WO2022080858A1 - 캐비티 필터 조립체 - Google Patents
캐비티 필터 조립체 Download PDFInfo
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- WO2022080858A1 WO2022080858A1 PCT/KR2021/014118 KR2021014118W WO2022080858A1 WO 2022080858 A1 WO2022080858 A1 WO 2022080858A1 KR 2021014118 W KR2021014118 W KR 2021014118W WO 2022080858 A1 WO2022080858 A1 WO 2022080858A1
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- Prior art keywords
- cavity
- filter body
- filter
- resonance bar
- resonance
- Prior art date
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- 238000012937 correction Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 41
- 238000009434 installation Methods 0.000 claims description 26
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- 238000005192 partition Methods 0.000 claims description 10
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- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 13
- 239000002184 metal Substances 0.000 description 7
- 238000006880 cross-coupling reaction Methods 0.000 description 4
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- 238000001914 filtration Methods 0.000 description 2
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- 239000003989 dielectric material Substances 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities
- H01P1/2053—Comb or interdigital filters; Cascaded coaxial cavities the coaxial cavity resonators being disposed parall to each other
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/007—Manufacturing frequency-selective devices
Definitions
- the present invention relates to a cavity filter assembly (CAVITY FILTER ASSEMBLY), and more particularly, to a cavity filter assembly capable of reducing the overall weight of an antenna device and reducing cost.
- CAVITY FILTER ASSEMBLY a cavity filter assembly capable of reducing the overall weight of an antenna device and reducing cost.
- the antenna device includes a main board on which power supply components and a plurality of RF filters are mounted, and a plurality of antenna elements that are stacked and disposed to be spaced apart from the main board, a plurality of antenna elements serving as a radiating element on the front surface are mounted, and a plurality of and an antenna board stacked on the front end of the RF filter.
- FIG. 1 is an exploded perspective view showing a cavity filter assembly according to the prior art and a cross-sectional view taken along line A-A in an assembled state.
- a cavity filter is a type of RF filter that is used most recently because it is easy to perform frequency tuning and assembly to a main board.
- the cavity filter 1 is formed long in the longitudinal direction, and a filter body formed in the shape of a metallic enclosure having a predetermined space (hereinafter referred to as a cavity) (C) therein. (10) and a plurality of resonator installation bosses 15 provided to be spaced apart from each other on the bottom surface of the cavity C of the filter body 10, and a plurality of resonators 20 respectively installed on the resonator installation boss 15 do.
- a cavity hereinafter referred to as a cavity
- resonator installation bosses 15 provided to be spaced apart from each other on the bottom surface of the cavity C of the filter body 10
- a plurality of resonators 20 respectively installed on the resonator installation boss 15 do.
- the cavity filter 1, as shown in FIG. 1, is coupled in a form to cover the open side of the cavity C formed in the filter body 10, and the cavity ( C) further includes a filter cover 30 in which the tuning rudder part 31 is formed to facilitate internal frequency tuning.
- the tuning rudder part 31 formed on the filter cover 30 is processed and formed on the outer surface of the filter cover 30 , and is processed to be relatively thinner than the thickness of the filter cover 30 , and is tuned in the middle of the rudder leg part 31 . Since the correction hole 35 is formed, the frequency tuning designer can easily correct the erroneously performed rudder angle by using a predetermined insertion tool (not shown).
- the plurality of resonators 20 screw the resonator bar 21 and the resonator bar 21 with respect to the resonator installation boss 15 through the inside of the resonator bar 21 , and perform primary frequency tuning as will be described later. and a tuning screw 23 that performs
- the frequency tuning of the cavity filter 1 is primarily performed by adjusting the height in the cavity C of the resonance bar 21 through the tuning screw 23 of the resonance bar 21 to adjust the peripheral configuration (for example, , the frequency tuning is performed by adjusting the distance from the filter cover 30), and secondarily, the rudder angle 31 of the filter cover 30 positioned to correspond to the upper side of each resonator 20 is cut with a predetermined rudder angle tool ( Detailed adjustment of the frequency tuning can be made according to the amount of rudder rudder from the outside to the inside by using (not shown).
- the resonator installation boss 15 must be formed inside the filter body 10 in order to install the resonance bar 21 , and the filter body 10 .
- the tuning screw 23 there is a limitation in the manufacturing method of the antenna, in that the tuning screw 23 must be provided, which increases the weight of the overall antenna device and causes an increase in the cost of parts.
- the present invention has been devised to solve the above technical problem, and an object of the present invention is to provide a cavity filter assembly capable of reducing the overall weight of an antenna device.
- Another object of the present invention is to provide a cavity filter assembly that can reduce costs by eliminating some of the components of the cavity filter assembly.
- the cavity filter assembly is formed in a cylindrical shape with an open side and a filter body having a cavity having a predetermined space therein, and is moved from one open side to the other side to close the filter body inside. and at least one resonance bar installed on the filter body so that the other side of the filter body is introduced and positioned, wherein the resonance bar is a front end surface of the closed other side and is parallel to the bottom surface of the filter body for frequency tuning in the cavity
- a rudder angle part which is a protruding surface protruding toward the cavity, is formed, and a tuning correction hole passing through the rudder angle part is formed.
- frequency tuning in the cavity may be performed through the striking angle of the striking angle on the outside of the filter body, and the tuned frequency may be corrected through the tuning correction hole.
- the frequency tuning in the cavity may be performed by an operation in which the rudder angle part of the resonance bar is embossed into the cavity by a rudder tool inserted into the resonance bar from the outside of the filter body and the shape is deformed.
- the rudder angle of the resonance bar is outside the cavity by a pulling tool inserted into the resonance bar from the outside of the filter body and then inserted into the cavity through the tuning correction hole It can be performed as an operation that is pulled to and deformed in shape.
- the filter body may further include a filter cover coupled along an edge of the filter body to form the cavity together with the filter body.
- a resonance bar installation hole for installing the resonance bar may be formed in the filter body, and a coupling flange that is closely coupled to an outer surface of an edge of the resonance bar installation hole may be formed in the resonance bar.
- the tuning correction hole may be formed in the form of a hole having a predetermined diameter at the center of the rudder angle portion.
- a plurality of cavities may be provided by a partition wall that partially partitions between adjacent resonance bars among the at least one resonance bar or a window in which a part of the partition wall is cut.
- the cavity may be defined by the filter body manufactured by a molding method to have a housing shape with one side open, and a filter cover manufactured by a press method to cover the open side of the filter body.
- the opened one side of the filter body may be a portion opposite to the other side on which the at least one resonance bar is installed.
- the cavity is coupled along the edge end of the filter body and the filter body manufactured by the molding method to have a flat plate shape, but a deep drawing press method to have a housing shape in which a portion corresponding to the filter body side is opened. It can be defined by the filter cover made of
- the cavity is formed by the filter body manufactured by an extrusion method so that one end and the other end in the longitudinal direction are opened, and one end cover and the other end cover covering the opened longitudinal end and the other end of the filter body. can be defined.
- the resonance bar may be manufactured by a deep drawing press method.
- the cavity filter assembly defines a cavity causing resonance, forms at least a bottom surface of the cavity, and at least one resonance bar installation hole penetrating inside and outside the filter body, the filter
- the cavity is defined together with the body, and a portion of the space inside the cavity defined by the filter body and the filter cover is provided through a filter cover that shields an open portion of the filter body and a resonance bar installation hole of the filter body. and at least one resonance bar which is installed to point and performs frequency tuning through deformation of the protruding surface of the tip inside the cavity.
- the fixed screw and the resonator installation boss which are major components of the conventional cavity filter, can be eliminated, the overall weight and component cost of the antenna device can be reduced.
- the shape of the filter body can be simplified, it has the effect of improving the productivity of bar products that can pursue diversification of manufacturing methods of the filter cover and the resonator including the filter body.
- FIG. 1 is an exploded perspective view showing a cavity filter assembly according to the prior art and a cross-sectional view taken along line A-A in an assembled state;
- FIG. 2 is an upward perspective view and a downward perspective view showing a cavity filter assembly according to a first embodiment of the present invention
- FIG. 3 is an exploded perspective view showing a state in which the filter cover is separated from the configuration of FIG. 2;
- FIG. 4 is an exploded perspective view for explaining the coupling implementation by the cavity filter assembly according to the first embodiment of the present invention
- FIG. 5 is a cutaway perspective view for explaining the operation of the input-side notch bar and the output-side notch bar in the configuration of FIG. 4;
- 6A and 6B are a bottom exploded perspective view and an upward exploded perspective view showing a state in which the filter cover and the resonance bar are separated in the configuration of FIG. 2;
- FIG. 7 is a vertical cross-sectional view of FIG. 2 and a partially enlarged view thereof;
- FIG. 8 is a vertical cross-sectional cutaway view of FIG. 2 and a partially enlarged view thereof;
- 9A and 9B are respectively exploded perspective views and cross-sectional views of a cavity filter assembly according to the second and third embodiments of the present invention.
- cavity filter assembly 110 filter body
- coupling flange 130 filter cover
- FIG. 2 is an upward perspective view and a downward perspective view showing a cavity filter assembly according to a first embodiment of the present invention
- FIG. 3 is an exploded perspective view showing a state in which the filter cover is separated during the configuration of FIG. 2
- FIG. 4 is a perspective view of the present invention It is an exploded perspective view for explaining the implementation of the coupling by the cavity filter assembly according to the first embodiment
- FIG. 5 is a cut-away perspective view for explaining the operation of the input side notch bar and the output side notch bar in the configuration of FIG. 4
- FIGS. 6A and 6A and 6B is a bottom exploded perspective view and an upward exploded perspective view illustrating a state in which the filter cover and the resonance bar are separated in the configuration of FIG. 2 .
- a filter body 110 having a cavity (Cavity, C) that is a predetermined space therein, and a filter At least one resonance bar 120 provided for frequency filtering in the cavity C of the body 110 may be included.
- the at least one resonance bar 120 may be installed in the filter body 110 such that one side is formed in an open cylindrical shape, and the other side closed to the inside of the filter body 110 is introduced and positioned.
- the outer shape of the resonance bar 120 is not necessarily limited to a perfect cylindrical shape, and includes a cylindrical shape in which the diameter gradually decreases toward the other closed side.
- the diameter of one open side of the resonance bar 120 may be larger than the diameter of the other closed side (rudder angle part 124 to be described later).
- the cavity filter assembly 100 according to the first embodiment of the present invention, as shown in FIGS. 2 to 4B, a filter manufactured by a molding method such that the cavity C has a housing shape with one open side. It can be understood as a space defined by the body 110 and the filter cover 130 manufactured by a press method so as to cover an open side of the filter body 110 .
- the cavity C may be defined differently from the cavity filter assembly 100 according to the first embodiment described above, as in the second and third embodiments to be described later.
- a plurality of cavities C may be provided inside the filter body 110 to be partitioned into a number corresponding to the number of the plurality of resonance bars 120 in general.
- seven resonance bars 120 are located in the cavity C of the filter body 110 .
- the seven resonance bars 120 implement coupling characteristics during the process of transferring the electrical signal supplied from the input connector 111a on one side to the adjacent resonance bar 120, and the output connector 111b on the other side. It is provided to output an electrical signal through the.
- the partition wall 113 formed to partition the cavity C by the number of the resonance bars 120 and a part of the partition wall 113 are cut A frequency band to be filtered can be precisely controlled by the window 114 in the form of a sieve.
- the filter body 110 is provided to have a rectangular parallelepiped outer shape elongated in the longitudinal direction, as shown in FIGS. 3 and 4 , and inside
- the seven cavities C are formed by the partition wall 113 and the window 114 integrally formed (or separately manufactured and installed), and each cavity ( It is placed in C) and functions as seven resonators.
- Such a filter body 110 may be manufactured by a molding method.
- the molding material of the filter body 110 may include a non-conductive resin material such as plastic.
- a metal film is applied to the inner surface forming the cavity C so that coupling characteristics according to an electrical signal in the cavity C can be realized, so that the cavity C and It may be provided so that electromagnetic waves between the outside are completely blocked.
- a plurality of resonance bar installation hole ( 115) may be processed into a circular shape.
- the plurality of resonance bar installation holes 115 may be formed to be stepped so that the edge portion of the resonance bar 120 is caught in close contact with each other.
- the front end surface of the resonance bar 120 is parallel to the bottom surface of the filter body 110 in the cavity C for frequency tuning in the cavity C filter body 110 .
- An angled portion 124 that is a protruding surface protruding from the bottom surface of the cavity (C) to the side (more preferably, the open side of the filter body 110) is formed.
- the resonance bar 120 is approximately formed in a cylindrical shape that is opened to the outside (one side) of the filter body 110 , and when inserted through the resonance bar installation hole 115 of the filter body 110 , an empty inside is a cavity (C) ), and may be closely coupled to the resonance bar installation hole 115 in which the edge end of the open side of the resonance bar 120 is stepped.
- a coupling flange 127 may be formed in the resonance bar 120 to be closely coupled to the outer surface of the rim of the resonance bar installation hole 115 formed in a terminal shape.
- the coupling flange 127 and the resonance bar installation hole 115 may be closely coupled in various ways, and it is natural that bonding coupling using a bonding material is typically possible.
- the rudder part 124 is engraved into the cavity C when it is engraved with a predetermined external force after being inserted through the hollow inside of the resonance bar 120 from the outside of the filter body 110 using a rutting tool (not shown). It may be a configuration in which frequency tuning in the cavity C is performed as a modified operation. That is, according to the rudder angle of the rudder angle part 124, secondary frequency tuning in the cavity C may be performed.
- a tuning correction hole 125 penetrating the rudder angle part 124 may be further formed.
- the tuning correction hole 125 is a pulling tool (Pulling) of the opposite concept to the rudder angle tool when correction of frequency tuning is required when the rudder angle part 124 is ruddered into the cavity (C) by using a rudder angle tool to change the shape. (not shown) may be formed to re-correct the tuned frequency tuning state by adjusting the rudder angle.
- the tuning correction hole 125 may be formed in the form of a hole having a predetermined diameter at the center of the rudder angle portion 124 .
- the tuning correction hole 125 is the size of the limit at which the rudder angle portion 124 is secured wider than the above minimum area. It is preferable to have
- the pulling tool protrudes toward the cavity (C) through the tuning correction hole 125 and is then caught on the cavity (C) side edge of the tuning correction hole 125.
- the pulling tool caught in the rim of the tuning correction hole 125 is pulled to the outside (that is, in the open one direction of the resonance bar 120)
- the shape is deformed inside the cavity (C) by being struck by the rudder tool.
- the rudder angle part 124 is pulled back to its original position so that it is possible to correct the frequency tuning while correcting it in a direction to reduce the rudder angle amount.
- the cavity filter assembly 100 according to the first embodiment of the present invention, as described above, the open side of the filter body 110 (resonance bar 120 based on the resonance bar 120) It may further include a filter cover 130 provided to cover the closed other side).
- the filter cover 130 may be manufactured by a press method.
- the filter cover 130 may be made of a metal material.
- the manufacturing method of the filter cover 130 is not limited by the press method.
- the filter cover 130 like the filter body 110, may be manufactured by a molding method, and in this case, includes a plastic resin molding material, and when manufactured with a plastic resin molding material, the cavity ( C) It will be natural that a film of a metal material may be formed to block internal and external electromagnetic waves.
- the filter cover 130 is coupled to cover the open one side of the filter body 110, as shown in FIGS. 6A and 6B, thereby implementing a frequency characteristic (ie, a coupling characteristic) cavity ( C) defines the inner space, and serves to block the filter body 110 so that the influence of the external electromagnetic wave environment is minimized.
- a frequency characteristic ie, a coupling characteristic
- C defines the inner space, and serves to block the filter body 110 so that the influence of the external electromagnetic wave environment is minimized.
- the electrical signal input through the input connector 111a sequentially passes through a plurality of resonance bars 120a to 120g provided to be spaced apart in a straight line inside the filter body 110, and after performing frequency filtering, the output connector It is output through (111b).
- the resonance bars 120a to 120g are arranged in a straight line in one direction as in the cavity filter assembly 100 according to the first embodiment of the present invention, the adjacent coupling between the adjacent resonance bars can be smoothly implemented.
- cross-coupling is implemented while an input electrical signal is transferred to a resonance bar that has skipped one or more adjacent resonance bars (or cavities), and the resonance bars 120a to 120g (or cavities) are This is because it is difficult to design such a structure when it is arranged in a straight line for a long time.
- the cavity filter assembly 100 according to the first embodiment of the present invention, as shown in FIGS. 4 and 5 , the first resonance bar 120a, in which the input connector 111a is formed at a very short resonator, and It is designed to be positioned between the second resonance bar 120b adjacent thereto, and the position where the output connector 111b is formed is located between the seventh resonance bar 120g, which is an end resonator, and the sixth resonance bar 120f adjacent thereto.
- the front ends of the input connector 111a and the output connector 111b may be exposed to protrude into the cavity C through an input porthole (not indicated) and an output porthole (not indicated), respectively.
- the cavity filter assembly 100 is electrically connected to the input connector 111a as shown in FIGS. 4 and 5, and one end of the cavity filter assembly 100 is a first resonance bar 120a.
- the other end is located in the cavity corresponding to the second resonance bar (120b), the input side metal notch notch bar 141 located in the cavity, and one end is located in the cavity corresponding to the seventh resonance bar (120g), , the other end may include an output-side metal notch bar 142 positioned in a cavity corresponding to the sixth resonance bar 120f.
- the input-side metal notch bar 141 implements cross-coupling while passing the dry signal input through the input connector 111a to the second resonance bar 120b by skipping one of the first resonance bars 120a.
- a specific notch (more specifically, L-notch) is formed at the right end of the pass band, and the output-side metal notch bar 142 transmits an electrical signal passing through the sixth resonance bar 120f to the seventh resonance bar ( 120g)
- a specific notch (more specifically, C-notch) may be formed at the left end of the pass band by implementing cross coupling while skipping one and outputting to the output connector 111b.
- the input-side metal notch bar 141 is shorted so as to be in direct contact with the structure in the cavity C.
- an L-notch is formed at the right end of the pass band
- the output-side metal notch bar 142 is a bar pass provided to be opened via a Teflon block 143 provided with a dielectric material to prevent direct contact with the structure of the cavity C, as shown in FIGS. 4 and 5 . It will form a C-notch at the left end of the band.
- FIG. 7 is a vertical cross-sectional view of FIG. 2 and a partially enlarged view thereof
- FIG. 8 is a vertical cross-sectional view of FIG. 2 and a partially enlarged view thereof.
- the cavity filter assembly 100 into the cavity C defined by the filter body 110 and the filter cover 130 .
- a plurality of resonance bars 120 are inserted and installed, and the frequency tuning in the cavity C is performed by inserting a rudder angle tool through the empty inner space of the resonance bar 120 to adjust the rudder angle amount of the rudder angle part 124.
- the plurality of resonance bars 120 are installed so that the coupling flanges 127 are in contact with and coupled to the outer edge ends of the plurality of resonance bar installation holes 115 formed in the filter body 110 , and are opened to one side.
- it is provided in a cylindrical shape, it is possible to rudder the rudder angle portion 124 by using a rudder angle tool through the open portion.
- the cavity filter assembly 100 according to the first embodiment of the present invention is different from the rutting direction of the cavity filter assembly 1 according to the prior art illustrated in FIG.
- the bar is provided so that the frequency tuning in the cavity C can be performed through shape deformation.
- the resonance bar installation boss (refer to reference numeral 15 in FIG. 1) for installing the resonance bar (refer to reference numeral 21 in FIG. 1) .
- the filter body 10 when the resonance bar installation boss (refer to reference numeral 15 in FIG. 1 ) is integrally provided with the filter body 10 , the filter body
- the manufacturing method of (10) has no choice but to use the molding method, and there is a limit to the manufacture of the extrusion method or the press method due to the shape of the resonance bar installation boss 15 .
- the frequency tuning in the cavity C in the filter cover 30 among the configuration of the cavity filter assembly 1 according to the prior art illustrated in FIG. 1 .
- the filter cover 130 is manufactured by simplifying the shape of the filter cover 130 in that the rudder part 31 for frequency tuning is not formed and only functions to shield the cavity C. can be diversified.
- the filter cover 130 can be manufactured by extrusion (refer to the third embodiment of the present invention) or a deep drawing press method (including a general press method) (refer to the second embodiment of the present invention).
- the resonance bar 120 may be manufactured by a deep drawing press method.
- the deep drawing press method is, as is well known, an advantageous method for manufacturing a molded product of a cylindrical shape (or a shape on a rectangular surface) with only one side open using a punch mechanism while mounting a plate on a die.
- 9A and 9B are respectively exploded perspective views and cross-sectional views of a cavity filter assembly according to the second and third embodiments of the present invention.
- a cavity C for substantially implementing frequency characteristics is a filter body having an open shape on one side. It is defined by 110 and the filter cover 130 coupled to cover the open one side of the filter body 110, but the cavity C is not necessarily defined according to the first embodiment.
- the cavity C has a filter body 110a manufactured by a molding method to have a flat plate shape and an edge end of the filter body 110a. It can be defined by the filter cover 130a manufactured by the deep drawing press method so that the portion corresponding to the filter body 110a side has an open housing shape. Since the filter cover 130a itself can be manufactured by the deep drawing press method, the productivity of the product can be greatly improved.
- the cavity C has a filter body 110b manufactured by an extrusion method such that one end and the other end in the longitudinal direction are opened, and the filter body It may be defined by the one end cover 110b-1 and the other end cover 110b-2 covering the opened longitudinal end and the other end of the 110b.
- the filter cover 130 itself substantially covering the open side of the cavity C can be removed, and the filter cover 110b can be easily extruded through the extrusion method. Since it can be manufactured, the productivity of the product can be greatly improved.
- the resonance bar 20 is fixed using a separate tuning screw 23 . Since there is no need for tuning or primary frequency tuning, the tuning screw 23 is not needed from the beginning, and part of the component configuration can be deleted. As described above, it will be natural that an effect of reducing the manufacturing cost of the product can also be achieved through the effect of reducing the cost of parts due to the deletion of the component configuration.
- the cavity filter assembly according to the first to third embodiments of the present invention may be defined as follows.
- the cavity filter assembly defines a cavity (C) causing resonance and also forms a bottom surface of the cavity (C), and at least one resonance bar penetrating inside and outside is installed
- a filter body 110 having a hole 115 formed therein, a filter cover 130 defining a cavity C together with the filter body 110 and shielding an open portion of the filter body 110, and a filter body ( It is installed to occupy a part of the space inside the cavity C defined by the filter body 110 and the filter cover 130 through the resonance bar installation hole 115 of the 110), and the tip protruding surface inside the cavity (C)
- It may be defined as a structure including at least one resonance bar 120 in which frequency tuning is performed through deformation of (eg, the rudder angle part 124 ).
- the shape of the tuning rudder formed in the filter cover for frequency tuning in the cavity (C) and changing the tuning screw in the case of the prior art, only the tip protrusion surface (rudder angle part 124) of the resonance bar 120 is changed for frequency tuning in the cavity C, in the prior art and the difference in frequency tuning method.
- the present invention eliminates the fixed screw and the resonator installation boss, which are the main components of the conventional cavity filter, thereby reducing the overall weight and component cost of the antenna device, and simplifying the shape of the filter body. To provide a cavity filter assembly that improves productivity of products by pursuing diversification of manufacturing methods.
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Abstract
Description
Claims (14)
- 내부에 소정의 공간인 캐비티를 가진 필터 바디; 및일측이 개방된 원통 형상으로 형성되되, 개방된 일측으로부터 타측으로 이동되어 상기 필터 바디의 내측으로 폐쇄된 타측이 유입되어 위치되도록 상기 필터 바디에 설치되는 적어도 하나의 공진 바; 를 포함하고,상기 공진 바는, 상기 폐쇄된 타측의 선단면으로서 상기 캐비티 내의 주파수 튜닝을 위하여 상기 필터 바디의 바닥면과 평행되게 상기 캐비티 측으로 돌출된 돌출면인 타각부를 형성함과 아울러 상기 타각부를 관통하는 튜닝 수정홀이 형성된, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 공진 바는, 상기 필터 바디의 외측에서 상기 타각부의 타각을 통해 상기 캐비티 내의 주파수 튜닝이 수행되고, 상기 튜닝 수정홀을 통해 상기 튜닝된 주파수의 수정이 가능한, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 캐비티 내의 주파수 튜닝은,상기 필터 바디의 외측에서 상기 공진 바 내측으로 삽입되는 타각 공구에 의하여 상기 공진 바의 타각부가 상기 캐비티 내부로 타각되어 형상 변형되는 동작으로 수행되는, 캐비티 필터 조립체.
- 청구항 3에 있어서,상기 캐비티 내의 주파수 튜닝의 수정은, 상기 필터 바디의 외측에서 상기 공진 바 내측으로 삽입된 후 상기 튜닝 수정홀을 통해 상기 캐비티 내부로 삽입되는 풀링 공구에 의하여 상기 공진 바의 타각부가 상기 캐비티 외측으로 당김되어 형상 변형되는 동작으로 수행되는, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 필터 바디의 테두리 부위 단부를 따라 결합되어 상기 필터 바디와 함께 상기 캐비티를 형성하는 필터 커버; 를 더 포함하는, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 필터 바디에는 상기 공진 바의 설치를 위한 공진바 설치홀이 형성되고,상기 공진 바에는 상기 공진바 설치홀의 테두리 외면에 밀착 결합되는 결합 플랜지가 형성된, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 튜닝 수정홀은, 상기 타각부의 중심에 소정의 직경을 가지는 홀 형태로 형성된, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 캐비티는, 상기 적어도 하나의 공진 바 중 인접하는 공진 바들 사이를 일부 구획하는 격벽 또는 상기 격벽의 일부가 절개된 형태의 윈도우에 의하여 다수 개로 구비된, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 캐비티는, 일측이 개구된 함체 형상을 가지도록 몰딩 공법으로 제조된 상기 필터 바디와 상기 필터 바디의 개구된 일측을 덮도록 프레스 공법으로 제조된 필터 커버에 의하여 정의되는, 캐비티 필터 조립체.
- 청구항 9에 있어서,상기 필터 바디의 개구된 일측은, 상기 적어도 하나의 공진 바가 설치되는 타측과 대향되는 부위인, 캐비티 필터 조립체.
- 청구항 1에 있어서,상기 캐비티는, 평판 형상을 가지도록 몰딩 공법으로 제조된 상기 필터 바디와 상기 필터 바디의 테두리 단부를 따라 결합되되 상기 필터 바디 측에 해당하는 부위가 개구된 함체 형상을 가지도록 딥드로잉 프레스 공법으로 제조되는 필터 커버에 의하여 정의되는, 캐비티 필터.
- 청구항 1에 있어서,상기 캐비티는, 길이방향 일단부와 타단부가 개구되도록 압출 공법으로 제조된 상기 필터 바디와, 상기 필터 바디의 개구된 길이방향 일단부 및 타단부를 덮는 일측단 커버 및 타측단 커버에 의하여 정의되는, 캐비티 필터 조립체.
- 청구항 9 내지 청구항 12 중 어느 한 항에 있어서,상기 공진 바는, 딥드로잉 프레스 공법으로 제조되는, 캐비티 필터 조립체.
- 공진을 일으키는 캐비티를 정의함과 아울러 상기 캐비티의 적어도 바닥면을 형성하며, 내외부로 관통하는 적어도 하나의 공진바 설치홀이 형성된 필터 바디;상기 필터 바디와 함께 상기 캐비티를 정의하고, 상기 필터 바디 중 개구된 부위를 차폐하는 필터 커버; 및상기 필터 바디의 공진바 설치홀을 통해 상기 필터 바디 및 상기 필터 커버에 의하여 정의된 상기 캐비티 내부의 공간 일부를 점하도록 설치되고, 상기 캐비티 내부의 선단 돌출면의 변형을 통해 주파수 튜닝이 이루어지는 적어도 하나의 공진 바; 를 포함하는, 캐비티 필터 조립체.
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100001571A (ko) * | 2008-06-27 | 2010-01-06 | 주식회사 에이스테크놀로지 | Rf 필터의 공진기 제조 방법 및 그 공진기를 구비한 rf필터 |
KR20130098205A (ko) * | 2012-02-27 | 2013-09-04 | 주식회사 케이엠더블유 | 캐비티 구조를 가진 무선 주파수 필터 |
KR101380343B1 (ko) * | 2012-10-16 | 2014-04-02 | 주식회사 이너트론 | 조립식 듀플렉서 |
US20160204493A1 (en) * | 2014-10-28 | 2016-07-14 | Kmw Inc. | Radio frequency filter with cavity structure |
KR20170040642A (ko) * | 2015-10-05 | 2017-04-13 | 주식회사 케이엠더블유 | Rf 필터 튜닝시스템 및 그를 이용한 필터 제조방법 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100001571A (ko) * | 2008-06-27 | 2010-01-06 | 주식회사 에이스테크놀로지 | Rf 필터의 공진기 제조 방법 및 그 공진기를 구비한 rf필터 |
KR20130098205A (ko) * | 2012-02-27 | 2013-09-04 | 주식회사 케이엠더블유 | 캐비티 구조를 가진 무선 주파수 필터 |
KR101380343B1 (ko) * | 2012-10-16 | 2014-04-02 | 주식회사 이너트론 | 조립식 듀플렉서 |
US20160204493A1 (en) * | 2014-10-28 | 2016-07-14 | Kmw Inc. | Radio frequency filter with cavity structure |
KR20170040642A (ko) * | 2015-10-05 | 2017-04-13 | 주식회사 케이엠더블유 | Rf 필터 튜닝시스템 및 그를 이용한 필터 제조방법 |
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