JPS62169504A - High frequency device using resonator coaxial to inductor - Google Patents

Abstract

PURPOSE:To attain the standardization of a case and also to decrease the types of component parts by forming the grooves to the opposite side walls of a recess part of a resonator case to hold a partitioning plate of the recess part. CONSTITUTION:A groove 6 reaches the bottom surface of a case 2 from each of the opposite side walls of a recess part 3 and a partitioning plate 7 is set into the groove 6. Here plural sheets of plates 7 can be set into the groove 6 by setting properly the width of the groove 6. A spring 8 is attached to the plate 7 and a resonator 1 is stored in the part 3 with a single end face of the resonator 1 pressed by the spring 8. Therefore it is not required to prepare various type of spacers of different thickness values and furthermore plural types of resonators of different lengths can be fixed into the part 3 despite the unified size of the part 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high frequency device using a dielectric coaxial resonator, and particularly relates to a housing structure for a dielectric coaxial resonator.

[Summary of the Invention] The present invention relates to a high frequency device in which at least one dielectric coaxial resonator is housed in a recess provided in a case.

A dielectric coaxial resonator having a short axial dimension is housed in the recess by forming a pair of grooves in each opposing side wall of the recess to receive and hold a partition plate that partitions the recess. In this case, the purpose is to easily shorten the axial dimension of the recess by inserting the partition plate into the groove.

[Prior Art] As a high frequency device using dielectric coaxial resonators, there is, for example, a filter device in which a plurality of dielectric coaxial resonators are housed in a case.

FIG. 7 is a longitudinal sectional side view of a main part of an example of a conventional filter device. In such a filter device, the dielectric coaxial resonance 'a1 partially affects the tM Fi accommodated in the recess 3 provided in the case 2 which is conductive. A plurality of recesses 3 are provided in parallel in the case 2, and a dielectric coaxial resonator 1 is accommodated in each recess 3. Note that the dielectric coaxial resonator 1 is shown very schematically, and illustrations of the electrodes formed thereon and the manner of electrical connection to the outside are omitted.

In the filter device configured as described above, the center frequency of each dielectric coaxial resonator 1 is individually varied depending on the purpose of use and required characteristics. Therefore, the axial dimension of each dielectric coaxial resonator 1 not only differs between products, but also differs for each of the plurality of dielectric coaxial resonators 1 incorporated in the case 2 in one product. There is.

The dielectric coaxial resonator 1 was fixed to the case 2 by inserting a spacer 4 or a spring made of rubber, for example, between the dielectric coaxial resonator 1 and one end surface 5 of the recess 3 ( For example, Japanese Utility Model Application Publication No. 59-76107).

Therefore, when the length of the dielectric coaxial resonator 1 in the axial direction changes as described above, either the length of the recess 3 in the axial direction is changed, or the thickness of the spacer 4 is changed while keeping the dimensions of the recess 3 the same. Either method was used.

[Problems to be Solved by the Invention] However, both of the above two methods adopted to deal with the change in the axial length of the dielectric coaxial resonator 1 have problems to be solved. There was a problem. That is, in the first method, it is not possible to unify the processing of the case 2, and in the second method, there are problems in that spacers 4 having several different thicknesses must be prepared in advance. , the burden on material costs and work time was large.

Therefore, the present invention aims to provide a structure of a high-frequency device using a dielectric coaxial resonator, which can standardize the case and reduce the number of types of parts to be prepared.

[Means for Solving the Problems] The present invention provides that at least one dielectric coaxial resonator comprises:
This is a high frequency device housed in a recess provided in a case, and the above technical problem is solved as follows.

That is, a pair of grooves are formed in each opposing side wall of the recess for receiving and holding a partition plate that partitions the recess.

[Operations and Effects of the Invention] According to the present invention, if the partition plate is inserted into the pair of grooves,
One end surface of the recess is formed by this partition plate, and the axial dimension of the recess, which is effective for accommodating the dielectric coaxial resonator, is shortened. Therefore, with this, at least one stage of adjustment of the dimensions of the recess can be realized by the partition plate. Additionally, if the width of the groove is set so that it can accept multiple stacked bulkhead plates, the range of adjustment of the dimensions of the recess can be roughly expanded depending on the number of bulkhead plates. . Furthermore, if a plurality of grooves are arranged in the axial direction of the recess, the range of adjustment of the dimensions of the recess can be further expanded by selecting the groove in which the partition plate is to be inserted.

This eliminates the need for spacers, which conventionally required many types of spacers with different thicknesses.Also, even if the dimensions of the recesses are standardized, the axial quality may vary. ! It becomes possible to fix two or more types of dielectric coaxial resonators within the recess. Therefore, reductions in material costs and working time can be expected.

[Embodiment] FIGS. 1 to 3 show essential parts of an embodiment of the present invention. FIG. 1 is an exploded perspective view, FIG. 2 is a longitudinal side view, and FIG. 3 is a top view.

In the following description, the same reference numerals will be used for elements corresponding to those shown in FIG. 7, and redundant description will be omitted.

As shown in FIG. 1, the dielectric coaxial resonator 1 has a cylindrical shape as a whole, and the recess 3 provided in the case 2 is shaped like this 11? In order to match the shape of the resting coaxial resonator 1, the bottom surface forms a partially cylindrical inner peripheral surface.

In this embodiment, a series of grooves 6 are formed extending from each opposing side wall of the recess 3 to the bottom surface. This results in a pair of grooves being formed on each opposing side. A partition plate 7 made of metal, for example, is inserted into this groove 6. For example, the thickness of the partition plate 7 is Q, 4
By selecting the width of the groove 6 to be 1.6 mm, a plurality of partition plates 7 can be inserted into the groove 6.

A spring 8 is arranged so as to be in contact with the partition plate 7.

The spring 8 is formed, for example, from an elastic metal plate by sheet metal processing. The dielectric coaxial resonator 1 is housed in the recess 3 with one end surface thereof pressed against the spring 8 . At this point, due to the elasticity of the spring 8, the NN body coaxial common camera device 1 is fixed within the recess 3.

Referring to FIG. 4, when it is intended to accommodate the current reading body Ji'i-axis resonator 1a having a shorter axial dimension in the recess 3 having the same dimensions, two partition plates 7 are used, for example. These partition plates 7 are all inserted into one chamber 6.

Furthermore, as shown in FIG. 5, when trying to accommodate a dielectric coaxial resonator 1b with better axial dimensions in the recess 3, the spring 8 is inserted into the recess 3 without using the partition plate 7. It is arranged so as to be in direct contact with one end surface 5.

FIG. 6 shows another embodiment of the invention. In FIG. 6, two grooves 6 are arranged in the axial direction of the recess 3.
aa3 and 6b are formed.

The number of such grooves 5a, 5b may be further increased.

According to the embodiment shown in FIG. 6, by selecting either the groove 6a or 6b as the groove into which the partition plate 7 (not shown) is inserted, the range of adjustment of the substantial dimensions of the recess 3 is further increased. Can be expanded.

In each of the above embodiments, the grooves 6.6a and 6b were formed extending to the bottom surface of the recess 3, but such grooves were provided only on the opposing side walls of the recess. Good too.

Further, the present invention is applicable not only to the filter device exemplified above but also to all high frequency designs using dielectric coaxial resonators.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing essential parts of an embodiment of the present invention. FIG. 2 is a vertical sectional side view of the main parts of the high frequency device shown in FIG. 1. FIG. 3 is a top view of the main parts of the high frequency device similarly shown in FIG. 1. 4 and 5 show dielectric coaxial resonators 1 having different axial dimensions, respectively.
FIG. 2 is a top view of the main parts of the high-frequency device, showing a state in which a or 1b is housed. FIG. 6 is a top view showing a recessed portion of another embodiment of the present invention. FIG. 7 is a longitudinal sectional side view of a main part of a filter device as an example of a conventional high frequency device. In the figure J3, 1.1a and 1b are dielectric coaxial resonators,
2 is a case, 3 is a recess, 6.6a and 6b are grooves, and 7 is a partition plate.

Claims (1)

[Scope of Claims] A high-frequency device in which at least one dielectric coaxial resonator is housed in a recess provided in a case, wherein each opposing side wall of the recess receives a partition plate that partitions the recess. A high frequency device using a dielectric coaxial resonator, characterized in that a pair of grooves are formed for holding.