JPH026641Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the invention The invention relates to a connection structure for a MIC that is attached to a housing.

(b) Background of the technology Microwave integrated circuits (MICs) are generally installed in a sealed case, and connections to external circuits are made by attaching terminals to the side panels of the case.

(c) Prior art and problems Figure 1 shows the connection structure of a conventional MIC, with A being a sectional view and B being a plan view.

In the figure, terminals 2 are insulated and passed horizontally through the opposing side plates of a box-shaped casing 1 made of, for example, copper-based metal, and are attached by soldering. A rectangular recess 12 that is elongated in a direction perpendicular to the axis of the terminal 2 is provided in the center of the bottom plate of the housing 1 . For example, a dielectric substrate 5a is mounted in a groove in the center of a carrier 4 made of copper-based metal and having a rectangular shape in plan view, by soldering with gold and tin. A MIC 5 is formed on the upper surface of the dielectric substrate 5a. The carrier 4 is inserted into the recess 12, and both ends are fixed to the bottom plate of the housing 1 with machine screws 7.

The MIC circulator 3 is formed on the top surface of a dielectric substrate 3a, and the bottom surface of the dielectric substrate 3a of each MIC circulator 3 is conductively bonded.
It is attached to the top surface 11 of the bottom plate on both sides of the MIC5.
A strip line 6 connecting each terminal 2 and each MIC circulator 3 is formed on the top surface of a dielectric substrate 6a, and the bottom surface of the dielectric substrate 6a is conductively bonded to connect the terminal 2 and MIC circulator 3. It is attached to the top surface 11 of the bottom plate. The upper surfaces of these dielectric substrates 5a, 3a, and 6a are configured to be on the same plane.

The MIC circulator 3 and the strip line 6 and the MIC circulator 3 and MIC 5 are wire bonded, and the terminal 2 and the strip line 6 are connected by soldering. The inside of the casing 1 is hermetically sealed by, for example, a laser welded cover (not shown) fixed thereto.

In this structure, the strip line 6 is soldered to the top surface 11 of the bottom plate of the casing 1 with gold and tin brazing, and then the terminal 2 is soldered to the side plate of the casing 1. This means that if the strip line 6 is soldered with gold and tin after the terminal 2 is installed, the
This is because the solder when the terminal 2 is attached melts because the temperature becomes high around 30 degrees.

However, in such a conventional MIC connection structure, since the strip line 6 is attached without the terminal 2 attached, it is difficult to locate the strip line 6.

(d) Purpose of the invention The purpose of the invention is to eliminate the above conventional problems.
Its purpose is to provide a MIC connection structure.

(e) Structure of the device In order to achieve this objective, the device is capable of sliding in a rectangular recess provided in the bottom plate of the case along the side plate of the case in a direction perpendicular to the terminal. , comprising a carrier in which a notch sufficiently larger than the terminal is provided in the vertical direction on the end face of the side plate, and a strip line that is attached to the upper part of the carrier and serves as a connection circuit between the terminal and the MIC circulator, After the terminal is attached to the side plate of the housing, the carrier is inserted into the recess from above so that the terminal loosely inserts into the notch, and the strip line is inserted into the carrier so that it is directly below the terminal. The carrier is fixed to the bottom plate with screws.

(f) Embodiments of the invention The invention will be described in detail below with reference to illustrated embodiments. Note that the same reference numerals indicate the same objects throughout the figures.

In FIG. 2, A is a sectional view, B is a plan view, and C is a perspective view of a carrier of an embodiment of the present invention.

In the figure, a rectangular recess 13 that is long in a direction perpendicular to the axis of the terminal 2 is provided along each side plate of the housing 1 on which the terminal 2 is attached. The width of this recess 13 is determined by the inner wall of the side plate and the upper surface 11 of the bottom plate.
It is equal to the distance between the end faces of the dielectric substrate 3a of the MIC circulator 3 mounted above.

A dielectric substrate 6a is soldered with gold and tin and mounted in a groove 21 at the center of a carrier 20 made of, for example, copper-based metal and having a rectangular shape in plan view. A strip line 6 is formed in the direction of the groove 21 on the upper surface of the dielectric substrate 6a. The carrier 20 can slide within the recess 13 in a direction perpendicular to the terminal, and a notch 23 that is sufficiently larger than the terminal 2 is provided in the vertical direction on the end surface on the terminal 2 side. Also Carrier 20
A hole 22 is formed near both ends of the recess 13 to receive a machine screw 24 which is screwed into a screw hole provided at the bottom of the recess 13 .

After each terminal 2 is soldered and attached to the opposite side plate of the housing 1, the carrier 20 is inserted into the recess 13 from above so that the terminal 2 is loosely inserted into the notch 23, and the strip line 6 is inserted into the terminal 2. The carrier 20 is shifted so that it is directly below the .
Thereafter, the carrier 20 is fixed to the bottom plate of the recess 13 with machine screws 24.

The MIC circulator 3 and the strip line 6 and the MIC circulator 3 and MIC 5 are wire bonded, and the terminal 2 and the strip line 6 are connected by soldering.

After installing the terminal 2 in this way, the strip line 6
The carrier 20 with the terminal 2 attached can be inserted into the recess 13 and adjusted by sliding it in the direction regulated by the inner wall of the recess 13 while visually observing the terminal 2. This allows the position of the terminal 2 and the strip line 6 to be adjusted It is extremely easy to match. Furthermore, the carrier 20 is easily fixed by screws.

(g) Effects of the invention As explained above, the present invention not only makes it easy to align the strip line that connects the terminal and the MIC circulator, but also makes it extremely easy to fix the strip line by simply screwing the carrier. This is a simple MIC connection structure that has excellent practical effects.

[Brief explanation of the drawing]

Figure 1 shows the connection structure of a conventional MIC; A is a sectional view and B is a plan view; Figure 2 shows an embodiment of the present invention; A is a sectional view, B is a plan view, and C is a perspective view of the carrier. It is a diagram. In the figure, 1 is the housing, 2 is the terminal, 3 is the MIC circulator, 3a, 5a, 6a are the dielectric substrates, 4, 2
0 is carrier, 5 is MIC, 6 is strip line,
7 and 24 are machine screws, 12 and 13 are recesses, 21 is a groove, and 23 is a notch, respectively.

Claims (1)

[Scope of Claim for Utility Model Registration] In a structure in which a MIC mounted on the bottom plate of a housing is connected to a terminal mounted on at least one side plate of the housing via a MIC circulator, the side plate is attached to the bottom plate of the housing. A rectangular groove is provided in a direction parallel to the terminal, a carrier is provided that can slide in the groove in a direction perpendicular to the terminal, and a cut sufficiently larger than the terminal is made in the carrier parallel to the terminal. A strip line is provided on the end face facing the terminal, a strip line parallel to the notch is provided near the notch on the upper part of the carrier, and the MIC circulator and the terminal are connected via the strip line. do
MIC connection structure.