WO2020027355A1

WO2020027355A1 - High-pass filter

Info

Publication number: WO2020027355A1
Application number: PCT/KR2018/008811
Authority: WO
Inventors: 여선구
Original assignee: 주식회사 엘트로닉스
Priority date: 2018-08-01
Filing date: 2018-08-02
Publication date: 2020-02-06
Also published as: KR101939989B1; CN112514156B; CN112514156A

Abstract

A high-pass filter is disclosed. A high-pass filter disclosed according to one embodiment comprises: a base plate made of a conductive material; and one or more resonating poles which extend in parallel with the base plate at a front end of the base plate, are integrally formed with the base plate, are bent with respect to the base plate, and are configured to form resonance in a frequency band in which the high-pass filter is used.

Description

High frequency filter

Embodiments of the present invention relate to a high frequency filter.

In general, high frequency filters are used in most transmission and reception communication equipment, such as a mobile communication base station or a repeater. Among them, a cavity filter having a cavity structure is mainly used for a device requiring high power, such as a mobile communication base station. The cavity filter has a structure in which a plurality of cavities are formed inside the filter and a resonator is installed in the cavity, and the filter performs filtering through resonance in each cavity. Conventional cavity filters for base stations are bulky, heavy and expensive.

An embodiment of the present invention is to provide a high frequency filter that minimizes the volume and is simple to manufacture.

A high frequency filter according to an embodiment of the present disclosure, a high frequency filter, the base plate of a conductive material; And at least one resonance extending in parallel with the base plate at a front end of the base plate, integrally provided with the base plate, bent with the base plate, and configured to form a resonance in a frequency band used by the high frequency filter. Includes Paul.

The high frequency filter may further include a first side plate extending in parallel with the base plate at a rear end of the base plate and integrally provided with the base plate and being bent with the base plate.

The high frequency filter may further include one or more first cutting slits provided by cutting a part of the base plate at a boundary between the base plate and the first side plate.

The high frequency filter may include: a first finishing plate extending in one direction of the base plate at one end of the base plate and integrally provided with the base plate and bent with the base plate; And a second finishing plate extending from the other end of the base plate in the other direction of the base plate and integrally provided with the base plate and being bent with the base plate.

The high frequency filter may include at least one 2-1 cutting slit formed by cutting a portion of the base plate at a boundary between the base plate and the first finishing plate; And at least one 2-2 cutting slit formed by cutting a portion of the base plate at a boundary between the base plate and the second finishing plate.

The high frequency filter may include an input terminal unit provided in parallel with the first closing plate at one side of a resonance pole closest to the first closing plate and receiving a signal; And an output terminal unit provided at the other side of the resonant pole closest to the second closing plate in parallel with the second closing plate and outputting a signal filtered through the resonant pole.

The high frequency filter may include: a first insertion hole provided in one of the base plate, the first side plate, and the first finishing plate, and configured to insert the input terminal part to be drawn out of the high frequency filter; And a second insertion hole provided in any one of the base plate, the first side plate, and the second finishing plate, and allowing the output terminal portion to be inserted and drawn out of the high frequency filter.

The high frequency filter extends in parallel with the first side plate at a rear end of the first side plate and is integrally provided with the first side plate, and is bent with the first side plate. It may further include a second side plate provided to be parallel to the base plate at the top of the.

The high frequency filter extends in parallel with the second side plate at a rear end of the second side plate and is integrally provided with the second side plate, and is bent with the second side plate. It may further include a third side plate provided to be parallel to the first side plate in front of the side plate.

The high frequency filter may include a gap adjuster provided at a position corresponding to the resonance pole on the second side plate and provided to adjust a distance from the resonance pole; And a coupling adjuster provided to be positioned between the resonance poles in the second side plate, and configured to adjust an electrical coupling amount between the resonance poles.

The high frequency filter may include a first side plate provided at a rear end of the base plate to be perpendicular to the base plate; A second side plate disposed in parallel with the base plate at an upper portion of the base plate, and disposed perpendicular to the first side plate; And a spacing adjuster provided at a position corresponding to the resonating pole in the second side plate and provided to adjust a spacing with the resonating pole.

The gap adjusting part includes a first slit and a first bar, wherein the first slit has one end of the first bar connected to the second side plate and excludes one end of the first bar. The other part of the second side plate is removed to be spaced apart from the second side plate, and when the external force is applied, the first bar is bent upwardly or downwardly according to the direction of the external force and the resonance pole The spacing of may be provided to be adjusted.

The high frequency filter may include a first side plate provided at a rear end of the base plate to be perpendicular to the base plate; A second side plate disposed in parallel with the base plate at an upper portion of the base plate, and disposed perpendicular to the first side plate; And a coupling adjuster provided to be positioned between the resonance poles in the second side plate and configured to adjust an electrical coupling amount between the resonance poles.

The coupling adjusting part includes a second slit and a second bar, wherein the second slit has one end of the second bar connected to the second side plate and the one end of the second bar. Except for the rest, the part of the second side plate is removed to be spaced apart from the second side plate, and when the external force is applied, the second bar is bent upward or downward in the direction of the external force so that the resonance poles The amount of electrical coupling between the liver may be provided to adjust.

The resonant pole is provided with a lower end of the resonant pole inside the base place at the front end of the base plate, and the high frequency filter is provided with the resonant pole at the front end of the base plate, and the resonance A third cutting slit may be further included on both sides of the pawl in which a portion of the base plate is cut along the width direction of the base plate.

The resonant pole may include a plurality of bent portions to be bent at a plurality of points along the longitudinal direction of the resonant pole.

The high frequency filter may further include a bending groove formed by cutting a portion of both sides of the resonance pole in the plurality of bending portions.

The high frequency filter may be provided at an end of the resonant pole, has a width wider than that of the resonant pole, and further includes a frequency adjusting unit for adjusting a frequency so that the resonant pole resonates in a frequency band of the high frequency filter. can do.

According to another embodiment of the present invention, a high frequency filter includes a cavity type high frequency filter including a plurality of resonant poles, and a plate provided on an upper portion of the plurality of resonant poles and forming an upper surface of the cavity; And a spacing adjusting unit provided at a position corresponding to the resonating pole in the plate and configured to adjust a spacing with the resonating pole, wherein the spacing adjusting unit includes a first slit and a first bar; The first slit may include one end of the first bar connected to the plate, and a portion of the plate may be removed from the first bar to be spaced apart from the plate. When the external force is applied, it is bent upward or downward in accordance with the direction of the external force is provided so as to adjust the distance to the resonance pole.

According to another embodiment of the present invention, a high frequency filter includes a cavity type high frequency filter including a plurality of resonant poles, and a plate provided on an upper portion of the plurality of resonant poles and forming an upper surface of the cavity; And a coupling adjuster provided at a position corresponding to the resonance poles in the plate and configured to adjust electrical coupling between the resonance poles, wherein the coupling adjuster includes a second slit and a second bar. The second slit includes one end of the second bar connected to the plate, and a portion of the plate is removed so that the remaining part of the second bar is spaced apart from the plate. When the external force is applied, the second bar is bent upward or downward in accordance with the direction of the external force to adjust the amount of electrical coupling between the resonance poles.

According to the disclosed embodiment, the high frequency filter is formed integrally with one conductive plate and each component is bent to form a cavity, so that the production of the high frequency filter is easy and the weight of the high frequency filter can be reduced. The volume of the high frequency filter can be reduced.

1 is a developed view showing a high frequency filter according to an embodiment of the present invention

2 is a perspective view showing a state in which a high frequency filter is assembled according to an embodiment of the present invention;

Figure 3 is a perspective view showing the inside of the high frequency filter according to an embodiment of the present invention

Figure 4 is a development view showing a high frequency filter according to another embodiment of the present invention

5 is a diagram illustrating a resonance graph in the case of six resonance poles in a high frequency filter according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. The following detailed description is provided to assist in a comprehensive understanding of the methods, devices, and / or systems described herein. However, this is only an example and the present invention is not limited thereto.

In describing the embodiments of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, terms to be described below are terms defined in consideration of functions in the present invention, and may be changed according to intention or custom of a user or an operator. Therefore, the definition should be made based on the contents throughout the specification. The terminology used in the description is for the purpose of describing embodiments of the invention only and should not be limiting. Unless expressly used otherwise, the singular forms “a,” “an,” and “the” include plural forms of meaning. In this description, expressions such as "comprises" or "equipment" are intended to indicate certain features, numbers, steps, actions, elements, portions, or combinations thereof, and one or more than those described. It should not be construed to exclude the presence or possibility of other features, numbers, steps, actions, elements, portions or combinations thereof.

Meanwhile, directional terms such as upper side, lower side, one side, the other side, and the like are used in connection with the orientation of the disclosed drawings. Since components of the embodiments of the present invention may be positioned in various orientations, the directional terminology is used for the purpose of illustration and not limitation.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.

1 is an exploded view showing a high frequency filter according to an embodiment of the present invention, Figure 2 is a perspective view showing a state in which a high frequency filter is assembled according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention It is a perspective view which shows the internal appearance of the high frequency filter which followed. In FIG. 3, the first side plate is omitted to show the inside of the high frequency filter. In an exemplary embodiment, the high frequency filter may be integrally formed of a conductive plate (eg, copper plate, etc.).

1 to 3, the high frequency filter 100 includes a base plate 102, a first side plate 104, a first finish plate 106, a second finish plate 108, and a resonant pole 110. , A second side plate 112, and a third side plate 114.

Here, the high frequency filter 100 may be provided such that one conductive plate is provided in the form of a developed view, and each component is bent to form a cavity filter. The high frequency filter 100 may be integrally manufactured by press sheet metal processing the conductive plate into a mold having a predetermined shape.

The base plate 102 may be a part of the bottom surface (lower surface) of the high frequency filter 100. The base plate 102 may be formed of a flat plate made of a conductive material (eg, copper). The base plate 102 may be formed in a plane having a rectangular shape having a predetermined length and width, but the shape is not limited thereto. The base plate 102 may be mounted on a substrate 50 (eg, a printed circuit board (PCB)).

The first side plate 104 may be provided to extend from the base plate 102. The first side plate 104 may extend parallel to the base plate 102 at the rear end of the base plate 102. The first side plate 104 may have a length corresponding to the base plate 102 (the length in the horizontal direction in FIG. 1).

The first side plate 104 may be provided to be bent perpendicularly to the base plate 102. To this end, a first cut slit 111 may be formed at the boundary between the base plate 102 and the first side plate 104. For example, the first cutting slit 111 may be provided by partially cutting inwards at both ends at the boundary between the base plate 102 and the first side plate 104. However, the present invention is not limited thereto, and one or more first cutting slits 111 may be provided at any point on the boundary line between the base plate 102 and the first side plate 104.

The first finishing plate 106 may be provided extending in one direction of the base plate 102 at one end of the base plate 102. The first finishing plate 106 may be provided with a width (length in the longitudinal direction in FIG. 1) corresponding to the base plate 102. The first closing plate 106 may extend in a direction perpendicular to the first side plate 104.

The first finishing plate 106 may be provided to be bent perpendicularly to the base plate 102. To this end, a 2-1 incision slit 113-1 may be formed at a boundary between the base plate 102 and the first finishing plate 106. For example, the 2-1nd cutting slit 113-1 may be provided by partially cutting inwards at both ends at a boundary between the base plate 102 and the first finishing plate 106. At one end of the base plate 102, the first cutting slit 111 and the 2-1 cutting slit 113-1 may be vertically provided.

The second closing plate 108 may be provided extending from the other end of the base plate 102 in the other direction of the base plate 102. The second finishing plate 108 may be provided with a width (length in the longitudinal direction in FIG. 1) corresponding to the base plate 102. The second closing plate 108 may extend in a direction perpendicular to the first side plate 104.

The second closing plate 108 may be provided to be bent perpendicularly to the base plate 102. To this end, a 2-2nd cutting slit 113-2 may be formed at a boundary between the base plate 102 and the second finishing plate 108. For example, the 2-2nd cutting slit 113-2 may be provided by partially cutting inwards at both ends at a boundary between the base plate 102 and the second finishing plate 108. At the other end of the base plate 102, the first cutting slit 111 and the second-2 cutting slit 113-2 may be vertically provided.

The resonant pole 110 is a portion that forms a resonance at the use frequency (ie, the filtering frequency) of the high frequency filter 100. That is, when the high frequency filter 100 is a band pass filter, the resonance pole 110 may be provided to form a resonance in the pass band. The resonance pole 110 may be provided to protrude toward the front side of the base plate 102 at the front end of the base plate 102.

The resonant poles 110 may be provided at a plurality of spaced apart from each other at the front end of the base plate 102. When a plurality of resonant poles 110 are formed, each of the resonant poles 110 may be provided spaced at a predetermined interval. Each resonating pole 110 may be provided in the form of a rod (or bar), but the shape is not limited thereto. The number of resonant poles 110 may be set to an appropriate number according to the performance of the communication system using the high frequency filter 100 and the frequency selectivity required in the communication system.

The lower end of the resonance pole 110 may be provided inside the base plate 102 at the front end of the base plate 102. To this end, a third cutting slit 115 may be provided at the front end of the base plate 102 with the resonance pole 110 interposed therebetween. The third cut slit 115 may be formed along the width direction of the base plate 102 on both side surfaces of the resonance pole 110 at the lower end of the resonance pole 110.

As such, as the third cutting slits 115 are formed at both sides of the resonant pole 110 at the lower end of each resonant pole 110, each resonant pole 110 may be bent perpendicularly to the base plate 102. It becomes possible. In addition, since the lower end of the resonance pole 110 is provided inside the base plate 102 rather than the front end of the base plate 102, when the resonance pole 110 is bent perpendicularly to the base plate 102, each resonance The pawl 110 can be positioned at the center of the cavity filter.

Each resonance pole 110 may include a plurality of bent portions 110a. Each resonant pole 110 may include a plurality of bent portions 110a that are bent at a plurality of points along the length direction of the corresponding resonant pole 110.

In an exemplary embodiment, each resonant pole 110 may be bent in a zigzag form through a plurality of bent portions 110a. That is, when the resonant poles 110 are bent at a plurality of points along the length direction of the corresponding resonant pole 110, the bent directions may be alternated. For example, the first bent portion 110a-1 may be bent perpendicularly to the base plate 102 through the third cut slit 115 at the lower end of the resonant pole 110. The second bent portion 110a-2 may be vertically bent into the base plate 102 at the end of the first bent portion 110a-1 and provided in parallel with the base plate 102. The third bent portion 110a-3 may be vertically bent at the end of the second bent portion 110a-2 and provided to be perpendicular to the base plate 102. The fourth bent portion 110a-4 may be vertically bent outwardly of the base plate 102 at the end of the third bent portion 110a-3 and provided in parallel with the base plate 102. The fifth bent part 110a-5 may be vertically bent at the end of the fourth bent part 110a-4 to be perpendicular to the base plate 102.

As described above, the resonant pole 110 is bent in a zigzag form through the plurality of bent portions 110a, so that resonance occurs in a frequency band used by the high frequency filter 100. The volume can be minimized. Here, the number of times the resonant pole 110 is bent may be appropriately selected according to the frequency band of the high frequency filter 100 used.

A bending groove 110b may be formed at an end portion of each bent portion 110a of the resonance pole 110. The bending grooves 110b may be provided at both sides of the resonance pole 110 at the ends of the bent portions 110a. Bending at the end of each bending portion 110a may be facilitated through the bending groove 110b.

The frequency adjusting unit 110c may be provided at the end of the resonance pole 110. The frequency adjusting unit 110c may serve to adjust the frequency such that the resonance pole 110 resonates in the frequency band used by the high frequency filter 100. The frequency adjusting unit 110c may be provided to extend from the end of the resonance pole 110. The frequency adjusting unit 110c may be provided to have a width wider than that of the resonance pole 110. As the area of the frequency adjusting unit 110c becomes wider, the resonant frequency of the corresponding resonating pole 110 becomes lower, so that the resonant frequency of the corresponding resonating pole 110 can be adjusted through the area of the frequency adjusting unit 110c. do.

The frequency adjusting unit 110c may be provided to be vertically bent at the end of the resonance pole 110. For example, the frequency adjusting unit 110c may be vertically bent inward of the base plate 102 at the end of the fifth bent part 110a-5 to be provided in parallel with the base plate 102.

On the other hand, the input terminal portion 121 may be provided in the resonance pole 110 adjacent to the first closing plate 106. The input terminal portion 121 may be provided to be perpendicular to the resonance pole 110 at one side of the resonance pole 110, and may be provided to be parallel to the first finishing plate 106. The first insertion hole 131 may be provided at the lower end of the first closing plate 106. When the first closing plate 106 and the resonant pole 110 are bent perpendicularly to the base plate 102, respectively, the input terminal portion 121 is inserted into the first insertion hole 131 so that the first closing plate 106 is disposed. It may protrude outward. The signal received by the antenna of the communication system may be input to the input terminal unit 121.

In addition, an output terminal unit 123 may be provided in the resonance pole 110 adjacent to the second closing plate 108. The output terminal unit 123 may be provided to be perpendicular to the resonance pole 110 at the other side of the resonance pole 110 and may be provided to be parallel to the second finishing plate 106. The second insertion hole 133 may be provided at the lower end of the second closing plate 108. When the second closing plate 108 and the resonant pole 110 are bent perpendicularly to the base plate 102, respectively, the output terminal portion 123 is inserted into the second insertion hole 133, so that the second closing plate 108 is disposed. It may protrude outward. The signal filtered through the high frequency filter 100 may be output to the output terminal 121.

Here, the first insertion hole 131 and the second insertion hole 133 into which the input terminal portion 121 and the output terminal portion 123 are inserted are formed in the first closing plate 106 and the second closing plate 108, respectively. Although the present invention is not limited thereto, the first insertion hole 131 and the second insertion hole 133 may be the base plate 102 or the first insertion hole 131 according to the drawing direction of the input terminal 121 and the output terminal 123. The side plate 104 or the third side plate 114 may be formed.

The second side plate 112 may extend from the first side plate 104. The second side plate 112 may extend parallel to the first side plate 104 at the rear end of the first side plate 104. The second side plate 112 may have a length corresponding to the first side plate 104.

The second side plate 112 may be provided to be bent perpendicularly to the first side plate 104. To this end, a fourth cut slit 117 may be formed at the boundary between the first side plate 104 and the second side plate 112. For example, the fourth cutting slit 117 may be provided by partially cutting inwards at both ends at a boundary between the first side plate 104 and the second side plate 112.

In a state where the first side plate 104 is bent perpendicularly to the base plate 102, the second side plate 112 may be bent perpendicularly to the first side plate 104. In this case, the second side plate 112 may be provided to be parallel to the base plate 102 at the top of the base plate 102.

The tuning unit 125 may be formed on the second side plate 112. The tuning unit 125 may be provided in a plurality of spaced apart from each other in the second side plate 112. The tuning unit 125 may include a gap adjusting unit 125-1 and a coupling adjusting unit 125-2.

The gap controller 125-1 may be provided at positions corresponding to the resonance poles 110 in the second side plate 112, respectively. That is, when the second side plate 112 is located above the base plate 102, the gap adjusting unit 125-1 may be provided to be positioned above the respective resonance poles 110.

The gap controller 125-1 may include a first slit 125-1a and a first bar 125-1b. The first slit 125-1a may be formed by removing a portion of the second side plate 112. Here, one end of the first bar 125-1a is connected to the second side plate 112 at one end of the first bar 125-1b, and the rest of the first bar 125-1b is It may be provided to be spaced apart from the second side plate 112.

In an exemplary embodiment, the first slit 125-1a is formed by the first bar 125-1b such that the first bar 125-1b has a bar shape (a long rectangular shape). It may be provided along the three edges of. That is, the first slit 125-1a may be provided along one side edge, the other end edge, and the other side edge of the first bar 125-1b. One end of the first bars 125-1b may be connected to the second side plate 112.

In this case, the first bar 125-1b may be lower or upper depending on the direction of the external force applied to the first bar 125-1b with one end connected to the second side plate 112. Will be bent. When the gap adjusting unit 125-1 is positioned above the resonant poles 110, the first bar 125 is bent by bending the first bar 125-1b downward or upward. -1b) and the gap between the resonance pole 110 can be adjusted.

The coupling adjusting part 125-2 may be provided between the gap adjusting parts 125-1 in the second side plate 112. That is, when the second side plate 112 is located above the base plate 102, the coupling adjusting unit 125-2 may be provided to be positioned between the resonance poles 110.

The coupling adjusting unit 125-2 may include a second slit 125-2a and a second bar 125-2b. The second slit 125-2a may be formed by removing a portion of the second side plate 112. Here, one end of the second bar 125-2b is connected to the second side plate 112 and the rest of the second bar 125-2b is formed. It may be provided to be spaced apart from the second side plate 112. The second bar 125-2b may be provided to have a smaller width than the width of the first bar 125-1b. The second bar 125-2b may have a length longer than that of the first bar 125-1b.

In an exemplary embodiment, the second slit 125-2a is a second bar 125-2b such that the second bar 125-2b is shaped like a bar (long rectangular shape). It may be provided along the three edges of. That is, the second slit 125-2a may be provided along one side edge, the other end edge, and the other side edge of the second bar 125-2b. One end of the second bars 125-2b may be connected to the second side plate 112.

In this case, the second bar 125-2b may be lower or upper depending on the direction of the external force applied to the second bar 125-2b with one end connected to the second side plate 112. Will be bent. When the coupling adjuster 125-2 is positioned between the resonant poles 110, the second bar 125-2b is bent downwardly or upwardly, thereby electrically connecting the resonant poles 110. Coupling amount can be adjusted.

As such, the tuning unit 125 adjusts the gap between the resonance pole 110 through the gap adjusting unit 125-1 and the coupling between the resonance poles 110 through the coupling adjusting unit 125-2. One or more of the above makes it possible to tune the resonance frequency of the resonance pole 110.

The third side plate 114 may extend from the second side plate 112. The third side plate 114 may extend in parallel with the second side plate 112 at the rear end of the second side plate 112. The third side plate 114 may have a length corresponding to the second side plate 112.

The third side plate 114 may be provided to be bent perpendicularly to the second side plate 112. To this end, a fifth cut slit 119 may be formed at the boundary between the second side plate 112 and the third side plate 114. For example, the fifth cutting slit 119 may be provided by partially cutting inwards at both ends at a boundary between the second side plate 112 and the third side plate 114.

With the first side plate 104 bent perpendicularly to the base plate 102 and the second side plate 112 bent perpendicularly to the first side plate 104, the third side plate 114 is It may be bent perpendicularly to the second side plate 112. The third side plate 114 may be provided to be parallel to the first side plate 104 in front of the first side plate 104.

Here, through the base plate 102, the first side plate 104, the second side plate 112, and the third side plate 114, the high frequency filter 100 is open at both ends and empty square pillars inside. It will have the form of. In addition, the first finishing plate 106 and the second finishing plate 108 are provided at one end and the other end of the base plate 102, so that the high frequency filter 100 has a form of a square pillar with both ends blocked and empty inside. To have.

According to the disclosed embodiment, the high frequency filter 100 is integrally formed with one conductive plate, and each component is bent to form a cavity, thereby making the high frequency filter 100 easy and the high frequency filter 100 ) Can reduce the weight, it is also possible to reduce the volume of the high frequency filter (100).

In other words, by pressing a sheet metal molded into a conductive plate, the high frequency filter 100 can be easily manufactured, and the high frequency filter 100 can be manufactured in large quantities. In addition, by bending the resonant pole 110 of the high frequency filter 100 several times, the volume of the high frequency filter 100 can be reduced. In this case, since the resonant frequency of the resonant pole 110 may be adjusted through the frequency adjusting unit 110c and the tuning unit 125, the volume of the high frequency filter 100 may be minimized while resonating in a desired frequency band. .

Meanwhile, in this case, the base plate 102, the first side plate 104, the first finish plate 106, the second finish plate 108, the resonant pole 110, the second side plate 112, and the first Although the three side plates 114 are formed as one conductive plate, the present invention is not limited thereto. As shown in FIG. 4, the second side plate 112 and the third side plate 114 are separately manufactured. After that, the second side plate 112 may be joined to the rear end of the first side plate 104, and the third side plate 114 may be provided to be joined to the front end of the base plate 102.

5 is a diagram illustrating a resonance graph in the case of six resonance poles in the high frequency filter according to the embodiment of the present invention.

Referring to FIG. 5, it can be seen that the high frequency filter 100 forms resonance in the 3.5 GHz band. Here, although the resonance frequency by the resonance pole 108 is shown to be 3.5GHz, the present invention is not limited thereto, and the resonance frequency may be adjusted according to the length of the resonance pole 110 and the number of bendings of the resonance pole 110. In addition, the resonance frequency may be adjusted according to the size of the frequency adjusting unit 110c formed at the end of the resonance pole 110.

In addition, the gap between the first bar 125-1b and the corresponding resonance pole 110 in the gap adjusting unit 125-1 and the amount of electrical coupling between the resonance poles 110 in the coupling adjusting unit 125-2. As such, the resonance frequency of the high frequency filter 100 may be adjusted to a desired frequency band.

Although exemplary embodiments of the present invention have been described in detail above, those skilled in the art will appreciate that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. . Therefore, the scope of the present invention should not be limited to the embodiments described, but should be defined by the claims below and equivalents thereof.

Claims

As a high frequency filter,

A base plate of conductive material; And

At least one resonating pole extending in parallel with the base plate at a front end of the base plate, integrally provided with the base plate, bent with the base plate, and configured to form a resonance in a frequency band of use of the high frequency filter. Including, a high frequency filter.
The method according to claim 1,

The high frequency filter,

And a first side plate extending in parallel with the base plate at a rear end of the base plate and integrally provided with the base plate, the first side plate being bent with the base plate.
The method according to claim 2,

The high frequency filter,

And at least one first cutout slit formed by cutting a portion of the base plate at a boundary between the base plate and the first side plate.
The method according to claim 2,

The high frequency filter,

A first finishing plate extending from one side end of the base plate in one direction of the base plate and integrally provided with the base plate and bent with the base plate; And

And a second finishing plate extending from the other end of the base plate in the other direction of the base plate and integrally provided with the base plate and being bent with the base plate.
The method according to claim 4,

The high frequency filter,

At least one 2-1 cutting slit formed by cutting a portion of the base plate at a boundary between the base plate and the first finishing plate; And

The high frequency filter of claim 1, further comprising at least one 2-2 incision slit formed by cutting a portion of the base plate at a boundary between the base plate and the second finishing plate.
The method according to claim 4,

The high frequency filter,

An input terminal unit provided at one side of the resonant pole closest to the first closing plate and parallel to the first closing plate and receiving a signal; And

And an output terminal unit provided in parallel with the second closing plate at the other side of the resonant pole closest to the second closing plate and outputting a signal filtered through the resonant pole.
The method according to claim 6,

The high frequency filter,

A first insertion hole provided in any one of the base plate, the first side plate, and the first finishing plate, the first terminal hole being inserted into and drawn out of the high frequency filter; And

And a second insertion hole provided in any one of the base plate, the first side plate, and the second finishing plate, and allowing the output terminal portion to be inserted into and drawn out of the high frequency filter.
The method according to claim 2,

The high frequency filter,

It extends in parallel with the first side plate at the rear end of the first side plate is provided integrally with the first side plate, is provided to be bent with the first side plate, when bending the base at the top of the base plate And a second side plate provided to be parallel to the plate.
The method according to claim 8,

The high frequency filter,

It extends in parallel with the second side plate at the rear end of the second side plate is provided integrally with the second side plate, is provided to be bent with the second side plate, at the front of the first side plate The high frequency filter further comprises a third side plate provided to be parallel to the first side plate.
The method according to claim 8,

The high frequency filter,

A spacing adjuster provided at a position corresponding to the resonant pole in the second side plate and provided to adjust a distance from the resonant pole; And

And a coupling adjuster provided to be positioned between the resonance poles in the second side plate, and configured to adjust an amount of electrical coupling between the resonance poles.
The method according to claim 1,

The high frequency filter,

A first side plate disposed perpendicular to the base plate at a rear end of the base plate;

A second side plate disposed in parallel with the base plate at an upper portion of the base plate, and disposed perpendicular to the first side plate; And

And a spacing adjuster provided at a position corresponding to the resonant pole in the second side plate and provided to adjust a distance from the resonant pole.
The method according to claim 11,

The gap adjusting unit includes a first slit and a first bar,

The first slit,

One end of the first bar is connected to the second side plate, and a portion of the second side plate is removed to be spaced apart from the second side plate except for the one end of the first bar.

The first bar, when an external force is applied, is bent upwards or downwards in accordance with the direction of the external force is provided so that the distance to the resonance pole is adjusted.
The method according to claim 1,

The high frequency filter,

A first side plate disposed perpendicular to the base plate at a rear end of the base plate;

A second side plate disposed in parallel with the base plate at an upper portion of the base plate, and disposed perpendicular to the first side plate; And

And a coupling adjuster provided to be positioned between the resonant poles in the second side plate and configured to adjust an amount of electrical coupling between the resonant poles.
The method according to claim 13,

The coupling adjusting unit includes a second slit and a second bar,

The second slit,

One end of the second bar is connected to the second side plate, and a portion of the second side plate is removed to be spaced apart from the second side plate except for the one end of the second bar.

The second bar is bent upwards or downwards in accordance with the direction of the external force when the external force is applied, the second bar is provided to adjust the amount of electrical coupling between the resonant poles.
The method according to claim 1,

The resonating pole is that the lower end of the resonating pole is provided inside the base place at the front end of the base plate,

The high frequency filter,

Further comprising a third incision slit which is provided at the front end of the base plate with the resonant poles interposed therebetween, and a portion of the base plate is cut along the width direction of the base plate on both sides of the resonant pole, High frequency filter.
The method according to claim 1,

The resonance pole,

And a plurality of bent portions to be bent at a plurality of points along the longitudinal direction of the resonance pole.
The method according to claim 16,

The high frequency filter,

The high frequency filter further comprises a bending groove which is provided by cutting a portion of both sides of the resonance pole in the plurality of bending portions.
The method according to claim 1,

The high frequency filter,

And a frequency adjusting unit provided at an end of the resonance pole, having a width wider than that of the resonance pole, and adjusting a frequency so that the resonance pole resonates in a use frequency band of the high frequency filter.
A cavity type high frequency filter including a plurality of resonant poles,

A plate provided on an upper portion of the plurality of resonance poles and forming an upper surface of the cavity; And

A spacing adjuster provided at a position corresponding to the resonance pole in the plate and provided to adjust an interval with the resonance pole;

The gap adjusting unit includes a first slit and a first bar,

The first slit,

One end of the first bar is connected to the plate, and a portion of the plate is removed to be spaced apart from the plate except for the one end of the first bar.

The first bar, when an external force is applied, is bent upwards or downwards in accordance with the direction of the external force is provided so that the distance to the resonance pole is adjusted.
A cavity type high frequency filter including a plurality of resonant poles,

A plate provided on an upper portion of the plurality of resonance poles and forming an upper surface of the cavity; And

A coupling adjuster provided at a position corresponding to the resonance poles in the plate and provided to adjust electrical coupling between the resonance poles;

The coupling adjusting unit includes a second slit and a second bar,

The second slit,

One end of the second bar is connected to the plate, and a portion of the plate is removed to be spaced apart from the plate except for the one end of the second bar.

The second bar is bent upwards or downwards in accordance with the direction of the external force when the external force is applied, the second bar is provided to adjust the amount of electrical coupling between the resonant poles.