator element 2 and the diameter Da of the blind hole 3 are related to each other.
According to 2Dr <Da <0.9Dr.

Furthermore, the depth Ta of the blind hole 3 and the height Hr of the resonator element 2 are particularly in accordance with the relational expression Ta ≦ 0.98Hr.

Finally, the diameter Dab and the height Hab of the tuning element 4 and the diameter Da of the blind hole 3 are given by the relational expression Dab <D.
a and Hab ≧ 0.5 Ta.

According to another embodiment of the resonator element 2 according to FIG. 2, a ring-shaped seat 20 may be provided on the side opposite the blind hole 3. This seat 20 may be glued to the resonator element 2, for example.

According to the embodiment according to FIG. 3, the resonator element 2
Is configured as a step element having a step 30 provided on the side opposite to the blind hole 3.

According to FIG. 4, the step 30 has a recess 3 in it.
1 is provided.

The dielectric resonator according to the invention has the advantage that a large linear tuning range is obtained with a substantially constant merit over the entire tuning range.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an embodiment of a dielectric resonator configured according to the present invention.

2 is a schematic view of another embodiment of the resonator element according to FIG.

FIG. 3 is a schematic view of another embodiment of the resonator element according to FIG.

FIG. 4 is a schematic view of another embodiment of the resonator element according to FIG.

[Explanation of symbols]

 1 Case 2 Resonator Element 3 Blind Hole 4 Tuning Element 20 Seat 30 Stage 31 Notch

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 390041508 Siemens, Matsushita, Components, Gezelshyaft, Mitt, Besilyenktel, Haftung, und, Companion, Comandate, Geselsyaft Siefelt Science Sights, Things, Things, and Things, Things, Things Federal Republic of Germany Miyunchen (no house number) (72) Inventor Gerhard Pepelco Austria 8530 Germany Ciyuland's Berg Leibenfürder Scheutraße 42

Claims (9)

[Claims] 1. A case (1) and a resonator element (2; 2, 2) having an opening (3) mounted in the case (1).
0; 2,30; 2,30,31) and the resonator element (2;
2, 20; 2, 30; 2, 30, 31) openings in (3)
In a dielectric resonator having a dielectric tuning element (4) that can be introduced into a housing and a holding element (5) that holds the tuning element (4) in the case (1), a resonator element (2; 2, 20) ;
The opening (3) in 2, 30; 2, 30, 31) is configured as a blind hole, and the holding element (5) is coupled with the tuning element (4) and guided in the case (1). A dielectric resonator characterized by being a screw. 2. Resonator element (2) and tuning element (4)
2. The dielectric resonator according to claim 1, wherein the dielectric resonators are made of a ceramic material having the same value. 3. Resonator elements (2; 2, 20; 2, 30;
2, 30, 31) and the tuning element (4) are formed in a cylindrical shape, and the diameter (Dr) of the resonator element and the diameter (Da) of the blind hole (3) are expressed by the relational expression 0.2 Dr <Da <. 0.
The dielectric resonator according to claim 1 or 2, which is compliant with 9 Dr. 4. The depth (Ta) of the blind hole (3) and the height (Hr) of the resonator element (2; 2, 20; 2, 30; 2, 30, 31) are expressed by the relational expression Ta ≦ 0. 4. The dielectric resonator according to claim 1, wherein the dielectric resonator complies with 98 Hr. 5. The diameter (Dab) and height (Hab) of the tuning element (4) and the diameter (Da) of the blind hole (3) are subject to the relations Dab <Da and Hab ≧ 0.5Ta. The dielectric resonator according to claim 1. 6. Dielectric according to one of the claims 1 to 5, characterized in that the resonator element (2, 20) has a ring-shaped seat (20) on the side opposite the blind hole (3). Body resonator. 7. Dielectric resonator according to claim 6, characterized in that the ring-shaped seat (20) is glued to the resonator element (2). 8. Resonator element (2, 30) is configured as a step element having a step (30) provided on the side opposite the blind hole (3). 5
1. A dielectric resonator according to any one of 1. 9. A dielectric resonator according to claim 8, characterized in that the step (30) is provided with a notch (31).