JPS63187902A - Coupling adjusting mechanism for integral molding dielectric resonator - Google Patents

Abstract

PURPOSE:To execute a fine adjustment by the constitution which is low in its cost and compact, by constituting the titled mechanism so that a plate member consisting of a metal or a dielectric is placed in the opening part of a coupling hole, and this plate member covers a part or the whole of the opening part of the coupling hole. CONSTITUTION:In an integral molding dielectric resonator, the resonator body 1 is formed in a shape of a rectangular parallelopiped, and a through-hole 2 and a coupling hole 3 are provided on the inside. As for the through-hole 2, its cross section is formed circularly, and plural pieces are placed at a prescribed interval, and constituted so that input and output terminals can be inserted. As for the coupling hole 3, its cross section is formed rectangularly, and said hole is placed between the adjacent through- holes 2. Also, each through-hole 2 and the coupling hole 3 extend in parallel to each other, and opened to a short surface 4 of the resonator body 1, respectively. To this short surface 4, a metallic case 5 is fixed. In the metallic case 5, a cut-raised piece 6 is formed in the part corresponding to the coupling hole 3, and this cut-raised piece 6 is formed in a rectangular shape corresponding to the coupling hole 3, and its tip part is inserted into the coupling hole 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coupling adjustment mechanism for an integrally molded dielectric resonator provided with coupling holes for adjusting coupling.

[Prior Art] In conventional integrally molded dielectric resonators, coupling holes are provided in the resonator itself in order to obtain desired coupling.

In general, in order to finely adjust the degree of bonding, a rod member made of a dielectric or metal is inserted into the bonding hole, and the degree of insertion of the rod member can be changed as appropriate to finely adjust the bonding. That's what I do.

[Problem to be Solved by the Invention 1] The conventional coupling adjustment mechanism described above cannot make the resonator more compact because the rod member for fine adjustment protrudes outward from the resonator itself. .

Furthermore, since a rod member is required, sufficient cost reduction cannot be achieved.

An object of the present invention is to enable fine adjustment of the coupling of an integrally molded 8-9 electric body resonator with a lower cost and more compact configuration.

[Means for Solving the Problems] The coupling adjustment mechanism for the integrally molded dielectric resonator according to the present invention includes:
Coupling of an integrally molded dielectric resonator provided with a coupling hole for adjusting the coupling: In the A configuration, a plate member made of metal or dielectric is arranged at the opening of the coupling hole.

As the arrangement configuration of the J3, l distribution member, a configuration may be adopted in which the plate member covers a part or all of the opening of the coupling hole. Furthermore, a configuration may be adopted in which the plate member is a cut-and-raised piece inserted into the opening of the coupling hole.

[fI'' 1 The coupling hole provided in the resonator acts to change the degree of coupling between the resonators by changing its shape, size, and position in various ways.However, the coupling hole provided in the resonator Since the bonding holes are pre-formed in the bonding hole itself, fine adjustment of the degree of bonding cannot be performed only by using the bonding holes.

Fine adjustment of the coupling degree of the resonator is performed by variously changing the arrangement of the plate members.

For example, if the degree of coverage of the plate member covering the opening of the coupling hole is changed, the degree of coupling between the resonators will be slightly changed. Therefore, by changing the extent to which the opening is covered by the plate member, the degree of coupling between the resonators can be finely adjusted. Furthermore, when the plate member is made into a cut-and-raised piece, by changing the degree of insertion of the cut-and-raised piece into the opening of the coupling hole, the degree of coupling between the common cylindrical organs can be subtly changed. This also allows fine adjustment of the degree of coupling between the resonators.

In this case, since the plate member as described above is used, it does not protrude to the outside as in the case of a conventional rod member, and the integrally molded dielectric resonator can be made more compact.

[Example] As shown in FIG. 1, a resonator body 1 known from, for example, Japanese Patent Laid-Open No. 58-9401 has a generally rectangular parallelepiped shape, and has a through hole 2 and a coupling hole 3 inside. . The through holes are circular in cross section, and a plurality of through holes are arranged at predetermined intervals. An input/output terminal (not shown) is inserted into this through hole 2. The coupling hole 3 is a hole having a rectangular cross section, and is arranged between adjacent through holes 2. As shown in FIG. 2, the through holes 2 and the coupling holes 3 extend parallel to each other and open into the short surface 4 of the resonator body 1, respectively. A metal case 5 is fixed to the seat surface 1 with adhesive, solder, or the like.

In the metal case 5, a cut-and-raised piece 6 is formed in a portion corresponding to the coupling hole 3.

The cut-and-raised piece 6 has a rectangular shape corresponding to the coupling hole 3, and only its negative side is integrally continuous with the metal case 5 itself.

The cut-and-raised piece 6 is woven and bent in a continuous portion with the metal case 5 itself, so that the tip of the cut-and-raised piece 6 is inserted into the coupling hole 3.

In this embodiment, by changing the bending angle of the cut and raised pieces 6, the coupling between the resonances 3 can be finely adjusted.

Furthermore, since the cut and raised piece 6 is inserted into the coupling hole 3, parts for fine adjustment do not protrude outside. Furthermore, the cut and raise piece 6 is a member cut and raised from the metal case 5, so the number of parts does not increase.

E-Another Embodiment] (a> Instead of the above configuration in which the cut-and-raised piece 6 provided on the metal case 5 is employed, a configuration as shown in FIG. 3 may be adopted.

In FIG. 3, the opening of the coupling hole 3 is covered with a plate H7. The plate member 7 is fixed to the short surface 4 of the 1iiS main body 1 with adhesive or solder.

Further, this plate member 7 is made of a dielectric material such as ceramics or metal. In the illustrated state, only a part of the opening of the coupling hole 3 is covered by the plate member 7;
The entire opening of the coupling hole 3 may be covered by the plate member 7'c.

In order to finely adjust the connection of the common 1st axis, open the connection hole 3 [
The area covered by the plate member 7 may be changed.

This slightly changes the degree of coupling between the resonators, so
The resonator coupling can be fine-tuned.

Also, in this configuration, no component protrudes from the common resonator, so the resonator does not become large. Moreover, since the plate member 7 used may be small and lightweight, it is possible to achieve compactness and cost reduction compared to the conventional configuration.

(b) Metal case 5 in place of the above cut and raised piece 6
By simply forming a hole in a portion corresponding to the coupling hole 3 of the resonator, the coupling between the resonators can be finely adjusted. Further, by providing holes in the plate member 7, fine adjustment of the coupling between the resonators can be similarly performed.

[Effects of the Invention] According to the coupling adjustment 81 of the integrally molded dielectric resonator according to the present invention, a plate member made of metal or dielectric is disposed at the opening of the coupling hole, so that the cost of parts related to the coupling adjustment mechanism is reduced. This makes it possible to reduce the Furthermore, since the coupling adjustment mechanism does not protrude to the outside, the integrally molded dielectric resonator can be made more compact.

[Brief explanation of the drawing]

FIG. 1 is a perspective partial view of an integrally molded dielectric resonator employing the coupling adjustment mechanism according to the present invention, and FIG. 2 is M-I of FIG. 1.
FIG. 3 is a partial perspective view of another embodiment. 3 is a coupling hole, 6 is a cut and raised piece, and 7 is a plate member.

Claims (3)

[Claims] (1) A coupling adjustment mechanism for an integrally molded dielectric resonator provided with a coupling hole for adjusting coupling, characterized in that a plate member made of metal or dielectric is disposed at the opening of the coupling hole. Coupling adjustment mechanism for molded dielectric resonators. (2) The coupling adjustment mechanism for an integrally molded dielectric resonator according to claim 1, wherein the plate member covers a part or all of the frontage of the coupling hole. (3) The coupling adjustment mechanism for an integrally molded dielectric resonator according to claim 1, wherein the plate member is a cut and raised piece inserted into the opening of the coupling hole.