WO2020080796A1 - Filtre à cavité - Google Patents

Filtre à cavité Download PDF

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Publication number
WO2020080796A1
WO2020080796A1 PCT/KR2019/013515 KR2019013515W WO2020080796A1 WO 2020080796 A1 WO2020080796 A1 WO 2020080796A1 KR 2019013515 W KR2019013515 W KR 2019013515W WO 2020080796 A1 WO2020080796 A1 WO 2020080796A1
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WO
WIPO (PCT)
Prior art keywords
terminal
elastic member
cavity filter
electrode pad
elastic
Prior art date
Application number
PCT/KR2019/013515
Other languages
English (en)
Korean (ko)
Inventor
김정회
김상융
Original Assignee
주식회사 케이엠더블유
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 케이엠더블유 filed Critical 주식회사 케이엠더블유
Priority to EP19873088.9A priority Critical patent/EP3869610A4/fr
Priority to JP2021545344A priority patent/JP7146105B2/ja
Priority to CN201980068198.8A priority patent/CN113646966B/zh
Priority to CN202310262489.9A priority patent/CN117039372A/zh
Priority claimed from KR1020190127755A external-priority patent/KR102329244B1/ko
Publication of WO2020080796A1 publication Critical patent/WO2020080796A1/fr
Priority to US17/229,869 priority patent/US11522260B2/en
Priority to JP2022149328A priority patent/JP7430230B2/ja

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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
    • H01P1/203—Strip line filters
    • 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

Definitions

  • the present invention relates to a cavity filter (CAVITY FILTER), and more particularly, to a cavity filter for a Massive MIMO antenna with improved connector fastening structure between a filter and a printed circuit board in consideration of assembly and size.
  • CAVITY FILTER cavity filter
  • MIMO Multiple Input Multiple Output
  • Transmitters transmit different data through each transmit antenna and receivers transmit data through appropriate signal processing. It is a spatial multiplexing technique. Accordingly, as the number of transmit / receive antennas is increased simultaneously, the channel capacity is increased to allow more data to be transmitted. For example, if the number of antennas is increased to 10, about 10 times the channel capacity is secured using the same frequency band compared to the current single antenna system.
  • Massive MIMO technology Up to 8 antennas are used in 4G LTE-advanced, and products with 64 or 128 antennas are currently being developed in the pre-5G stage, and base station equipment with a much larger number of antennas is expected to be used in 5G. , This is called Massive MIMO technology. While current cell operation is 2-Dimension, 3D-Beamforming becomes possible when Massive MIMO technology is introduced, so Massive MIMO technology is also called FD-MIMO (Full Dimension).
  • the RF filter having a cavity structure is provided with a resonator composed of a resonating rod, such as a conductor, inside a box structure formed of a metallic conductor, so that only an electromagnetic field having a natural frequency exists, so that only characteristic frequencies of ultra-high frequencies are passed by resonance.
  • the bandpass filter having a cavity structure has a small insertion loss and is advantageous for high output, and thus is widely used as a filter for a mobile communication base station antenna.
  • An object of the present invention is to provide a cavity filter having a slimmer and more compact structure and an RF connector embedded in the thickness direction in the body.
  • a cavity filter having an assembly method capable of minimizing the accumulated amount of assembly tolerances generated when assembling a plurality of filters and an RF signal connection structure that is easy to mount and maintains the frequency characteristics of the filter uniformly In providing.
  • an RF signal connection portion provided to be spaced a predetermined distance from the external member having an electrode pad on one surface, the electrode pad and the RF signal of the external member
  • a terminal part electrically connected to a terminal part that absorbs assembly tolerances existing at the predetermined distance and prevents electric flow from being disconnected between the electrode pad and the RF signal connection part, and is inserted to surround the outside of the terminal part in the terminal insertion port.
  • the terminal unit, the RF signal connection unit via the dielectric may be disposed in the terminal insertion port formed in the filter body provided therein.
  • the dielectric body is provided to cover a portion of the outer inner surface of the upper inner dielectric and the other terminal penetrating the terminal installation hole, which is provided to surround a part of the outer peripheral surface of the one terminal passing through the terminal installation hole provided as a hollow space. It may include a lower inner dielectric.
  • the dielectric body, the second elastic member installation end formed larger than the diameter of the peripheral hole so that the rim portion of the elastic member is supported and the first elastic member is formed stepped so as to be larger than the diameter of the second elastic member installation end Any one of the stages can be formed.
  • the elastic member having the hollow portion in the form of a disc, the one end of the plurality of outer rim portions and the terminal portion supported by any one of the first elastic member installation end and the second elastic member installation end
  • a plurality of lower support ends are provided so as to be supported by any one of the first elastic member installation end and the second elastic member installation end having the hollow portion in the form of a first elastic member and a disk having a plurality of inner rim portions that are engaged and supported.
  • It may include a second elastic member having a boss portion formed extending below the elastic portion to surround the outer circumferential surface of the one terminal of the terminal portion passing through the elastic portion and the hollow portion.
  • first elastic member the outer edge portion and the inner edge portion by an outer incision extending a predetermined length toward the hollow from the outer circumferential surface and an inner incision extending a predetermined length from the hollow toward the outer circumferential surface. It may be provided to enable partitioning.
  • the first elastic member, the outer edge portion may be provided to be bent outward with respect to the inner edge portion
  • the second elastic member a plurality of inner elastic incisions formed incision up and down along the circumferential direction on the outside of the hollow portion, and a plurality of outer elastic incisions formed incision up and down along the circumferential direction outside the inner elastic incision. It may be provided to be elastically deformable by the portion.
  • the elastic member may be made of any one of beryllium copper (BeCu), suspension, and spring steel materials.
  • any one of the one terminal and the other terminal may be provided with a plurality of tension incisions formed long in the vertical direction.
  • the tension incision may be provided on the one terminal, and the upper end of the other terminal may be accommodated inside the lower end of the one terminal.
  • the tension incision may be provided at the other terminal, and the lower end of the one terminal may be accommodated inside the upper end of the other terminal.
  • the dielectric may support the outer peripheral surface of the one terminal or the other terminal on which the plurality of tension incisions are formed.
  • the contact portion of the one terminal of the terminal portion contacting the electrode pad may be formed in a conical shape rounded so that the upper end has a predetermined contact area.
  • the contact portion of the one terminal of the terminal portion that is in contact with the electrode pad may be formed in a round hemisphere shape so that the upper end has a predetermined contact area.
  • the cavitation filter according to an embodiment of the present invention can achieve various effects as follows.
  • the RF connector is embedded in the body in the thickness direction to have a more slim and compact structure design.
  • an assembly method capable of minimizing the accumulated amount of assembly tolerances generated when assembling a plurality of filters and an easy mounting and RF signal connection structure design that uniformly maintains the frequency characteristics of the filter have an effect.
  • an elastic member for resolving the assembly tolerance is provided with any of beryllium copper, suspension, and spring steel materials, and has an effect of preventing a decrease in reliability due to a compression reduction rate.
  • FIG. 1 is a diagram showing a stacked structure of an exemplary Massive MIMO antenna
  • FIG. 2 is a cross-sectional view showing a state in which a cavity filter is stacked between an antenna board and a control board according to an embodiment of the present invention
  • FIG. 3 is a plan perspective view of the structure of a cavity filter according to an embodiment of the present invention as viewed from the bottom side;
  • Figure 4 is an exploded perspective view showing a state in which the filter module and the terminal part is a part of the cavity filter according to an embodiment of the present invention is separated
  • FIG. 5 is an exploded perspective view of FIG. 4,
  • FIG. 6 is an exploded perspective view of a cavity filter according to an embodiment of the present invention.
  • FIG. 7A and 7B are partial cross-sectional views of FIG. 3, and are cross-sectional views showing a state before and after bonding to a PCB board,
  • FIGS. 7A and 7B are modified examples of FIGS. 7A and 7B.
  • FIG. 9 is a perspective view showing an embodiment of the elastic member in the configuration of FIG. 4,
  • FIG. 10 is a perspective view showing a modification of one embodiment of the elastic member in the configuration of FIG. 9,
  • FIG. 11 is a perspective view showing another embodiment of the elastic member in the configuration of FIG. 4,
  • FIG. 12 is a partial cross-sectional view of FIG. 3 in which the elastic member of FIG. 11 is interposed.
  • Terminal insert 27 Installation groove
  • filter module 31 RF signal connection
  • terminal portion 50 one side terminal
  • FIG. 1 is a diagram illustrating a stack structure of an exemplary Massive MIMO antenna.
  • FIG. 1 is only an exemplary appearance of an antenna device 1 in which an antenna assembly including a cavity filter according to an embodiment of the present invention is embedded, and does not limit the appearance when actually stacked.
  • the antenna device 1 includes a housing 2 on which a heat sink is formed and a radome 3 coupled to the housing 2.
  • An antenna assembly may be embedded between the housing 2 and the radome 3.
  • a power supply unit (PSU) 4 is coupled to a lower portion of the housing 2 through, for example, a docking structure, and the power supply unit 4 operates communication components provided in the antenna assembly. It provides the operating power for.
  • a cavity filter 7 is disposed on the rear surface of the antenna board 5 in which a plurality of antenna elements 6 are arranged on the front side, as many as the number of antennas, and the related PCB board 8 is subsequently stacked. It has a structure.
  • the cavity filter 7 may be tuned and verified in detail so as to have a frequency characteristic that meets specifications individually before mounting. The tuning and verification process is preferably performed quickly in an environment having the same characteristics as the mounting state.
  • FIG. 2 is a cross-sectional view showing a state in which a cavity filter is stacked between an antenna board and a control board according to an embodiment of the present invention.
  • Cavity filter 20 according to an embodiment of the present invention, referring to Figure 2, since it is possible to exclude the conventional RF connector 90 shown in Figure 1, the connection is easy, and a lower height profile The branch can provide an antenna structure.
  • the RF connection is provided on both sides of the height direction, even if vibration and heat distortion occurs in the antenna board 5 or the PCB board 8 by connecting with the cavity filter 20 according to an embodiment of the present invention RF connection This is maintained the same, there is an advantage that there is no change in the frequency characteristics.
  • FIG. 3 is a plan perspective view of a structure of a cavity filter according to an embodiment of the present invention as viewed from the bottom
  • FIG. 4 is a state in which a filter module and a terminal part which are a part of the cavity filter according to an embodiment of the present invention are separated Exploded perspective view
  • FIG. 5 is an exploded perspective view of FIG. 4
  • FIG. 6 is an exploded perspective view of a cavity filter according to an embodiment of the present invention
  • FIGS. 7A and 7B are some cross-sectional views of FIG. 3, which are coupled to a PCB board 8A and 8B are modified examples of FIGS. 7A and 7B.
  • the cavity filter 20 includes an RF signal connection unit (refer to reference numeral 31 below in FIG. 4), and has a hollow first case (not indicated in the drawing), A second case covering the first case (not indicated in the drawing), a terminal portion provided in the height direction of the cavity filter 20 on both sides in the longitudinal direction of the first case (see reference numeral 40 in FIG. 4), and both sides of the terminal portion 40
  • It includes a filter module 30 including an assembly hole 23 provided in the.
  • the terminal part 40 penetrates through the terminal insertion hole 25 provided in the first case and electrically connects an external member 8, for example, an electrode pad (not shown) of the antenna board or PCB board 8 and an RF signal connection part. do.
  • the terminal portion 40 is supported in the drawing by the RF signal connection (not shown), when the antenna board or the PCB board 8 in close contact, the outer member 8 (in particular, the It can be elastically supported so that the assembly tolerance existing in the terminal insertion port 25 of the filter body 21 to be described later can be solved while being in constant contact with the electrode pad provided on one surface).
  • the cavity filter 20 according to the present invention, the terminal portion 40 is provided separately as one terminal 50 and the other terminal 60, as will be described later, the shape and assembly tolerances for adding side tension It may be implemented as a specific embodiment to be described later for absorption.
  • the terminal portion 40 is provided with two members (see reference numerals 50 and 60 in FIG. 6) that are separated between the upper portion and the lower portion, as shown in FIGS. 4 to 8B, 2
  • a part of any one of the dog members may be provided as a separate type that is inserted into a part of the other member.
  • the opposite structure is also employable.
  • the terminal portion 40 when the terminal portion 40 is not shown in the drawing, but provided with an integral filter, in order to solve the assembly tolerance, when receiving a predetermined assembly force by the assembler, a part of the terminal portion 40 is elastically deformed It is provided with an elastic body.
  • the one-piece filter in which the terminal portion 40 is integrally formed does not require a separate shape design for separately adding side tension, since a break in electrical flow between the one end and the other end is not predicted.
  • the resolution of the assembly tolerance is that the separated one terminal 50 and the other terminal 60 are mutually connected to each other by the above-described predetermined assembly force.
  • the entire length may be contracted while being moved to overlap, and separate elastic members 80A and 80B may be provided so that the entire length is extended and restored when the assembly force is removed.
  • the terminal unit 40 is provided to be separated into the one terminal 50 and the other terminal 60, there is a possibility that the electrical flow is disconnected when moved to overlap each other, so that the one terminal 50 and the other terminal Any one of the 60 may be provided with an elastic body, or a separate shape change for adding a side tension may be required.
  • the term 'side tension' as described above, to prevent disconnection of the electrical flow between the one terminal 50 and the other terminal 60, one of the terminal 50 and the other terminal 60 One can be defined as the force transmitted in a direction different from the longitudinal direction toward the other.
  • the impedance matching design in the above-described terminal insertion port 25 should be performed in parallel, but the cavity filter 20 according to the present invention is implemented.
  • the impedance in the terminal insertion port 25 is a matched state. Therefore, among the configurations of the embodiments of the cavity filter according to the present invention described with reference to FIG. 4 or less, the external appearance of a configuration such as a dielectric body 70 or a reinforcement plate inserted with the terminal portion 40 in the terminal insertion port 25 Can take different shapes depending on the impedance matching design.
  • the cavity filter 20 is provided to be spaced a predetermined distance from the outer member 8 having an electrode pad (not indicated on the drawing) on one surface, as illustrated in FIGS. 4 to 8B.
  • the RF signal connection part and the electrode pad of the external member 8 are electrically connected to the RF signal connection part, and it is possible to eliminate the assembly tolerance existing at the predetermined distance, and at the same time, the electrical flow between the electrode pad and the resonance element is cut off. It includes a terminal portion 40 having a structure that can be prevented.
  • the outer member 8 as shown in FIG. 2, an antenna board or an amplifier (Power Amplifier, PA), a digital board (Digital board), and TX Calibration, on which the antenna elements are disposed on the other surface, is an integrated one board ( It may be a general term for any one of the PCB boards provided as one-board.
  • the filter body 21 may be provided with a dielectric material that is easy for internal impedance matching design (see reference numeral '70' in FIGS. 7A and 7B).
  • it may be provided with a Teflon (Teflon) material.
  • the terminal insertion port 25 may be provided in a hollow shape.
  • the shape of the terminal insertion port 25 may have a shape suitable for impedance matching design.
  • the washer installation portion 27 may be grooved and formed on one surface of the filter body 21, particularly, on one side of the terminal portion 40 to be described later, where one terminal 50 is provided.
  • the washer installation part 27 may be grooved so as to have a larger inner diameter than the terminal installation hole 77 to prevent the outer rim portion of the star washer 90, which will be described later, from being caught and prevented from being displaced upward.
  • the cavity filter 20 may further include a star washer 90 fixed to the washer installation part 27.
  • the fixed end 91 provided in a ring shape is fixed to the washer installation portion 27, and from the fixed end 91 toward the center of the electrode pad side of the antenna board or PCB board 8 It may include a plurality of support end 92 formed inclined upward.
  • Such a star washer 90 when assembling an embodiment of the cavity filter 20 according to the present invention to the antenna board or PCB board 8 by the assembler, not shown through the above-described assembly hole 23 With respect to the fastening force by the fastening member of the plurality of support ends 92 are supported on one surface of the antenna board or PCB board 8 may add elastic force.
  • the addition of elastic force of the plurality of support stages 92 serves to solve the assembly tolerances existing between the antenna board or the PCB board 8 of the embodiment of the cavity filter 20 according to the present invention.
  • the assembly tolerance absorbed by the star washer 90 is a concept different from the assembly tolerance absorbed by the terminal portion 40 as it will be described later in the terminal insertion port 25. That is, the cavity filter according to an embodiment of the present invention is designed to absorb the overall assembly tolerance in at least two places by separate members in a single assembly process, thereby enabling more stable coupling.
  • the terminal portion 40 in the cavity filter 20 according to an embodiment of the present invention, as shown in FIGS. 4 to 8B, one side terminal 50 contacting the electrode pad of the external member 8, RF
  • the signal connection portion it may include the other terminal 60 fixed to the solder hole 32 formed in the extended portion in the form of a plate.
  • the other terminal 60 does not necessarily have to be soldered directly to the RF signal connection part, and it is also possible to be coupled with another electrically conductive member that is electrically connected.
  • one of the one terminal 50 and the other terminal 60 is inserted into the other of the other, and when assembled, a part of each end may be disposed to overlap each other by a predetermined length.
  • the upper side of the other terminal 60 may be inserted into the lower side of the one terminal 50 on the drawing (in particular, see FIGS. 7A and 7B).
  • the lower end of one terminal 50 may be provided in the form of a hollow tube with an empty interior so that the upper end of the other terminal 60 is inserted.
  • Dielectric body 70 made of a dielectric material may be inserted.
  • the dielectric body 70 may be made of Teflon.
  • the material of the dielectric body 70 is not limited to Teflon, and any material having a dielectric constant capable of impedance matching in the terminal insertion port 25 can be replaced.
  • the dielectric body 70 may be provided with a hollow space in which the center portion communicates up and down, and a terminal installation hole 77 in which a terminal portion 40 to be described later is substantially installed is formed.
  • the dielectric body 70 includes a lower internal dielectric 73 integrally injection molded with the other terminal 60 of the terminal portion 40 and an upper internal dielectric integrally injection molded with one terminal 50 of the terminal portion 40. (72) may be further included.
  • the lower inner dielectric 73 is formed when injection molding integrally with the other terminal 50, and a terminal through hole 73a through which the other terminal 60 penetrates may be formed.
  • the upper internal dielectric 72 is formed when injection molding integrally with one terminal 50, and a terminal through hole 72a through which one terminal 50 penetrates may be formed.
  • the upper inner dielectric 72 may be formed to surround and support a portion of the outer circumferential surface of one terminal 50, and the lower inner dielectric 73 may be formed to surround and support a portion of the outer peripheral surface of the other terminal 60.
  • the dielectrics 72 and 73 are not necessarily manufactured by an injection molding method integrally with one terminal 50 and the other terminal 60 of the terminal portions 40.
  • the upper inner dielectric 72 and the lower inner dielectric 73 may be separately assembled to have terminal through-holes 72a and 73a, respectively, and assembled into a terminal installation hole 77.
  • the upper internal dielectric 72 is disposed so that impedance matching is performed in the terminal insertion port 25, and the dielectric body (so as to move in the vertical direction with respect to the lower terminal 60 fixed to correspond to one terminal 50) 70) is preferably provided to be spaced apart, the lower internal dielectric 73 is disposed so that the impedance matching is made in the terminal installation hole 77, the dielectric body (70) to easily fix the other terminal (60) ) May be provided.
  • the above-described combination of the dielectric body 70, the lower inner dielectric 73 and the upper inner dielectric 72 can be individually designed to suit the overall impedance matching inside the filter body 21.
  • a first elastic member installation end 74 may be formed in an upper portion of the terminal installation hole 77 of the dielectric body 70.
  • the first elastic member installation end 74 is formed to be stepped so as to be larger than the diameter of the peripheral terminal installation hole 77, so that the edge end of the second elastic member 80A of the elastic member 80 described later is installed and supported. It can be formed as possible.
  • a space in which the lower end of the one terminal 50 is located is defined as a terminal installation groove 76 and described. If the second elastic member installation end 74 refers to a portion formed to be stepped smaller than the terminal installation groove 76, on the contrary, the terminal installation groove 76 is a portion formed to be stepped smaller than the second elastic member installation end 74. It can be defined as called.
  • the boss portion 84b of the elastic member 80B may be installed on the bottom surface of the second elastic member installation end 74. This will be described in more detail later.
  • the first elastic member is formed to be stepped so that the diameter is larger than the diameter of the second elastic member installation end 74 in the portion of the terminal installation hole 77 corresponding to a position higher than the bottom surface of the terminal installation groove 76 Stages 78 may be formed.
  • the first elastic member installation end 78 may be provided with an elastic member 80A according to one embodiment of the elastic members 80A and 80B described later. This will be described in more detail later.
  • FIG. 9 is a perspective view showing an embodiment of the elastic member in the configuration of FIG. 4,
  • FIG. 10 is a perspective view showing another embodiment of the elastic member in the configuration of FIG. 4, and
  • FIG. 10 is a perspective view of the elastic member in the configuration of FIG. A perspective view showing a modification of one embodiment
  • FIG. 11 is a perspective view showing another embodiment of the elastic member in the configuration of FIG. 4, and
  • FIG. 12 is a partial cross-sectional view of FIG. 3 in which the elastic member of FIG. 11 is interposed.
  • Cavity filter 20 according to an embodiment of the present invention, as shown in Figures 5 to 12, a portion of the rim is supported on the dielectric body 70, and is supported to penetrate through the hollow portions 81a and 81b
  • the hollow portions 81a and 81b with respect to a part of the rim may further include elastic members 80A and 80B elastically supporting the terminal portion 40 in an operation of deforming in the vertical direction. have.
  • the elastic members (80A, 80B) may be provided with any one of beryllium copper (BeCu), suspension, and spring steel materials.
  • BeCu beryllium copper
  • suspension suspension
  • spring steel spring steel
  • a silicone material may be employed, but in the case of a silicone material, elasticity deterioration occurs due to a predetermined compression shrinkage rate after a long period of use, and accordingly a cavity filter The problem of deteriorating long-term reliability can be pointed out.
  • the material of the elastic members 80A and 80B is not a general silicone material, but its elasticity is low, but the deterioration in compression shrinkage is less likely to occur and can be used for a long period of time. To ensure long-term reliability, as described above, it is provided with any of beryllium copper, suspension, and spring steel materials.
  • the elastic members 80A and 80B have a hollow portion 81a in the form of a disc, as illustrated in FIGS. 9 and 10, but a plurality of outer rim portions supported by the first elastic member installation end 78 ( 84a) and one side of the terminal portion 40 may include a first elastic member 80A having a plurality of inner rim portions 85a to which the terminal 50 is engaged.
  • the first elastic member 80A has an outer cutout 82a in which an outer rim 84a and an inner rim 85a extend a predetermined length from the outer circumference toward the hollow 81a.
  • the hollow portion 81a may be provided to be partitioned by an inner cut portion 83a that is cut in a predetermined length toward the outer circumferential surface.
  • the first elastic member 80A may be formed in a zigzag ring shape in which adjacent outer edge portions 84a and inner edge portions 85a are interconnected.
  • the outer edge portion 84a supported on the second elastic member installation end 78 is opened.
  • the inner edge portion 85a is elastically deformed downward to elastically support the terminal portion 40.
  • the outer rim portion 84a and the inner rim portion 85a of the first elastic member 80A when external forces such as assembly force are not transmitted, connecting portions connecting them respectively While supporting the terminal portion 40 in a state parallel to, as shown in Figure 7b, when an external force such as a predetermined assembly force is transmitted to the first elastic member (80A), the inner edge portion (85a) is a terminal portion Elasticity of the terminal portion 40 while moving downward in the direction in which the assembly force is provided together with the 40 and the shape of the connecting portion connecting the outer edge portion 84a and the inner edge portion 85a to be inclined downwardly inward. It is to be supported.
  • the first elastic member 80A should not be limited to the shapes of FIGS. 7A and 7B and 9.
  • the first elastic member 80A a portion corresponding to the outer edge portion 84a is bent outwardly with respect to the inner edge portion 85a at a predetermined angle. Can be formed.
  • a portion corresponding to the outer edge portion 84a is bent outwardly with respect to the inner edge portion 85a at a predetermined angle. Can be formed.
  • a modification of the first elastic member 80A is that the outer edge portion 84a is formed to be bent relative to the inner edge portion 85a, resulting in cracks in the bending portion in repetitive use of elasticity. And no overall dimensional change.
  • the filter body 21, which is implemented as a modification of the first elastic member 80A, is brought into close contact with the electrode pad of the outer member 8 to obtain a predetermined assembly force. If provided, it is possible to secure a solid support force to the first elastic member installation end 74 by the bent outer frame portion 84a.
  • the elastic member as shown in FIG. 11, has a hollow portion 81b in the form of a disk, an elastic portion provided with a plurality of lower support ends 85b to be supported by the second elastic member installation end 74
  • the second elastic member 80B provided with a boss portion 84b formed to extend below the elastic portion so as to surround the outer circumferential surface of one terminal 50 of the terminal portion 40 penetrating through the hollow portion 81b (not shown in the drawing) ) May be further included.
  • the second elastic member 80B has a plurality of inner elastic incisions 83b and inner elastic incisions 83b formed incision up and down along the circumferential direction on the outside of the hollow portion 81b. It may be provided to be elastically deformable by a plurality of outer elastic incision (82b) formed incision up and down along the circumferential direction on the outside of the.
  • the contact portion 53 which is the front end of the one terminal 50, may be formed in a conical shape that gradually decreases in width toward the upper side.
  • One side of the terminal 50 is an operation of contacting the electrode pad of the external member 8 through the contact portion 53 which is the front end thereof, and when the assembly force is provided by the assembler, the elastic member within the terminal insertion port 25 ( 80A, 80B) may be provided to be movable in the vertical direction in the drawing.
  • the lower end portion 52 of the one side terminal 50 into which the upper end portion of the other terminal 60 is inserted may be provided with a plurality of tension incisions 55 formed long in the vertical direction.
  • the tension incision 55 may be formed to be cut so that the lower end 52 of the one side terminal 50 provided in the form of a hollow tube is divided into a plurality.
  • the tension incision 55 adds the above-described side tension in an operation to close the lower end 52 of one terminal 50 to the outer circumferential side of the upper end 61 of the other terminal 60 provided to be accommodated therein. Plays a role.
  • the dielectric body 70 is provided to support the outer circumferential surface of the one side terminal 50 on which the tension incision 55 is formed inward, the lower end portion of the one side terminal 50 cut by the tension incision 55 ( The inner surface of 52) is always in close contact with the outer peripheral surface of the upper end 61 of the other terminal 60 accommodated therein.
  • the addition of the side tension by the tension incision 55 can prevent the electric flow of the terminal portion 40 separated into two from occurring in advance.
  • the tip of the other terminal 60 of the terminal portion 40 is provided in a pointed shape so that it is easily inserted into the hollow tube shape of the one terminal 50, and the lower end of the other terminal 60 is RF described above It can be fixed to the signal connection.
  • the other terminal 60 the lower end is provided in the form of a hollow tube of the one side terminal 50, when the one side terminal 50 is moved downward by the assembly force, while the lower end is fixed to the RF signal connection unit ( 52) It is possible to absorb the assembly tolerance existing in the terminal insertion port 25 by inserting the depth deeper and stretching the vertical length of the terminal unit 40 as a whole.
  • the contact portion 53 is the support end 92 of the configuration of the star washer 90 It may be formed to a height that protrudes higher than that.
  • the cavity filter 20 is attached to one surface of an external member 8 such as an antenna board or a PCB board provided with an electrode pad.
  • a fastening member (not shown) is fastened to the assembly hole to transmit a predetermined assembly force to the cavity filter 20.
  • an external member such as an antenna board or PCB board to the cavity filter 20 arranged at predetermined intervals. It is also possible to transmit the assembly force by making one surface of (8) close.
  • the distance between the antenna board or PCB board 8 and the cavity filter 20 according to an embodiment of the present invention is reduced, and at the same time, the support end 92 of the star washer 90 is deformed by the aforementioned fastening force.
  • the assembly tolerance existing between the cavity filter 20 and the antenna board or PCB board 8 according to an embodiment of the present invention is primarily absorbed.
  • one terminal 50 of the terminal portion 40 is elastic while being pressed by one surface of an external member 8 such as an antenna board or PCB board so as to be moved a predetermined distance from the terminal insertion port 25 to the other terminal 60 side. Due to the elastically supported operation of the members 80A and 80B, the assembly tolerance existing in the terminal insertion port 25 of the cavity filter 20 according to the first embodiment of the present invention is absorbed secondaryly.
  • the one terminal 50 and the other terminal 60, the lower end of the one terminal 50 is a side tension with respect to the upper end of the other terminal 60 inserted into the hollow tube shape by the tension incision 55
  • the electrical flow can be prevented from being cut off, so that the signal performance degradation of the cavity filter 20 according to an embodiment of the present invention can be prevented.
  • a cavity filter having an assembly method capable of minimizing the accumulation amount of assembly tolerances generated when assembling a plurality of filters and an RF signal connection structure for easy mounting and maintaining the frequency characteristics of the filter uniformly Provides

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

La présente invention concerne un filtre à cavité et, en particulier, offre l'avantage d'empêcher la détérioration de performance d'un dispositif d'antenne par absorption efficace d'une tolérance d'assemblage qui peut se produire en raison d'une conception d'assemblage et d'empêcher une interruption d'un flux électrique, en comprenant : une partie de connexion de signal RF prévue pour être espacée à une distance prédéterminée d'un élément externe ayant un plot d'électrode formé sur une surface de celui-ci; une partie borne qui connecte électriquement le plot d'électrode de l'élément externe à la partie de connexion de signal RF, tout en absorbant une tolérance d'assemblage existant à l'intérieur de la distance prédéterminée et en empêchant simultanément une interruption d'un flux électrique entre le plot d'électrode et la partie de connexion de signal RF; un corps diélectrique qui est inséré dans un trou d'insertion de borne de façon à entourer l'extérieur de la partie de borne; et un élément élastique qui a une partie du bord supporté par le corps diélectrique et qui supporte élastiquement la partie de borne au moyen d'une opération dans laquelle une partie creuse est déformée dans la direction verticale lorsqu'une force d'assemblage est transmise à la partie de borne supportée pour passer à travers la partie creuse, la partie de borne comprenant une borne mise en contact avec le plot d'électrode et l'autre borne connectée à la partie de connexion de signal RF.
PCT/KR2019/013515 2018-10-15 2019-10-15 Filtre à cavité WO2020080796A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19873088.9A EP3869610A4 (fr) 2018-10-15 2019-10-15 Filtre à cavité
JP2021545344A JP7146105B2 (ja) 2018-10-15 2019-10-15 キャビティフィルタ
CN201980068198.8A CN113646966B (zh) 2018-10-15 2019-10-15 空腔滤波器
CN202310262489.9A CN117039372A (zh) 2018-10-15 2019-10-15 空腔滤波器
US17/229,869 US11522260B2 (en) 2018-10-15 2021-04-14 Cavity filter
JP2022149328A JP7430230B2 (ja) 2018-10-15 2022-09-20 キャビティフィルタ

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2018-0122558 2018-10-15
KR20180122558 2018-10-15
KR10-2019-0127755 2019-10-15
KR1020190127755A KR102329244B1 (ko) 2018-10-15 2019-10-15 캐비티 필터

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/229,869 Continuation US11522260B2 (en) 2018-10-15 2021-04-14 Cavity filter

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WO2020080796A1 true WO2020080796A1 (fr) 2020-04-23

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WO2020080796A1 (fr) * 2018-10-15 2020-04-23 주식회사 케이엠더블유 Filtre à cavité

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KR20180089265A (ko) * 2017-01-31 2018-08-08 주식회사 케이엠더블유 캐비티 필터
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WO2018143614A1 (fr) * 2017-01-31 2018-08-09 주식회사 케이엠더블유 Filtre à cavité
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Publication number Priority date Publication date Assignee Title
US20020061670A1 (en) * 2000-11-22 2002-05-23 Havener Jacob G. Floating coaxial connector
CN100459317C (zh) * 2006-09-29 2009-02-04 瞿金良 快插、自锁型射频同轴连接器
CN203039049U (zh) * 2012-12-24 2013-07-03 深圳市大富科技股份有限公司 一种连接装置、耦合调节机构及腔体滤波器
KR20180089265A (ko) * 2017-01-31 2018-08-08 주식회사 케이엠더블유 캐비티 필터
CN108448215A (zh) * 2018-05-16 2018-08-24 广东圣大电子有限公司 一种c波段电调腔体滤波器

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JP7430230B2 (ja) 2024-02-09
JP2022508748A (ja) 2022-01-19
JP7146105B2 (ja) 2022-10-03

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