KR100772620B1 - Metal case for electromagnetic radiation suppression in integrated dielectric filter for wireless communication - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal case structure for suppressing electromagnetic radiation in an integrated dielectric filter for wireless communication. The present invention relates to a metal case structure for suppressing electromagnetic radiation.

To this end, the metal case structure for suppressing electromagnetic radiation according to the present invention surrounds a dielectric block having a plurality of resonant holes formed therein, and suppresses electromagnetic fields radiated from an open surface of a dielectric filter in which a ground electrode is not formed. In the metal case structure for electromagnetic radiation suppression mounted to the dielectric filter, the first plate located on the upper surface of the dielectric block, and one end of the first plate is connected at right angles to the dielectric block opening surface and minute A second plate disposed at a distance from the second plate, a coupling part soldered to the printed circuit board at a lower end of the second plate, at least one hole soldered to the upper surface of the dielectric, one end of the first plate and the 2nd plate is formed in the bent part connected to the right angle quality control One of the at least one tuning for use in sphere, provided with a side surface of the first plate and the second plate side is a first wing and a second wing for reducing radiated electromagnetic field formed in the meeting surfaces characterized in that formed.

Communication parts, dielectric, filter, electromagnetic radiation suppression, electromagnetic radiation suppression wing, metal case

Description

Metal case for electromagnetic radiation suppression in integrated dielectric filter for wireless communication {METAL CASE FOR ELECTROMAGNETIC FIELDS SUPPRESSION IN MONOBLOCK DIELECTRIC FILTER FOR WIRELESS COMMUNICATION}

1 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the first embodiment of the present invention.

Figure 2 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a second embodiment of the present invention.

Figure 3 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a third embodiment of the present invention.

Figure 4 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a fourth embodiment of the present invention.

Figure 5a is a front side perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the first embodiment of the present invention.

Figure 5b is a rear side perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the first embodiment of the present invention.

Figure 6a is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a second embodiment of the present invention.

Figure 6b is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a second embodiment of the present invention.

Figure 7a is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to a third embodiment of the present invention.

7B is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the third embodiment of the present invention.

8 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the fourth embodiment of the present invention.

9 is a perspective view showing a schematic configuration of a metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the fifth embodiment of the present invention.

* Explanation of reference numerals for the main parts of the drawings *

10: first plate 11: second plate

20: first coupling part 21: second coupling part

22: third coupling portion 23: fourth coupling portion

30: first hole 31: second hole

32: third hole 33: fourth hole

40: first tuning sphere 41: second tuning sphere

42: third tuning sphere 43: fourth tuning sphere

50: first cutting tool 51: second cutting tool

60: first wing 61: second wing

70: dielectric filter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal case structure for suppressing electromagnetic radiation in an integrated dielectric filter for wireless communication. The present invention relates to a metal case structure for suppressing electromagnetic radiation.

The dielectric filter is to connect the discrete dielectric blocks formed with the cavity resonator in the axial direction to obtain the desired passband characteristics. The integral dielectric filter is an improvement of the dielectric filter, and it is possible to connect several poles in one single dielectric block. To simplify its structure.

Such a dielectric filter is used as a bandpass filter to filter only signals of a specific transmission / reception frequency band in a mobile communication device and a relay device using an RF band, and it is required to be small and light in weight.

The integrated dielectric filter forms a pole inside the dielectric block of the rectangular parallelepiped, passing through the front and rear surfaces of the dielectric block, and an electrode is formed therein, and a ground electrode is formed on all outer surfaces of the dielectric block except the front surface of the dielectric block. The front of the block is configured to form various types of patterns to adjust the resonant frequency and coupling.

The integrated dielectric filter emits a large amount of electromagnetic fields in a pattern formed on the front surface thereof, thereby lowering the specificity of the filter itself, and also affects other communication components disposed adjacent to the substrate. It is attached to prevent deterioration of properties.

FIG. 1 is a view showing a preferred embodiment according to the present invention. Referring to FIG. 1, a metal case of a conventional integrated dielectric filter will be described. As shown in FIG. 1, the first plate 10 has a dielectric filter 70. It is soldered to the upper ground electrode of the second plate 11 is mounted on the dielectric filter 70 and the printed circuit board spaced apart from the front surface of the dielectric block by a small gap.

That is, the conventional metal case does not have the novel and advanced components shown in FIG. 1 showing the case structure according to the preferred embodiment of the present invention, and simply bends the plate at right angles to surround the top and front surfaces of the dielectric filter. In addition, the distance between the front surface of the dielectric filter and the second plate positioned in front of the second filter is finely adjusted to obtain desired operating characteristics.

Here, since the side of the dielectric filter and the second plate 11 should be mounted to be spaced precisely by a minute gap so as not to affect the operation of the filter, various methods have been considered in the conventional integrated dielectric, but the structure is complicated. Therefore, there is a problem such as deterioration of production efficiency, and also has the disadvantage that there is little or no tuning tool for quality control.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to precisely secure the distance between the metal plate and the dielectric block when a metal plate that suppresses electromagnetic radiation is mounted on the dielectric block constituting the integrated dielectric filter. In addition, the present invention provides a metal case structure for suppressing electromagnetic radiation, which enables stable quality control of the dielectric filter, that is, tuning.

In addition, another object of the present invention is to provide a metal case structure that can be applied to the metal case in the shape of a wing to see a more efficient electromagnetic radiation suppression effect.

In order to achieve the above object, the metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter according to the present invention includes an open surface of a dielectric filter surrounding a dielectric block having a plurality of resonant holes formed therein and having no ground electrode formed therein. A metal case structure for suppressing electromagnetic radiation, which is mounted to the dielectric filter to suppress an electromagnetic field radiated from the first case, the first plate positioned on an upper surface of the dielectric block and one end thereof at a right angle to one end of the first plate. A second plate connected to and spaced apart from the dielectric block opening surface by a small distance, a coupling part soldered to a printed circuit board at a lower end of the second plate, and at least one hole soldered to the upper surface of the dielectric block And one end of the first plate and the second plate are at a right angle. It is characterized in that it comprises at least one tuning sphere configured to be used in the quality control is configured in the bending portion connected to

The apparatus further includes a first cutting tool 50 to a second cutting tool 51 on the second plate and the dielectric filter front surface.

In addition, when the dielectric block is relatively small, it may further include a first wing 60 to the second wing 61 for increasing the effect of suppressing the electromagnetic radiation.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention.

(Example 1)

1, 5A and 5B are views and photographs showing the configuration of the first preferred embodiment of the present invention.

As shown in the figure, a first plate 10 positioned on an upper surface of the dielectric block and one end of the first plate connected at right angles to each other are installed at a position spaced a small distance from the front surface of the integrated dielectric block. A second plate 11, a first coupling portion 20 and a second coupling portion 21 soldered to a printed circuit board at a lower end of the second plate, and a dielectric block 70 at the first plate 10. A first tuning hole 40 to a fourth tuning hole 43 located at a position where the first hole 30 to the fourth hole 33 soldered to the first plate and the second plate meet at a right angle. Formed.

The number of the first holes 30 to the fourth holes 33 to be soldered in the first embodiment is not fixed but may be varied according to each application system.

(Example 2)

2, 6A and 6B show a second embodiment according to the present invention. As shown in each figure, the first plate 10 positioned on the upper surface of the dielectric block and one end of the first plate are connected at right angles to be installed at a position spaced a small distance from the front surface of the integrated dielectric block. The second plate 11, the first coupling part 20 to the fourth coupling part 23 soldered to the printed circuit board at the lower end of the second plate, and the first plate and the second plate are perpendicular to each other. It is decided to form the first tuning tool 40 to the second tuning tool 41 and the first cutting tool 50 to the second cutting tool 51 which are located at the point where they meet.

In the second embodiment, one or more holes (eg, 30 and 31 of FIG. 1) to be soldered may be additionally placed, and in this case, the number of holes may not be fixed but may be varied. The first cutting tool 50 to the second cutting tool 51 may not be placed.

(Example 3)

3, 7A and 7B show a third embodiment according to the present invention. As shown in the drawing, a first plate 10 positioned on the top surface of the dielectric block and one end of the first plate connected at right angles to each other are installed at a position spaced a small distance from the front surface of the integrated dielectric block. A second plate 11, a first coupling part 20 soldered to the printed circuit board at a lower end of the second plate, and a first hole 30 soldered to the dielectric block 70 at the first plate 10. ) To the second hole 31, and the first tuning sphere (40) to the second tuning sphere (41) located at a position where the first plate and the second plate meet at right angles.

(Example 4)

4 and 8 show a fourth embodiment according to the present invention.

A first plate 10 positioned on an upper surface of the dielectric block and a second plate 11 connected to one end of the first plate at a right angle so as to be spaced apart from the front surface of the integrated dielectric block by a small distance; A first coupling part 20 to a third coupling part 22 soldered to the printed circuit board at a lower end of the second plate, and a first hole soldered to the dielectric block 70 at the first plate 10. 30 to 2nd hole 31, and the 1st tuning sphere 40 and the 2nd tuning sphere 41 located in the place where the said 1st plate and the said 2nd plate meet at right angles, In addition, the electromagnetic field It is characterized by forming the first wing 60 to the second wing 61 to increase the effect of suppressing radiation.

(Example 5)

9 shows a fifth embodiment according to the present invention. In FIG. 9, a first plate 10 positioned on an upper surface of the dielectric block and a second plate disposed at a position spaced at a small distance from the front surface of the integrated dielectric block at one end thereof connected at right angles to one end of the first plate ( 11), a first coupling part 20 soldered to the printed circuit board at the lower end of the second plate, and first holes 30 to first soldered to the dielectric block 70 at the first plate 10. The second hole 31 and the first tuning sphere 40 are formed where the first plate and the second plate meet at right angles.

As described above, in the integrated dielectric filter for wireless communication according to the present invention, the first plate 10, the second plate 11, and the first coupling part 20 to the fourth in a metal case structure for suppressing electromagnetic radiation. The coupling part 23 is collectively referred to as a case, and the precise separation from the dielectric block 70 may be performed by simply using the cut portions of the first tuning holes 40 to the fourth tuning holes 43. The productivity improvement can be achieved by preventing the delay of assembly time that occurs.

In addition, after the integrated dielectric filter is produced, an appropriate tuning tool for efficient quality control is available.

In addition, the metal case structure for suppressing electromagnetic radiation in the integrated dielectric filter for wireless communication according to the present invention may achieve the suppressed electromagnetic radiation effect by having the first blades 60 to the second blade 61.

Claims (5)

In the metal case for electromagnetic field suppression mounted on the dielectric filter to surround the dielectric block having a plurality of resonant holes formed therein, and to suppress the electromagnetic field radiated from the open surface of the dielectric filter in which no ground electrode is formed, A first plate positioned on an upper surface of the dielectric block; A second plate connected to one end of the first plate at a right angle and installed at a position spaced apart from the dielectric block opening surface; At least one tuning tool configured to be used at the time of quality control by forming a bent portion in which one end of the first plate and the second plate are connected at right angles; The first wing and the second wing for electromagnetic radiation suppression is formed on the side where the side of the first plate and the side of the second plate meet Metal case comprising a. In the metal case for electromagnetic field suppression mounted on the dielectric filter to surround the dielectric block having a plurality of resonant holes formed therein, and to suppress the electromagnetic field radiated from the open surface of the dielectric filter in which no ground electrode is formed, A first plate positioned on an upper surface of the dielectric block; A second plate connected to one end of the first plate at a right angle and installed at a position spaced apart from the dielectric block opening surface; A coupling part soldered to the printed circuit board at the bottom of the second plate; At least one tuning tool configured to be used at the time of quality control by forming a bent portion in which one end of the first plate and the second plate are connected at right angles; First to second cutting tools respectively positioned at both ends of the first plate and the second plate where they meet at right angles; The first wing and the second wing for electromagnetic radiation suppression is formed on the side where the side of the first plate and the side of the second plate meet Metal case comprising a. The method according to claim 1 or 2, And at least one hole soldered to the top surface of the dielectric. The method of claim 1, The metal case further comprises a coupling portion soldered to the printed circuit board at the bottom of the second plate. delete

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