JPH01227501A - Dielectric coaxial resonator - Google Patents

Abstract

PURPOSE:To prevent the chute between silver conductors and the separation of the silver conductor by forming a glass layer on the surface of the silver conductor formed to a coaxial dielectric. CONSTITUTION:A silver conductor 5 is formed on the inner circumferential surface of a coaxial dielectric 4 formed in a cylinder shape and the inner circumferential part of the upper surface, and a silver conductor 6 is formed on the bottom surface, outer circumferential surface, and the outer circumferential part of the upper surface. Next, a glass layer 7 is formed between the silver conductor 5 at the inner circumferential surface side of the upper surface of the coaxial dielectric 4 and the silver conductor 6 at the outer circumferential surface side and on the surface of the silver conductor 6 at the outer circumferential surface side. Since the glass layer 7 to be baked at the same time as the silver conductors 5 and 6 is formed in such a way, the short between the silver conductor 5 at the inner circumferential surface side and the silver conductor 6 at the outer circumferential surface side 6 due to a metal piece and a solder flow can be easily and surely prevented, the glass layer 7 can be formed in any part, and the separation of the silver conductor due to a soldering can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a dielectric coaxial resonator used in filters for radio equipment and the like.

BACKGROUND OF THE INVENTION In recent years, as high-frequency mobile radio technology has become more and more practical, dielectric coaxial resonators have come to be widely used in filters that are components of radio equipment.

A conventional dielectric coaxial resonator will be explained below.

Figure 3 is a cross-sectional view of a conventional dielectric coaxial resonator;
The figure shows its top view. Figure 3.

In Fig. 4, 1 is a cylindrical coaxial dielectric, 2 is a silver conductor formed from the inner peripheral surface of the coaxial dielectric 1 to the center of the top surface, and 3 is the bottom surface of the coaxial dielectric 1, from the outer peripheral part to the upper surface. A silver conductor is formed around the outer periphery of the

A method for manufacturing the dielectric coaxial resonator configured as above will be described below.

First, a silver conductor 2 is formed on the inner peripheral surface of a cylindrical coaxial dielectric 1, and a silver conductor 3 is formed on the outer peripheral surface to complete a λ/4 dielectric coaxial resonator.

Problems to be Solved by the Invention However, in the above conventional configuration, the filter
There was a problem in that the silver conductor 2 on the inner peripheral surface side and the silver conductor 3 on the outer peripheral surface side of the upper surface of the coaxial dielectric 1 were short-circuited due to soldering during assembly.

The present invention solves the above-mentioned conventional problems, and aims to provide a dielectric coaxial resonator that can eliminate short-circuits between the silver conductor on the inner peripheral surface side and the silver conductor on the outer peripheral surface side.

Means for Solving the Problems In order to solve the problems, the dielectric coaxial resonator of the present invention has a glass conductor formed on the top surface of the coaxial dielectric between the silver conductors on the inner peripheral surface and the outer peripheral surface, and on the surface of the silver conductors. It has a structure in which layers are formed.

Function: With this configuration, the glass layer to which solder does not adhere can prevent the silver conductor on the inner peripheral surface side from collapsing with the silver conductor on the outer peripheral surface side.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a dielectric coaxial resonator according to an embodiment of the present invention, and FIG. 2 is a top view of the same.

In FIGS. 1 and 2, 4 is a cylindrical coaxial dielectric, 6
6 is a silver conductor formed from the inner peripheral surface of the coaxial dielectric 4 to the inner periphery of the upper surface of the open end surface, and 6 is a silver conductor formed from the bottom surface of the coaxial dielectric 4, from the outer peripheral surface to the outer periphery of the upper surface of the open end surface. The conductor γ is a glass layer formed on the upper surface of the coaxial dielectric 4 between the silver conductor 5 on the inner peripheral surface side and the silver conductor 6 on the outer peripheral surface side, and on the surface of the silver conductor 6 on the outer peripheral surface side.

A method of manufacturing the dielectric coaxial resonance 2g having the above configuration will be described below.

First, a silver conductor 6 is formed on the inner circumferential surface and the inner circumferential portion of the top surface of the coaxial dielectric body 4 formed into a cylindrical shape, and the silver conductor 6 is formed on the bottom surface, outer circumferential portion, and outer circumferential portion of the top surface. It becomes a body coaxial resonator. Next, a glass layer 7 is formed on the upper surface of the coaxial dielectric 4 between the silver conductor 6 on the inner peripheral surface side and the silver conductor 60 on the outer peripheral surface side, and on the surface of the silver conductor 6 on the outer peripheral surface side. A coaxial resonator will be obtained.

As described above, according to this embodiment, a silver conductor is formed between the silver conductor 6 on the inner peripheral surface side and the silver conductor 6 on the outer peripheral surface side of the upper surface of the coaxial dielectric 4, and on the surface of the silver conductor 6 on the outer peripheral surface side. By forming a glass layer 7 that can be baked at the same time as 6°6, it is possible to easily and reliably prevent the silver conductor 5 on the inner circumference side and the silver conductor 6 on the outer circumference side from coming together due to metal pieces or solder flow. can do.

In this embodiment, the coaxial dielectric 4 has a cylindrical shape, but any coaxial dielectric may have any shape, such as a rectangular tube, and the same effect as in this embodiment can be obtained.

Further, in this embodiment, the glass layer 7 is used to prevent a sheet between the silver conductors 6 and 6, but the glass layer 7 may be formed in any part of the dielectric coaxial resonator, and has the effect of preventing the silver conductor from peeling off due to soldering etc. There is.

Effects of the Invention As described above, the present invention has the effect of preventing short circuits between the silver conductors and peeling of the silver conductors by forming a glass layer on the surface of the silver conductor formed on the coaxial dielectric. This realizes an excellent dielectric coaxial resonator.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a dielectric coaxial resonator according to an embodiment of the present invention, Fig. 2 is a top view of the same, Fig. 3 is a sectional view of a conventional dielectric coaxial resonator, and Fig. 4 is a top view thereof. It is. 4... Coaxial dielectric, 5... Silver conductor on the inner peripheral surface side, 6... Silver conductor on the outer peripheral surface side, 7...
...Glass layer. Name of agent: Patent attorney Toshio Nakao and 1 other person4-
Okajiku exaggeration body

Claims (1)

[Claims] A dielectric coaxial resonator in which silver conductors are formed on the inner circumferential surface, bottom surface, outer circumferential surface, and top surface of a coaxial dielectric material, and a glass layer is formed between these silver conductors and on the surface of the silver conductor.