WO2010147418A2

WO2010147418A2 - Cross-coupling control apparatus and rf cavity filter having the same

Info

Publication number: WO2010147418A2
Application number: PCT/KR2010/003932
Authority: WO
Inventors: 이승철
Original assignee: 주식회사 에이스테크놀로지
Priority date: 2009-06-18
Filing date: 2010-06-17
Publication date: 2010-12-23
Also published as: CN102460825A; WO2010147418A3; KR20100136010A; CN102460825B; KR101541292B1

Abstract

The present invention relates to a cross-coupling control apparatus and an RF cavity filter having the same. The cross-coupling control apparatus comprises: a female coupling bolt, which has a cavity formed inside and a 1st hole formed on one surface; a male coupling bolt, which is inserted into the cavity that is formed in the female coupling bolt and has a 2nd hole formed on one surface in correspondence with the 1st hole; control bolts, which are inserted into the female coupling bolt and the male coupling bolt through the 1st and 2nd holes, come in contact with a 1st interface which is one of the interfaces of the 1st hole and with a 2nd interface which is one of the interfaces of the 2nd hole, and have a thread with a pattern of grooves and protrusions formed on at least part of a side surface, wherein the physical length of a coupling assembly formed by joining the female coupling bolt and the male coupling bolt is adjusted by moving the female coupling bolt in a 1st direction and the male coupling bolt in a 2nd direction opposite to the 1st direction, through the rotation of the control bolt. This apparatus has an advantage that a cross-coupling amount can be adaptively controlled.

Description

Cross-coupling regulator and RF cavity filter including the same

The present invention relates to a cross coupling adjusting device and an RF cavity filter including the same, and more particularly, to a cross coupling adjusting device for forming a notch for adjusting a skirt characteristic of a filter and an RF cavity filter including the same.

The RF cavity filter is a device that forms a plurality of cavities inside the filter to pass only signals in a frequency band used, and is used where a relatively high power frequency signal is used, such as a base station.

1 is a plan view showing the internal configuration of a typical RF cavity filter.

Referring to FIG. 1, a typical RF cavity filter includes a plurality of

cavities

110, 112, 114, 116, 118, 120 defined by an input connector 100, an output connector 102, a housing 104, a housing 104, and a partition wall. ), A plurality of resonators (130, 132, 134, 136, 138, 140) accommodated in each cavity.

An RF signal is applied to the input connector 100, and an RF signal applied to the input connector 100 is provided to the cavity 110. Each

cavity

110, 112, 114, 116, 118, 120 and the

resonators

130, 132, 134, 136, 138, 140 housed in each cavity operate as LC resonant elements, respectively.

The movement of the signal from one cavity to another is through the coupling window 180.

The resonant frequency of the filter is determined by the size of the cavity and the size of the resonator. Although not shown in FIG. 1, a fine tuning operation may be performed using a plurality of tuning bolts.

One of the important bandpass characteristics of the filter is the skirt characteristic. The skirt characteristic means a slope in the boundary band in the band pass characteristic curve of the filter, and the skirt characteristic is preferably set steeply.

Such a skirt characteristic is improved as the order of the filter increases, that is, as the number of cavities and resonators increases, but the skirt characteristic has a trade-off relationship with another loss characteristic of the filter. . That is, as the number of cavities and resonators increases, the skirt characteristic of the filter is improved, but inversely, the insertion loss increases.

A method for improving skirt properties has been conventionally used by forming notches by cross coupling to improve skirt properties while maintaining a constant insertion loss.

Cross-coupling refers to the coupling of non-adjacent resonance periods through the coupling window, such as the coupling between the second resonator 132 and the fifth resonator 138, rather than the sequential coupling through the coupling window. it means.

Such cross-coupling is typically accomplished using a device that desires a coupling, and FIG. 2 shows a conventional filter with a coupling bar.

Referring to FIG. 2, the coupling bar 200 is installed through the sidewall between the second cavity 122 and the fifth cavity 128, and the coupling bar is made of a metal material.

For example, the coupling bar 200 operates so that a signal associated with the second resonator 132 is coupled to the fifth resonator 138, and such a coupling operation is performed through the metal coupling bar 200. This can be done.

A hole is formed in the sidewall between the second cavity 122 and the fifth cavity 128 to penetrate the coupling bar 200, and a dielectric layer is formed on the inner circumferential surface of the hole so that the coupling bar 200 is formed in the sidewall of the housing. And the coupling is made in the state that is not electrically coupled. Since the housing is electrically grounded, when the coupling bar 200 is electrically coupled with the ground, a cross coupling operation between the second resonator 132 and the fifth resonator 138 may not be performed, thereby forming a dielectric layer.

When the coupling bar 200 is used to induce coupling between out-of-sequence resonators, notches occur to improve skirt characteristics in the boundary band.

However, the conventional cross-coupling structure using the coupling bar 200 has a problem in that it is not possible to control the amount of coupling of the resonance period to be cross-coupled. The amount of cross coupling is determined by the size of the coupling bar. In the past, when the coupling required for cross coupling was not achieved, it should have been replaced with a coupling bar 200 having a different size. The amount of coupling in the 200 mounted state could not be adjusted.

In order to solve this conventional problem, a method of adjusting the amount of cross coupling by inserting a tuning bolt into the mounting portion of the coupling bar has been proposed. By the way, this method is a method that can not substantially change the physical length of the coupling bar, the coupling amount is changed by the tuning bolt was a bar has a difficult problem to be used commercially.

In order to solve the problems of the prior art as described above, the present invention is to propose a cross-coupling adjustment apparatus that can adaptively adjust the amount of cross-coupling and an RF cavity filter including the same.

Another object of the present invention is to propose a cross-coupling adjusting device capable of sufficiently adjusting the amount of coupling and an RF cavity filter including the same.

Other objects of the present invention will be readily apparent to those skilled in the art through the following examples.

In order to achieve the above object, according to a preferred embodiment of the present invention, there is provided a cavity coupling bolt having a cavity formed therein and a first hole formed at one surface thereof; A male coupling bolt inserted into a cavity formed in the female coupling bolt and having a second hole corresponding to the first hole on one surface thereof; A second boundary surface inserted into the female coupling bolt and the male coupling bolt through the first hole and the second hole, and a first boundary surface of one of the boundary surfaces of the first hole and one of the boundary surfaces of the second hole; An adjustment bolt having a thread formed in contact with an interface and having grooves and protrusions repeated on at least part of the side portions, wherein the female coupling bolt is moved in a first direction by the rotation of the adjustment bolt, and the mail coupling bolt is moved. A cross coupling adjusting device is provided in which the physical length of the coupling assembly to which the female coupling bolt and the female coupling bolt are coupled is adjusted by moving in a second direction opposite to the first direction.

The interior of the male coupling bolt is hollow to allow insertion of the adjustment bolt.

The male coupling bolt is inserted into the female coupling bolt such that the outer surface of the male coupling bolt contacts the inner surface of the female coupling bolt.

The outer surface of the contact male coupling bolt and the inner surface of the female coupling bolt are preferably coated.

The female coupling bolt and the female coupling bolt are inserted to insert the female coupling bolt into the female coupling bolt such that the adjusting bolt is in contact with one of the boundary surfaces of the first hole and one of the boundary surfaces of the second hole. In the guide structure is formed.

The guide structure is a structure in which a guide protrusion is formed on one of the female coupling bolt and the male coupling bolt and a guide groove is formed on the other. .

A first threaded portion is formed at the first interface and a second threaded portion is formed at the second interface.

As the adjustment bolt rotates, the rotational force of the thread of the adjustment bolt is transmitted to the first threaded portion and the second threaded portion to adjust the physical length of the coupling assembly.

The coupling assembly, to which the female coupling bolt and the male coupling bolt are coupled, is coupled to a hole formed across the side wall of the filter for cross coupling, and the adjustment bolt is connected to a hole formed in the longitudinal direction of the side wall of the filter. It is inserted through the first hole and the second hole.

According to another aspect of the present invention, there is provided a cavity coupling bolt having a cavity formed therein and a first hole formed at one surface thereof; A male coupling bolt inserted into a cavity formed in the female coupling bolt and having a second hole corresponding to the first hole on one surface thereof; A second boundary surface inserted into the female coupling bolt and the male coupling bolt through the first hole and the second hole, and a first boundary surface of one of the boundary surfaces of the first hole and one of the boundary surfaces of the second hole; And an adjusting bolt in contact with an interface, wherein a first thread is formed at the first interface, and a second thread is formed at the second interface, and the female coupling bolt is moved in a first direction by the rotation of the adjustment bolt. To adjust the physical length of the coupling assembly to which the female coupling bolt and the female coupling bolt are coupled by moving the male coupling bolt in a second direction opposite to the first direction. An apparatus is provided.

According to another aspect of the present invention, there is provided a cavity formed therein and a first hole formed on one surface thereof, and a female coupling bolt having a first threaded portion formed on one surface of the boundary surface of the first hole; A male coupling bolt inserted into a cavity formed in the female coupling bolt, the solid structure of which a part is cut in a cylinder, and one side of the cutting surface having a second threaded portion; And a threaded adjustment bolt inserted into the female coupling bolt through the first hole and in contact with the first threaded portion and the second threaded portion, the threaded portion having grooves and protrusions repeated on at least some of the side portions thereof. And the female coupling bolt and the female couple by moving the female coupling bolt in a first direction by rotating the adjusting bolt and moving the male coupling bolt in a second direction opposite to the first direction. A cross coupling adjustment device is provided in which the physical length of the coupling assembly to which the ring bolt is coupled is adjusted.

According to another aspect of the invention, there is provided an RF cavity filter in which the above-described cross coupling adjusting device is coupled to a filter side wall defining a cavity.

According to the present invention, there is an advantage that can adaptively adjust the amount of cross coupling.

2 shows a conventional filter equipped with a coupling bar.

3 is an exploded perspective view of the cross coupling adjusting device according to the first embodiment of the present invention;

4 is a view showing a state in which the female coupling bolt 302 and the male coupling bolt 304 are coupled in the cross coupling adjusting device according to the first embodiment of the present invention.

5 is an exploded perspective view of the cross coupling adjusting device according to the second embodiment of the present invention;

FIG. 6 is a view showing a state in which the female coupling bolt and the male coupling bolt are coupled in the second embodiment. FIG.

7 is an exploded perspective view of the cross coupling adjusting device according to the third embodiment of the present invention;

8 is a front view of the filter side wall to which the male coupling bolt and the female coupling bolt are coupled in the coupling adjusting device according to an embodiment of the present invention.

9 is a sectional view showing a state in which the coupling adjusting device according to the second embodiment of the present invention is coupled to a filter.

10 is a perspective view of a coupling adjusting device according to a second embodiment of the present invention coupled to a filter;

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

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

For convenience of description, the independent structure of the cross coupling adjusting device according to the embodiments of the present invention will be described first, and then the structure in which the cross coupling adjusting device is applied to the RF cavity filter will be described.

3 is an exploded perspective view of the cross coupling adjusting device according to the first embodiment of the present invention.

Referring to FIG. 3, a cross coupling adjusting device according to an embodiment of the present invention includes an adjusting bolt 300, a female coupling bolt 302, and a male coupling bolt 304. can do.

The lower portion of the adjustment bolt 300 is formed with a threaded portion 330 in which grooves and protrusions are continuous in the longitudinal direction. The adjustment bolt 300 is inserted through a hole formed in the cover of the filter and may be made of a metal material, for example, a material such as brass may be used.

The female coupling bolt 302 and the male coupling bolt 304 are inserted into a hole formed in the side wall of the filter for cross coupling. The female coupling bolt 302 and the male coupling bolt 304 are both made of metal.

4 is a diagram illustrating a state in which the female coupling bolt 302 and the male coupling bolt 304 are coupled in the cross coupling adjusting device according to the first embodiment of the present invention.

Referring to FIG. 4, both the female coupling bolt 302 and the male coupling bolt 304 are hollow in a hollow state, and the male coupling bolt is formed in the cavity formed inside the female coupling bolt 302. 304 is inserted. For insertion of the male coupling bolt 304 the diameter of the male coupling bolt is set smaller than the diameter of the female coupling bolt. The diameter of the male coupling bolt is preferably set such that the outer surface of the male coupling bolt 304 contacts the inner surface of the female coupling bolt 302, but cross coupling can be performed even without contact. .

Holes

350 and 360 are formed in the side surfaces of the female coupling bolt 302 and the male coupling bolt 304. The lower portion of the adjusting bolt 300 is inserted into the hole formed in the female coupling fault 302 and the male coupling bolt 304. The

holes

350 and 360 overlap when the male coupling bolt 304 is inserted into the female coupling bolt 302 to form a space in which the adjustment bolt can be inserted.

When the male coupling bolt 304 is inserted into the female coupling bolt 302, as shown in FIG. 4, the male coupling bolt 304 is inserted into the male coupling bolt as compared to the hole 350 formed in the female coupling bolt 302. The formed hole 360 is inserted to be finely biased downward (here, the lower does not mean the upper and lower in space, but the upper and lower in the drawing of FIG. 4).

As shown in FIG. 4, in order to couple the female coupling bolt 302 and the male coupling bolt 304, a structure for the guide at the time of coupling may be used. For example, a guide groove may be formed in the female coupling bolt 302 and a guide protrusion may be formed in the male coupling bolt 304 to allow the guide protrusion to be engaged by engaging the guide groove. . Of course, the guide protrusion may be formed in the female coupling bolt and the guide groove may be formed in the male coupling bolt. It will be apparent to those skilled in the art that, in addition to the guide structure using the grooves and protrusions described above, various known guide structures may be used.

As shown in FIG. 4, the adjusting bolt 300 is inserted in the state in which the female coupling bolt 302 and the male coupling bolt 304 are coupled, and the hole 350 formed in the female coupling bolt 302 is formed. The size and size of the hole 360 formed in the male coupling bolt 304 corresponds to the diameter of the adjustment bolt 300.

The adjustment bolt 300 adjusts the amount of coupling in the cross coupling by changing the physical length of the coupling assembly consisting of the female coupling bolt 302 and the male coupling bolt 304.

In detail, when the adjusting bolt 300 is rotated while being fitted in the female coupling bolt and the hole formed in the male coupling bolt, the rotational force of the threaded portion formed in the adjusting bolt is transmitted to the boundary of the hole to adjust the physical length of the coupling assembly. do.

In FIG. 3, when the adjustment bolt is inserted into the

holes

350, 360 of the female coupling bolt 302 and the male coupling bolt 304, the hole 360 of the male coupling bolt is inserted into the female coupling bolt. Since the state is slightly biased relative to the hole 350 of the upper, the upper boundary surface 380 of the female coupling bolt hole 350 is in contact with the adjustment bolt 304 and one surface, and the male coupling bolt hole ( The lower interface 382 of 360 is in contact with the other surface of the adjustment bolt 304 (where the upper and lower portions are not meant to be spatially up and down, but rather up and down on the figures of FIGS. 3 and 4).

In this state, when the adjusting bolt 304 rotates in the clockwise direction, the female coupling bolt 302 is forced to the left direction and the male coupling bolt 304 is forced to the right direction.

Thus, when the adjusting bolt rotates in the clockwise direction, the coupling assembly to which the female coupling bolt and the male coupling bolt are coupled is opened to each other, and the physical length of the coupling assembly increases.

Conversely, when the adjusting bolt 304 rotates counterclockwise, the female coupling bolt 302 is forced in the right direction, and the male coupling bolt 304 is forced in the left direction.

Thus, when the adjusting bolt rotates counterclockwise, the coupling assembly to which the female coupling bolt and the male coupling bolt are coupled move inwardly with each other, thereby reducing the physical length of the coupling assembly.

That is, when using the coupling adjusting device according to the present invention, it is possible to adjust the physical length of the coupling assembly by adjusting the rotation direction and the degree of rotation of the adjustment bolt 300, the resonance by adjusting the physical length of the coupling assembly The amount of period cross cuffing can be adjusted.

On the other hand, the inner surface of the female coupling bolt and the outer surface of the male coupling bolt may be coated in order to minimize the frictional force generated during the movement of the female coupling bolt and the male coupling bolt by the rotation of the adjustment bolt. .

In addition, the adjustment bolt is preferably made of a metal material may be implemented in a plastic material.

3 and 4 illustrate a case in which a thread is formed on the adjusting bolt among the coupling assembly including the female coupling bolt and the male coupling bolt and the adjusting bolt. Since such a thread should be formed only in one of the adjustment bolts and the

holes

350 and 360 of the coupling assembly, the embodiment in which the threads are not formed in the adjustment bolts but only the

holes

350 and 360 is formed in the first embodiment. It may belong to a category. An example of forming a thread in the

holes

350 and 360 will be described in the second embodiment.

FIG. 5 is an exploded perspective view of the cross coupling adjusting apparatus according to the second embodiment of the present invention, and FIG. 6 is a view illustrating a state in which the female coupling bolt and the male coupling bolt are coupled in the second embodiment. One drawing.

5 and 6, the cross coupling adjusting device according to the second embodiment of the present invention includes an adjusting bolt 500, a female coupling bolt 502, and a male coupling bolt 504. On one surface of the interface of the hole 550 of the female coupling bolt 502, a first thread 520 is formed in which the protrusion and the groove are repeated. On one surface of the interface of the hole 560 of the male coupling bolt, the protrusion and A second thread 530 is formed in which the groove is repeated.

Compared to the first embodiment, the second embodiment has a different structure in which

threads

540 and 542 are formed on one surface of the boundary surfaces of the

holes

550 and 560 of the coupling bolts. And the second threaded portion 542 is formed to more stably move the female coupling bolt 502 and the male coupling bolt 502 according to the rotation of the adjustment bolt.

Also in the second embodiment, the threaded portion 530 in the vertical direction is formed under the adjustment bolt 500, and the male coupling bolt 504 is inserted into the female coupling bolt 502. As shown in FIGS. 5 and 6, the female coupling bolt 502 and the female are biased so that the hole of the male coupling bolt 504 is slightly biased down relative to the hole of the female coupling bolt 502. Coupling bolt 504 is inserted. As described above, various types of guide structures may be formed in the female coupling bolt 502 and the male coupling bolt 504 so that the positions of the holes are exactly aligned.

The upper boundary of the hole 550 of the female coupling bolt is adjusted by a structure in which the hole of the male coupling bolt 504 is inserted to be biased in a downward direction slightly compared to the hole of the female coupling bolt 502. The lower surface of the hole of the male coupling bolt 550 comes into contact with the bolt 500, and the adjusting bolt 500 comes into contact with the bolt 500. The first threaded portion 540 is formed on the upper boundary surface of the hole 550 in contact with the adjustment bolt 500, and the second threaded portion 542 is formed on the lower boundary surface of the hole 560 in contact with the adjustment bolt 500. The threaded portion 530 of the adjustment bolt 500 is engaged with the first threaded portion 540 and the second threaded portion 542.

In this state, when the adjustment bolt 500 rotates in the clockwise direction, the coupling couples the rotational force transmitted to the first threaded portion 540 and the second threaded portion 542 engaged with the threaded portion 530 formed on the adjustment bolt. The ring bolt 502 is forced in the left direction and the male coupling bolt 504 is forced in the right direction.

On the contrary, when the adjusting bolt 500 rotates in the counterclockwise direction, the rotational force is transmitted to the first threaded portion 540 and the second threaded portion 542 meshed with the threaded portion 530 formed on the adjusting bolt. The ring bolt 302 is forced in the right direction, and the male coupling bolt 304 is forced in the left direction.

According to the structure of the second embodiment in which the

threads

540 and 542 are formed on the surface where the

holes

550 and 560 and the adjustment bolt 500 come into contact with each other, the rotational force of the adjustment bolt is increased by the female coupling bolt 502 and the male coupling. While stably transmitted to the bolt 504, stable physical length adjustment of the coupling assembly is possible.

7 is an exploded perspective view of the cross coupling adjusting device according to the third embodiment of the present invention.

Referring to FIG. 7, the third embodiment is a solid structure in which the male coupling bolt 704 has a cavity formed therein. The male coupling bolt 704 is a portion cut from the cylinder, the second threaded portion 742 is formed on the cut surface.

The solid coupling male coupling bolt 704 has a female coupler such that the second threaded portion 742 formed on one side of the cut portion of the cylinder is located at the lower boundary of the hole 750 of the female coupling bolt 702. Guide structures as described above may be formed in the female coupling bolt 702 and the male coupling bolt 704 so that the male coupling bolt is inserted into the ring bolt 702 and the male coupling bolt can be inserted in the correct position.

On the other hand, since the male coupling bolt 704 is a solid structure in which a part of the cylinder is deleted, an insertion space in which the adjustment bolt 700 can be inserted may be formed.

The third embodiment in which the male coupling bolt 704 is formed in a solid structure can be manufactured more easily than the second embodiment in the form of a cavity inside, and the coupling is caused by the rotation of the adjustment bolt. The operation of changing the physical length of the assembly is the same as in the second embodiment.

8 is a front view of the filter side wall to which the male coupling bolt and the female coupling bolt are coupled in the coupling adjusting apparatus according to the embodiment of the present invention.

Referring to FIG. 8, some of the sidewalls of the filter are made of a dielectric part 802, and the other part is made of a conductive material like the other sidewalls. The dielectric part 802 is formed with a hole 800 for inserting the female coupling bolt. As such, forming the dielectric portion 802 as part of the sidewalls and forming a hole 800 in the dielectric portion 802 is in contact with the filter housing where the regulating bolt, the female coupling bolt and the male coupling bolt are electrically grounded. To prevent that. Various kinds of dielectrics may be used to form the dielectric portion 802, and according to an embodiment of the present invention, a dielectric made of Teflon material may be used.

9 is a cross-sectional view showing a state in which the coupling adjusting device according to the second embodiment of the present invention is coupled to a filter, and FIG. 10 is a coupling adjusting device according to the second embodiment of the present invention coupled to a filter. It is a figure which shows the perspective view of the state.

Referring to FIG. 9, a female coupling bolt 502 is inserted into a hole 800 formed in the dielectric part 802 to penetrate the side wall of the filter, and a cavity formed inside the female coupling bolt 500. The male coupling bolt 504 is inserted.

On the other hand, the dielectric portion 802 of the side wall is formed with a hole 1002 in the vertical direction for the adjustment bolt 500 is inserted, the adjustment bolt is a hole coupling with the hole 1002 and the female coupling bolt 500 It is inserted into the

holes

550 and 560 formed in the bolt 502.

As shown in FIG. 9, the dielectric portion 802 constituting part of the sidewall extends to the hole formed in the filter cover 1150 so that the adjustment bolt does not electrically contact the hole formed in the filter cover. A protrusion 950 is formed in the hole 1002 in the vertical direction formed in the dielectric portion 802, and a groove 960 corresponding to the protrusion 950 is formed at the side of the adjustment bolt 500. The adjusting bolt 500 is inserted into the hole 1002 in an interference fit manner, and the protrusion 950 is inserted into the groove 960 so that the combination of the dielectric part 802 and the adjusting bolt 500 is performed. Such a coupling structure merely couples the adjustment bolt 500 and the dielectric part 802 and does not affect the rotation of the adjustment bolt 500.

In the perspective view of FIG. 10, the cover of the filter is omitted and only the state in which the filter is vertically coupled to the dielectric part 802 is shown.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions. Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

Claims

A female coupling bolt having a cavity formed therein and a first hole formed at one surface thereof; a male couple inserted into a cavity formed at the female coupling bolt and having a second hole corresponding to the first hole formed at one surface thereof; A ring bolt; a first boundary surface which is inserted into the female coupling bolt and the male coupling bolt through the first hole and the second hole, and which is one of the boundary surfaces of the first hole, and one of the boundary surfaces of the second hole; And a threaded adjustment bolt in contact with the second boundary surface, the threaded portion having grooves and protrusions repeated on at least a portion of the side portions, wherein the female coupling bolt is moved in a first direction by the rotation of the adjustment bolt. By moving the ring bolt in a second direction opposite to the first direction, the physical length of the coupling assembly to which the female coupling bolt and the female coupling bolt are coupled is increased. Cross-coupling adjuster characterized in that the section.
The cross coupling adjusting device of claim 1, wherein an inside of the male coupling bolt is in a hollow state to allow insertion of the adjusting bolt.
The cross coupling adjustment according to claim 1, wherein the male coupling bolt is inserted into the female coupling bolt such that the outer surface of the male coupling bolt contacts the inner surface of the female coupling bolt. Device.
4. The cross coupling adjusting device according to claim 3, wherein the outer surface of the contacting male coupling bolt and the inner surface of the female coupling bolt are coated.
The female coupling bolt of claim 1, wherein the male coupling bolt is inserted into the female coupling bolt such that the adjusting bolt contacts one of the boundary surfaces of the first hole and one of the boundary surfaces of the second hole. And a guide structure is formed in the male coupling bolt.
6. The cross coupling adjusting device according to claim 5, wherein the guide structure has a structure in which a guide protrusion is formed on one of the female coupling bolt and the male coupling bolt and a guide groove is formed on the other.
The cross coupling adjusting device of claim 1, wherein a first threaded portion is formed at the first interface and a second threaded portion is formed at the second interface.
8. The cross of claim 7, wherein a rotational force of a thread of the adjustment bolt is transmitted to the first threaded portion and the second threaded portion according to the rotation of the adjustment bolt to adjust the physical length of the coupling assembly. Coupling adjustment device.
The coupling assembly of claim 1, wherein the coupling assembly to which the female coupling bolt and the male coupling bolt are coupled is coupled to a hole formed across the side wall of the filter for cross coupling, wherein the adjustment bolt is connected to the side wall of the filter. The cross coupling adjusting device is inserted into a hole formed in the longitudinal direction and penetrates the first hole and the second hole.
A female coupling bolt having a cavity formed therein and a first hole formed at one surface thereof; a male couple inserted into a cavity formed at the female coupling bolt and having a second hole corresponding to the first hole formed at one surface thereof; A ring bolt; a first boundary surface which is inserted into the female coupling bolt and the male coupling bolt through the first hole and the second hole, and which is one of the boundary surfaces of the first hole, and one of the boundary surfaces of the second hole; And a adjusting bolt in contact with a second boundary surface, wherein a first threaded portion is formed at the first boundary surface and a second threaded portion is formed at the second boundary surface, and the female coupling bolt is rotated by the adjustment bolt. A coupling assembly in which the female coupling bolt and the male coupling bolt are coupled by moving in the first direction and moving the male coupling bolt in a second direction opposite to the first direction. Cross coupling adjusting device, characterized in that the physical length of the sieve is adjusted.
A cavity coupling bolt formed therein and a first hole formed on one surface thereof, and a first threaded portion formed on one surface of an interface of the first hole; a female coupling bolt inserted into a cavity formed in the female coupling bolt, A male coupling bolt of which a solid structure is partially cut and a second threaded portion is formed on one surface of the cutting surface; inserted into the female coupling bolt through the first hole and the first threaded portion and the second threaded portion And a threaded adjustment bolt in contact with the portion, the threaded portion having grooves and protrusions repeated on at least a portion of the side portion, wherein the female coupling bolt is moved in a first direction by the rotation of the adjustment bolt. Of the coupling assembly to which the female coupling bolt and the female coupling bolt are coupled by moving a in a second direction opposite to the first direction. Cross-coupling adjuster characterized in that the physical length is adjustable.
The RF cavity filter of claim 1, wherein the cross coupling regulating device of claim 1 is coupled to a side wall defining a cavity.
13. The RF cavity filter of claim 12, wherein a portion of the side wall to which the cross coupling adjusting device is coupled is made of a dielectric material.