WO2023273032A1 - 谐振器、滤波器、双工器、多工器以及通信设备 - Google Patents

谐振器、滤波器、双工器、多工器以及通信设备 Download PDF

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Publication number
WO2023273032A1
WO2023273032A1 PCT/CN2021/125759 CN2021125759W WO2023273032A1 WO 2023273032 A1 WO2023273032 A1 WO 2023273032A1 CN 2021125759 W CN2021125759 W CN 2021125759W WO 2023273032 A1 WO2023273032 A1 WO 2023273032A1
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WO
WIPO (PCT)
Prior art keywords
groove
cover plate
resonant
adjustment
tube
Prior art date
Application number
PCT/CN2021/125759
Other languages
English (en)
French (fr)
Inventor
钟志波
刘望
Original Assignee
大富科技(安徽)股份有限公司
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
Priority claimed from CN202121482544.8U external-priority patent/CN215184489U/zh
Priority claimed from CN202110728835.9A external-priority patent/CN113346215A/zh
Priority claimed from CN202122328226.2U external-priority patent/CN215771503U/zh
Priority claimed from CN202122328304.9U external-priority patent/CN215771504U/zh
Application filed by 大富科技(安徽)股份有限公司 filed Critical 大富科技(安徽)股份有限公司
Publication of WO2023273032A1 publication Critical patent/WO2023273032A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators

Definitions

  • the present application relates to the technical field of communication equipment, in particular to a resonator, filter, duplexer, multiplexer and communication equipment.
  • cavity filters are widely used in the field of communication, especially in the field of radio frequency communication.
  • the filter is used to select the communication signal and filter out the clutter or interference signal outside the frequency of the communication signal.
  • a traditional cavity coaxial filter mainly includes a cavity, a cover plate, a resonant rod, a tuning screw, a coupling screw, a window and a connector.
  • the cavity, cover plate, resonant rod and tuning screw constitute the filter resonant cavity
  • the tuning screw is installed on the cover plate through the thread structure, and the distance between the tuning screw and the resonating rod is changed by rotating the tuning screw, thereby adjusting the filter
  • the resonant frequency makes the filter reach the ideal index.
  • the traditional cavity coaxial filter has a threaded hole on the cover plate, and the tuning screw is matched with the threaded hole. During the process of fitting the tuning screw with the threaded hole, burrs, debris, etc. will inevitably be generated, reducing the Filter intermodulation performance and power performance.
  • One of the purposes of the embodiments of the present application is to provide a resonator, filter, duplexer, multiplexer, and communication equipment, aiming at solving the problem of low intermodulation performance and low power performance of traditional cavity coaxial filters question.
  • a resonator including a resonant cavity, the resonant cavity has a resonant cavity and an open end, and the resonator also includes a resonator that covers the open end and is connected to the resonant cavity.
  • the deformed cover plate, the resonance tube located in the resonant cavity, and the adjustment mechanism arranged on the deformed cover plate, the first groove is opened on the side of the deformed cover plate facing away from the resonant cavity, so
  • the adjusting mechanism is arranged in the first groove and is used to provide an acting force along the axial direction of the resonance tube, so that the bottom of the first groove is continuously deformed to adjust the deformed cover plate and the The distance between the resonant tubes.
  • a filter including at least one resonator as described above.
  • a duplexer which includes a transmit channel filter and a receive channel filter, and the transmit channel filter and the receive channel filter use the filter as described above for filtering.
  • a multiplexer including a plurality of transmit channel filters and a plurality of receive channel filters, and the transmit channel filters and the receive channel filters are filtered by the filter as described above .
  • a communication device including at least one resonator as described above.
  • Fig. 1 is a cross-sectional view of a resonator provided by an embodiment of the present application
  • Fig. 2 is an enlarged schematic view of area A in Fig. 1;
  • Fig. 3 is a top view of a resonator provided by an embodiment of the present application.
  • Fig. 4 is a cross-sectional view of a resonant tube and a resonant cavity provided by an embodiment of the present application;
  • Fig. 5 is a top view of a resonant tube and a resonant cavity provided by an embodiment of the present application;
  • Fig. 6 is a cross-sectional view of a resonance tube provided by an embodiment of the present application.
  • Fig. 7 is a cross-sectional view of a resonance tube provided by another embodiment of the present application.
  • Fig. 8 is a cross-sectional view of a resonance tube provided by another embodiment of the present application.
  • Fig. 9 is a cross-sectional view of a resonant tube provided in another embodiment of the present application.
  • Fig. 10 is a cross-sectional view of a resonator provided by another embodiment of the present application.
  • Fig. 11 is a cross-sectional view of the resonator provided in the first embodiment of the present application.
  • Fig. 12 is an enlarged schematic diagram of area A in Fig. 11;
  • Fig. 13 is a cross-sectional view of a resonator provided in the second embodiment of the present application.
  • Fig. 14 is an enlarged schematic diagram of area B in Fig. 13;
  • Fig. 15 is a perspective view of the adjustment rod provided by the second embodiment of the present application.
  • FIG. 16 is a cross-sectional view of a resonator provided in a third embodiment of the present application.
  • Figure 17 is an enlarged schematic view of area C in Figure 16;
  • Fig. 18 is a perspective view of the adjustment rod provided by the third embodiment of the present application.
  • FIG. 19 is a cross-sectional view of a resonator provided in a fourth embodiment of the present application.
  • FIG. 20 is an enlarged schematic diagram of area D in FIG. 19 .
  • the resonator 100 includes: a resonant cavity 10 , a deformation cover 20 , a resonant tube 30 and an adjustment mechanism 40 .
  • the resonant cavity 10 is a metal cavity, which may be entirely made of metal material or at least a metallized cavity on the inner surface, and has a resonant cavity 101 and an open end 102 .
  • the deformed cover plate 20 covers the opening end 102 and is connected with the resonant cavity body 10 , wherein the connection method between the deformed cover plate 20 and the resonant cavity body 10 may be screw connection or the like.
  • the resonant tube 30 is located in the resonant cavity 101 .
  • the resonant tube 30 may be integrally formed with the resonant cavity 10 , that is, the resonant tube 30 is integrally formed on the inner surface of the bottom of the resonant cavity 10 .
  • the resonant tube 30 may also be an independently arranged component, and be fixedly connected with the resonant cavity 10 through a fixing element.
  • the adjustment mechanism 40 is disposed on the deformable cover plate 20 .
  • the deformation cover 20 is continuously deformed by the adjustment mechanism 40 , so that the distance between the deformation cover 20 and the resonant tube 30 can be adjusted.
  • a first groove 21 is opened on the side of the deformable cover plate 20 facing away from the resonance tube 30 , and the adjustment mechanism 40 is arranged in the first groove 21 , and the adjustment mechanism 40 is used to provide The applied force causes the bottom of the first groove 21 to continuously deform to adjust the distance between the deformed cover plate 20 and the resonant tube 30 , thereby adjusting the resonant frequency of the resonator 100 .
  • the purpose of setting the first groove 21 is: on the one hand, in order to make the thickness of the deformed part of the deformed cover plate 20 smaller, and then make the adjustment mechanism 40 just deform the deformed cover plate 20 with the help of a small external force, which can improve The adjustability and tuning sensitivity of the filter; on the other hand, the overall height of the filter can be reduced, which is convenient for the miniaturization and thinning of the filter.
  • the continuous deformation of the deformed cover plate 20 may include the continuous deformation of the deformed cover plate 20 towards the resonant tube 30 , at this time, the distance between the deformed cover plate 20 and the resonant tube 30 is continuously reduced
  • the continuous deformation of the deformed cover 20 also includes the continuous deformation of the deformed cover 20 away from the resonant tube 30 , at this time, the distance between the deformed cover 20 and the resonant tube 30 increases continuously.
  • the resonant tube 30 faces the deformed cover plate 20, and a plate capacitor C is formed between the deformed cover plate 20 and the resonant tube 30.
  • a plate capacitor C is formed between the deformed cover plate 20 and the resonant tube 30.
  • the first groove 21 is provided on the side of the deformable cover plate 20 facing away from the resonant cavity 101, and an adjustment mechanism 40 is provided in the first groove 21.
  • the adjustment mechanism 40 is used to In order to provide a force along the axial direction of the resonant tube 30, the bottom of the first groove 21 is continuously deformed to adjust the distance between the deformed cover plate 20 and the resonant tube 30, thereby adjusting the resonant frequency of the resonator 100, thereby , this embodiment cancels the tuning screw and the threaded hole on the cover plate of the traditional cavity filter, thereby avoiding factors such as burrs and debris generated when the tuning screw cooperates with the threaded hole from affecting the intermodulation performance of the cavity filter And high-power indicators, can improve product intermodulation performance and high-power performance, and at the same time can improve product production pass rate, reduce product scrap rate and maintenance costs, and then improve product market competitiveness.
  • the adjustment mechanism 40 includes a support cover 41 , an adjustment rod 42 and an adjustment nut 43 .
  • the support cover plate 41 is arranged at the opening of the first groove 21, and one end of the adjustment rod 42 is fixedly connected with the bottom of the first groove 21 after passing through the support cover plate 41, and the adjustment nut 43 is sleeved outside the adjustment rod 42.
  • the adjusting nut 43 is located on the side of the supporting cover plate 41 facing away from the first groove 21, and an external thread 421 extending along the axial direction of the adjusting rod 42 is provided on the outer surface of the adjusting rod 42.
  • the external thread 421 is used for Cooperate with the adjusting nut 43.
  • annular boss 22 is formed at the opening of the first groove 21 , and the edge of the support cover 41 abuts against the annular boss 22 .
  • the first groove 21 is circular, and expands radially outward at the opening of the first groove 21 to form a through hole with a diameter larger than the first groove 21.
  • An annular boss 22 is formed at the center, the bottom edge of the support cover 41 abuts against the annular boss 22 , and the side of the support cover 41 abuts against the side of the first groove 21 adjacent to the annular boss 22 .
  • the axial displacement of the support cover plate 41 in a direction away from the resonant tube 30 may or may not be restricted.
  • the distance between the deformed cover plate 20 and the resonant tube 30 needs to be continuously reduced, that is, when the deformed cover plate 20 needs to be deformed toward the direction close to the resonant tube 30, the adjusting nut 43 can be loosened, and a direction to the adjusting rod 42 can be applied.
  • the lower acting force causes the deformed cover plate 20 to deform toward the direction close to the resonant tube 30 .
  • the adjustment mechanism 40 includes a support cover 41 , an adjustment rod 42 and an adjustment nut 43 .
  • the support cover plate 41 is arranged at the opening of the first groove 21, and one end of the adjustment rod 42 is fixedly connected with the bottom of the first groove 21 after passing through the support cover plate 41, and the adjustment nut 43 is sleeved outside the adjustment rod 42.
  • the adjustment nut 43 is located on the side of the support cover plate 41 facing away from the first groove 21, and an external thread 421 extending along the axial direction of the adjustment rod 42 is provided on the outer surface of the adjustment rod 42.
  • the adjustment nut 43 fits.
  • the adjusting nut 43 is axially fixed to the supporting cover 41 , that is, the axial relative position between the adjusting nut 43 and the supporting cover 41 remains unchanged.
  • the support cover 41 can rotate around the adjustment rod 42, and the adjustment nut 43 is fixedly connected with the support cover 41.
  • the adjustment nut 43 and the support cover 41 are fixedly connected together by welding or bonding, so that the support cover
  • the plate 41 is rotatable together with the adjustment nut 43 .
  • the support cover 41 can also be axially fixed only with the adjustment nut 43 , but the adjustment nut 43 can rotate relative to the support cover 41 , while the support cover 41 is fixed.
  • a limiting structure for limiting the displacement of the support cover 41 along the axial direction of the adjustment rod 42 is provided at the opening of the first groove 21 .
  • the limiting structure may be an annular first groove 21 , and the edge of the support cover 41 is locked in the first annular groove 21 and can rotate in the first annular groove 21 .
  • the first groove 21 is circular, and the support cover 41 is also circular, so as to facilitate the rotation of the support cover 41 .
  • the annular first groove 21 can be formed by surrounding the above-mentioned annular boss 22 and a limiting block or a limiting ring provided at the opening of the first groove 21 .
  • the supporting cover 41 when the adjusting nut 43 is rotated in the first direction under the action of an external force, the supporting cover 41 will rotate together with the adjusting nut 43. Since the axial displacement of the supporting cover 41 is limited, the adjusting nut 43 The axial displacement of the rod is also limited. At this time, a reaction force will be applied to the adjusting rod 42, so that the adjusting rod 42 will be displaced in a direction away from the resonant tube 30, and then drive the bottom of the first groove 21 fixedly connected with it to move away from the resonance tube 30.
  • the direction of the resonant tube 30 is deformed, so that the distance between the resonant tube 30 and the deformed cover plate 20 is continuously increased; when the adjusting nut 43 is turned in a second direction opposite to the first direction under the action of an external force, the support cover The plate 41 will rotate together with the adjusting nut 43. Since the axial displacement of the supporting cover plate 41 is limited, the axial displacement of the adjusting nut 43 is also limited.
  • a through hole 411 is opened on the support cover 41, and an opening 201 is opened at the bottom of the first groove 21, and one end of the adjustment rod 42 is fixedly connected in the opening 201 after passing through the through hole 411.
  • the adjusting rod 42 is in clearance fit with the through hole 411 , and one end of the adjusting rod 42 is inserted through the through hole 411 and inserted into the opening 201 to be fixedly connected with the opening 201 .
  • the through hole 411 and the opening 201 are holes with smooth inner walls, and the adjustment rod 42 will not rub against the inner wall of the through hole 411 when the axial displacement occurs in the through hole 411, so the adjustment rod 42 will not rub against the support cover when adjusting.
  • the opening 201 may or may not pass through the bottom of the first groove 21 .
  • a first boss 23 is formed at the bottom of the first groove 21 , and the above-mentioned opening 201 is opened in the first boss 23 .
  • the thickness of the deformed cover plate 20 at the bottom of the first groove 21 is relatively thin, and when the deformed cover plate 20 is deformed, the deformation at the position connected to the adjustment rod 42 is the largest.
  • the deformed cover plate 20 breaks during the deformation process, and a first boss 23 is provided at the position where the bottom of the first groove 21 is connected with the adjusting rod 42, and the first boss 23 can strengthen the adjusting rod 42 and the deformed cover plate
  • the connection strength of 20 prevents the deformed cover plate 20 from breaking during the deformation process, or the deformed cover plate 20 is disconnected from the adjustment rod 42 during the deformation process.
  • the adjustment rod 42 is in interference fit with the opening 201 .
  • the adjusting rod 42 is riveted and connected in the opening 201 through an interference structure, and the interference structure includes interference, knurling with an interference band, barbs with an interference band, and knurling and barbs with an interference band.
  • an interference structure is provided on the adjusting rod 42 to facilitate the firm connection between the adjusting rod 42 and the opening 201 .
  • the adjusting rod 42 may be a riveting screw, which is riveted to the opening 201 .
  • a second boss 11 is formed at the bottom of the resonant cavity 10
  • the resonant tube 30 is tubular, one end of which is connected to the second boss 11, and the other end of the resonant tube 30 is close to the deformed cover plate 20.
  • the resonant tube 30 is coaxial with the adjusting rod 42 .
  • FIG. 6 is a cross-sectional view of a resonance tube 30 provided by an embodiment of the present application.
  • An end of the resonant tube 30 close to the deformable cover 20 is closed, and an end of the resonant tube 30 close to the deformable cover 20 has a flange 31 .
  • the flange 31 is ring-shaped, and its cross section is arc-shaped, that is, the top of the resonant tube 30 is arc-shaped.
  • An end of the resonant tube 30 away from the deformable cover plate 20 passes through, and the resonant tube 30 is riveted to the above-mentioned second boss 11 .
  • FIG. 7 is a cross-sectional view of a resonance tube 30 provided in another embodiment of the present application.
  • An end of the resonant tube 30 close to the deformable cover 20 is closed, and an end of the resonant tube 30 close to the deformable cover 20 has a flange 31 .
  • the flange 31 is ring-shaped, and its cross section is square, that is, the top of the resonant tube 30 is flat-topped.
  • An end of the resonant tube 30 away from the deformable cover plate 20 passes through, and the resonant tube 30 is riveted to the above-mentioned second boss 11 .
  • FIG. 8 is a cross-sectional view of a resonance tube 30 provided in another embodiment of the present application.
  • An end of the resonant tube 30 close to the deformable cover 20 is open, and an end of the resonant tube 30 close to the deformable cover 20 has a flange 31 .
  • the flange 31 is ring-shaped, and its cross section is square, that is, the top of the resonant tube 30 is flat-topped.
  • An end of the resonant tube 30 away from the deformable cover plate 20 passes through, and the resonant tube 30 is riveted to the above-mentioned second boss 11 .
  • FIG. 9 is a cross-sectional view of a resonance tube 30 provided in yet another embodiment of the present application.
  • An end of the resonant tube 30 close to the deformable cover 20 is open, and an end of the resonant tube 30 close to the deformable cover 20 has a flange 31 .
  • the flange 31 is ring-shaped, and its cross section is square, that is, the top of the resonant tube 30 is flat-topped.
  • An installation hole 32 is provided at the end of the resonant tube 30 away from the deformation cover plate 20 , and the resonant tube 30 is connected to the bottom of the resonant cavity 10 through fasteners. Specifically, one end of the fastener passes through the mounting hole 32 and is fixedly connected to the bottom of the resonant cavity 10 .
  • the resonant tube 30 may not be turned up.
  • FIG. 10 is a cross-sectional view of a resonator 100 provided by an embodiment of the present application.
  • the resonant tube 30 is integrally formed with the resonant cavity 10 , that is, the resonant tube 30 is integrally formed on the inner surface of the bottom of the resonant cavity 10 .
  • the resonator 100 also includes a loading disc 50 connected to the top of the resonant tube 30, by connecting a capacitive loading disc 50 at the open end of the resonant tube 30, the capacitance value of the resonant tube 30 can be increased, the frequency of the resonant tube 30 can be reduced, and the frequency of the resonant tube 30 can be increased.
  • the power capacity of the resonant tube 30 overcomes the disadvantages of the traditional low-cost integrated resonant tube 30, making the resonator 100 have a wider range of use, and under the condition of low cost, the power range and frequency range of the resonator 100 are improved. product competitiveness.
  • the loading plate 50 is facing the deformed cover plate 20, and a plate capacitor is formed between the deformed cover plate 20 and the loading plate 50, and the frequency property of the resonator 100 is changed by changing the size of the plate capacitor, and the size of the plate capacitor is the same as
  • the distance between the deformation cover plate 20 and the loading plate 50 is related.
  • the adjustment mechanism 40 includes a support cover 41 , an adjustment rod 42 and an adjustment nut 43 .
  • the support cover plate 41 covers the opening of the first groove 21, and one end of the adjustment rod 42 is fixedly connected with the bottom of the first groove 21 after passing through the support cover plate 41 .
  • the adjustment nut 43 is sleeved outside the adjustment rod 42 and Cooperating with the adjustment rod 42 , the adjustment nut 43 is located on the side of the support cover 41 facing away from the bottom of the first groove 21 .
  • the axial displacement of the support cover 41 is restricted, that is, the support cover 41 cannot move axially.
  • the supporting cover plate 41 restricts the displacement of the adjusting nut 43 toward the direction of the loading plate 50, a reaction force will be applied to the adjusting rod 42 at this time, so that the adjusting rod 42 moves away from the loading plate 50.
  • the direction of the disk 50 is displaced, and then the bottom of the first groove 21 fixedly connected thereto is deformed away from the loading disk 50 , so that the distance between the loading disk 50 and the deformation cover 20 gradually increases.
  • the adjustment nut 43 and the support cover 41 are axially fixed, that is, the axial relative position between the adjustment nut 43 and the support cover 41 remains unchanged, and the support cover 41 can rotate around the adjustment rod 42 turn. At this time, the axial displacement of the support cover plate 41 is also restricted.
  • the adjusting nut 43 is rotated in the first direction under the action of an external force, the supporting cover 41 will rotate together with the adjusting nut 43. Since the axial displacement of the supporting cover 41 is limited, the axial displacement of the adjusting nut 43 is also limited.
  • a reaction force will be applied to the adjustment rod 42, so that the adjustment rod 42 will move away from the loading plate 50, and then drive the bottom of the first groove 21 fixedly connected to it to move away from the loading plate 50. deformation, so that the distance between the loading plate 50 and the cover plate 20 gradually increases; when the adjusting nut 43 is rotated in the second direction opposite to the first direction under the action of an external force, the supporting cover plate 41 will follow the adjustment nut 43 Rotate together, because the axial displacement of the support cover plate 41 is limited, the axial displacement of the adjusting nut 43 is also limited, and at this time, a reaction force will be applied to the adjusting rod 42, so that the adjusting rod 42 moves towards the direction of the loading plate 50 Displacement, and then drive the bottom of the first groove 21 fixedly connected therewith to deform towards the direction of the loading plate 50 , so that the distance between the loading plate 50 and the deformed cover plate 20 gradually decreases.
  • the loading tray 50 includes a main body portion 51 and an insertion portion 52 .
  • the main body portion 51 is disc-shaped, and the insertion portion 52 is cylindrical and fixedly connected to one side of the main body portion 51.
  • the insertion portion 52 is inserted into the opening at the top end of the resonant tube 30, and the top end of the resonant tube 30 The end surface is in contact with the main body portion 51 .
  • the top of the resonant tube 30 refers to the end of the resonant tube 30 close to the deformation cover 20 , the top of the resonant tube 30 is open, and the loading plate 50 is connected to the resonant tube 30 through the socket 52 .
  • the end face of the top end of the resonant tube 30 abuts against the end face of the main body 51 connected with the socket portion 52 , so as to position the loading plate 50 when the loading plate 50 is installed.
  • the main body portion 51 and the insertion portion 52 are integrally formed, for example, the main body portion 51 and the insertion portion 52 are formed by the same material and by the same process.
  • the thickness of the loading plate 50 along the axial direction of the resonance tube 30 is 1 mm to 2 mm.
  • the loading tray 50 is relatively thin, so it cannot be released from the mold or machined.
  • the thickness of the loading tray 50 mainly refers to the thickness of the main body portion 51 of the loading tray 50 .
  • the thickness of the loading plate 50 along the axial direction of the resonance tube 30 may be 1 mm, 1.2 mm, 1.5 mm, 1.8 mm or 2 mm, etc.
  • the loading plate 50 is riveted to the top end of the resonance tube 30 .
  • the loading plate 50 and the resonance tube 30 are connected together by riveting, the connection strength is stable and reliable, and the operation process is simple.
  • the loading plate 50 is welded to the top of the resonance tube 30 .
  • the loading plate 50 and the resonance tube 30 are connected together by welding, which has good connection performance, high rigidity of the welded structure, and good integrity.
  • the adjusting rod 42 is connected with the bottom of the first groove 21 by pressure riveting.
  • the adjusting rod 42 is fixedly connected with the bottom of the first groove 21 by means of pressure riveting connection, the connection strength is stable and reliable, and the operation process is simple.
  • the adjusting rod 42 is knurled connected with the bottom of the first groove 21 .
  • the adjusting rod 42 is fixedly connected to the bottom of the first groove 21 by means of knurl connection, and the connection strength is high.
  • the adjusting rod 42 is welded to the bottom of the first groove 21 .
  • the adjusting rod 42 is fixedly connected to the bottom of the first groove 21 by means of welding, which has good connection performance, high rigidity of the welded structure, and good integrity.
  • FIG. 11 and FIG. 12 are structural diagrams of a resonator 100 provided by an embodiment of the present application.
  • the resonator 100 includes a resonant cavity 10 , a deformation cover 20 , a resonant tube 30 and an adjustment mechanism 40 .
  • the adjustment mechanism 40 includes a support cover 41 , an adjustment rod 42 and an adjustment nut 43 .
  • the end of the resonant tube 30 close to the deformable cover 20 can be closed or open, and the end of the resonant tube 30 close to the deformable cover 20 has a flange 31 .
  • the flange 31 is ring-shaped, and its cross section is arc-shaped, that is, the top of the resonant tube 30 is arc-shaped.
  • a first groove 21 is formed on the side of the deformable cover plate 20 facing away from the resonant tube 30
  • a second groove 24 is formed at the bottom of the first groove 21 corresponding to the resonant tube 30
  • the second groove 24 faces away from the resonant tube 30, and the supporting cover plate 41 covers the opening of the first groove 21.
  • the side walls are rigidly connected, and the adjusting nut 43 is sheathed outside the adjusting rod 42 and is screwed with the adjusting rod 42 .
  • an external thread extending along the axial direction of the adjusting rod 42 is provided on the outer surface of the adjusting rod 42 , and the external thread is used for threading engagement with the adjusting nut 43 .
  • the adjusting nut 43 is used to rotate under the action of an external force. Since the supporting cover plate 41 restricts the displacement of the adjusting nut 43 toward the resonant tube 30, a reaction force will be applied to the adjusting rod 42 at this time, so that The adjusting rod 42 is displaced in a direction away from the resonant tube 30 , and then drives the bottom of the first groove 21 rigidly connected with it to deform in a direction away from the resonant tube 30 , so that the distance between the resonant tube 30 and the bottom of the first groove 21 is The distance between them is changed, thereby adjusting the resonant frequency of the resonator 100 .
  • a second groove 24 facing away from the resonance tube 30 is provided at the bottom of the first groove 21 at a position corresponding to the resonance tube 30 , and one end of the adjustment rod 42 is passed through a support cover plate 41 And after being inserted into the second groove 24, it is rigidly connected with the side wall of the second groove 24.
  • the adjusting rod 42 does not extend into the resonant cavity 101, and only the deformation cover plate 20 is deformed, which takes up little space in the vertical direction, thereby
  • the depth of the resonant cavity 101 can be used more effectively, thereby improving product performance; in addition, this embodiment cancels the tuning screw and the threaded hole on the cover plate of the traditional cavity filter, thereby avoiding problems caused by the cooperation of the tuning screw and the threaded hole.
  • Factors such as burrs and debris affect the intermodulation performance and high power index of the cavity filter, which can improve the intermodulation performance and high power performance of the product, and at the same time improve the production pass rate of the product, reduce the product scrap rate and maintenance cost, and further Improve product market competitiveness.
  • the adjusting rod 42 includes a first connecting section 421 , a second connecting section 422 and a third connecting section 423 connected in sequence.
  • the first connecting section 421 is screwed with the adjusting nut 43
  • the second connecting section 422 is in clearance fit with the supporting cover plate 41
  • the third connecting section 423 is inserted into the second groove 24 and rigidly connected with the side wall of the second groove 24
  • the outer diameter of the third connecting section 423 is larger than the outer diameter of the second connecting section 422 .
  • the adjusting rod 42 is rod-shaped, and the first connecting section 421 , the second connecting section 422 and the third connecting section 423 are arranged coaxially. thread, a through hole 411 is opened on the support cover 41 , and the second connecting section 422 passes through the through hole 411 and is in clearance fit with the support cover 41 .
  • the outer diameter of the third connecting section 423 is set to be larger than the outer diameter of the second connecting section 422, so that the rigid connection between the third connecting section 423 and the supporting cover plate 41 is more firm after being inserted into the second groove 24 .
  • the third connecting section 423 is provided with a dovetail groove along its circumference.
  • the third connecting section 423 is rigidly connected to the side wall of the second groove 24,
  • the side walls of the second groove 24 are embedded in the dovetail groove.
  • the adjusting rod 42 is connected to the deformed cover plate 20 by pressure riveting, the connection strength is stable and reliable, and the operation process is simple.
  • the adjusting rod 42 adopts a special screw made of high-strength material, and a dovetail groove is reserved at the tail of the screw.
  • the screw is crimped to the second groove 24 of the deformed cover plate 20
  • the material in the deformed cover plate 20 will be embedded in the dovetail groove, so that the screw and the deformed cover plate 20 form a rigid connection, that is, the two are tightly connected together Looseness occurs.
  • the supporting cover plate 41 is made of a material with high strength.
  • the outer surface of the third connecting section 423 is provided with knurling.
  • the third connecting section 423 is rigidly connected with the side wall of the second groove 24, the rolling The tines of the flower are embedded in the side walls of the second groove 24 .
  • the adjusting rod 42 is knurled connected with the deformable cover plate 20 .
  • the adjusting rod 42 adopts a special screw made of high-strength material, and the surface of the screw tail is knurled.
  • the special screw is crimped to the second groove 24 of the deformed cover 20, the knurled tines on the screw will be embedded in the deformed cover 20, so that the special screw and the deformed cover 20 form a rigid connection, that is, both Tightly connected together without loosening.
  • the supporting cover plate 41 is made of a material with high strength.
  • the third connecting section 423 is inserted into the second groove 24 and rigidly connected to the side wall of the second groove 24 by laser welding.
  • the adjusting rod 42 is laser welded to the deformed cover plate 20 .
  • the adjusting rod 42 adopts a conventional screw, and the screw and the deformed cover plate 20 are first positioned through a small gap, and then the screw and the deformed cover plate 20 are rigidly connected together by laser welding technology.
  • the supporting cover plate 41 is made of a material with high strength.
  • Laser welding has the characteristics of cheap price, small deformation, can be applied to large-scale automatic production, and can be used for non-contact long-distance welding.
  • the third connecting section 423 is inserted into the second groove 24 and then rigidly connected to the side wall of the second groove 24 by brazing.
  • the adjusting rod 42 is brazed with the deformed cover plate 20 .
  • brazing has the characteristics of low heating temperature, less impact on the matrix structure, flat and smooth welded joints, and beautiful appearance. It can realize the connection of dissimilar metals or alloys, and metal to metal.
  • the adjustment rod 42 adopts a screw, and the screw and the deformed cover plate 20 are positioned with a small gap, and then the screw and the deformed cover plate 20 are permanently connected together by brazing. Since the support cover 41 is made of high-strength material, the deformation is very small. By turning the adjusting nut 43, the deformed cover 20 is deformed, thereby changing the distance between it and the resonant tube 30, so as to adjust the resonator 100. Adjust the role of the frequency.
  • a first boss 23 is provided at the bottom of the first groove 21 at a position corresponding to the resonant tube 30 , and the first boss 23 extends away from the resonant tube 30 .
  • the above-mentioned second groove 24 is defined on the boss 23 .
  • a stepped second boss 11 is provided at the bottom of the resonance cavity 10 , and one end of the resonance tube 30 has an opening and is sleeved outside the second boss 11 .
  • the deformed cover plate 20 at the bottom of the first groove 21 is relatively thin, and when the deformed cover plate 20 is deformed, the deformation at the position connected to the adjustment rod 42 is the largest.
  • the deformed cover plate 20 breaks during the deformation process, and a first boss 23 is provided at the position where the bottom of the first groove 21 is connected with the adjusting rod 42, and the first boss 23 can strengthen the adjusting rod 42 and the deformed cover plate
  • the connection strength of 20 prevents the deformed cover plate 20 from breaking during the deformation process, or the deformed cover plate 20 is disconnected from the adjustment rod 42 during the deformation process.
  • the thickness of the deformation cover 20 at the bottom of the first groove 21 is smaller than the thickness of the support cover 41 .
  • the thickness of the bottom of the first groove 21 refers to the thickness of the bottom of the first groove 21 where the first boss 23 is not provided, and the thickness of the supporting cover plate 41 is greater than that of the first groove 21
  • the thickness of the bottom makes the strength of the support cover 41 greater than that of the bottom of the first groove 21, which is convenient for the adjustment rod 42 to drive the deformed cover 20 to deform.
  • the embodiment of the present application also provides a filter, which is constructed by combining resonators 100 , wherein at least one of the resonators 100 adopts the structure of the above-mentioned resonator 100 .
  • a filter which is constructed by combining resonators 100 , wherein at least one of the resonators 100 adopts the structure of the above-mentioned resonator 100 .
  • the deformed cover plate 20 of each resonator 100 in the filter is combined into the deformed cover plate 20 of the filter, and the resonant cavities 101 of N resonators 100 are called N resonant cavities 101 of the filter (N is an integer not less than 1).
  • An embodiment of the present application also provides a duplexer, which includes: a transmit channel filter and a receive channel filter, and the transmit channel filter and the receive channel filter use the above filter for filtering.
  • the transmit channel filter is used to process the transmit signal of the transmitter, and the receive channel filter is used to process the receive signal of the receiver.
  • An embodiment of the present application also provides a multiplexer, the multiplexer includes multiple transmit channel filters and multiple receive channel filters, and the transmit channel filters and receive channel filters use the above filters for filtering.
  • the transmit channel filter is used to process the transmit signal of the transmitter, and the receive channel filter is used to process the receive signal of the receiver.
  • An embodiment of the present application further provides a communication device, where the communication device includes at least one resonator 100 described above.
  • the filter, duplexer or multiplexer provided in the above embodiments can be applied to a communication system, such as a communication device (such as a base station or a terminal), and can also be applied to a radar system. be limited.

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Abstract

本申请公开一种谐振器、滤波器、双工器、多工器以及通信设备，该谐振器(100)包括具有谐振腔(101)及开口端(102)的谐振腔体(10)，覆盖开口端(102)并与谐振腔体(10)相连接的变形盖板(20)，位于谐振腔(101)内的谐振管(30)，以及设置于变形盖板(20)上的调节机构(40)，变形盖板(20)背向谐振腔(101)的一侧开设有第一凹槽(21)，调节机构(40)设置于第一凹槽(21)内且用于提供沿谐振管(30)轴向方向的作用力，使第一凹槽(21)的底部发生连续形变以调节变形盖板(20)与谐振管(30)之间的距离。

Description

谐振器、滤波器、双工器、多工器以及通信设备
本申请要求于2021年06月29日在中国专利局提交的、申请号为202110728835.9、发明名称为“一种谐振器、滤波器、双工器、多工器及通信设备”的中国专利申请的优先权，于2021年06月29日在国专利局提交的、申请号为202121482544.8、发明名称为“一种谐振器、滤波器、双工器、多工器及通信设备”的中国专利申请的优先权，于2021年09月24日在中国专利局提交的、申请号为202122328304.9、发明名称为“一种谐振器和滤波器”的中国专利申请的优先权，以及于2021年09月24日在中国专利局提交的、申请号为202122328226.2、发明名称为“一种调谐结构”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信设备技术领域，具体涉及一种谐振器、滤波器、双工器、多工器以及通信设备。
 背景技术
腔体滤波器作为一种频率选择装置被广泛应用于通信领域，尤其是射频通信领域。在基站中，滤波器用于选择通信信号，滤除通信信号频率外的杂波或干扰信号。
传统的腔体同轴滤波器主要包括腔体、盖板、谐振杆、调谐螺杆、耦合螺杆、窗口及连接器。其中，腔体、盖板、谐振杆和调谐螺杆组成滤波器谐振腔，调谐螺杆通过螺纹结构安装在盖板上，通过旋转调谐螺杆来改变调谐螺杆与谐振杆之间的距离,从而调节滤波器的谐振频率，使得滤波器达到理想指标。具体地，传统的腔体同轴滤波器在盖板上开设有螺纹孔，调谐螺杆与螺纹孔配合，在调谐螺杆与螺纹孔配合的过程中不可避免的会产生毛刺、碎屑等，降低了滤波器的互调性能和功率性能。
 技术问题
本申请实施例的目的之一在于：提供一种谐振器、滤波器、双工器、多工器、通信设备，旨在解决传统的腔体同轴滤波器的互调性能和功率性能低的问题。
 技术解决方案
为解决上述技术问题，本申请实施例采用的技术方案是：
第一方面，提供了一种谐振器，包括谐振腔体，所述谐振腔体具有一谐振腔及一开口端，所述谐振器还包括覆盖所述开口端并与所述谐振腔体相连接的变形盖板，位于所述谐振腔内的谐振管，以及设置于所述变形盖板上的调节机构，所述变形盖板背向所述谐振腔的一侧开设有第一凹槽，所述调节机构设置于所述第一凹槽内且用于提供沿所述谐振管轴向方向的作用力，使所述第一凹槽的底部发生连续形变以调节所述变形盖板与所述谐振管之间的距离。
第二方面，提供了一种滤波器，包括至少一个如上述所述的谐振器。
第三方面，提供了一种双工器，包括发射通道滤波器和接收通道滤波器，所述发射通道滤波器和所述接收通道滤波器采用如上述所述的滤波器进行滤波。
第四方面，提供了一种多工器，包括多个发射通道滤波器和多个接收通道滤波器，所述发射通道滤波器和所述接收通道滤波器采用如上述所述的滤波器进行滤波。
第五方面，提供了一种通信设备，包括至少一个如上述所述的谐振器。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或示范性技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本申请一实施例提供的谐振器的剖视图；
图2是图1中A区域的放大示意图；
图3是本申请一实施例提供的谐振器的俯视图；
图4是本申请一实施例提供的谐振管与谐振腔体的剖视图；
图5是本申请一实施例提供的谐振管与谐振腔体的俯视图；
图6是本申请一实施例提供的谐振管的剖视图；
图7是本申请另一实施例提供的谐振管的剖视图；
图8是本申请又一实施例提供的谐振管的剖视图；
图9是本申请再一实施例提供的谐振管的剖视图；
图10是本申请另一实施例提供的谐振器的剖视图；
图11是本申请第一实施例提供的谐振器的剖视图；
图12是图11中A区域的放大示意图；
图13是本申请第二实施例提供的谐振器的剖视图；
图14是图13中B区域的放大示意图；
图15是本申请第二实施例提供的调节杆的立体图；
图16是本申请第三实施例提供的谐振器的剖视图；
图17是图16中C区域的放大示意图；
图18是本申请第三实施例提供的调节杆的立体图；
图19是本申请第四实施例提供的谐振器的剖视图；
图20是图19中D区域的放大示意图。
 本发明的实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需说明的是，当部件被称为“固定于”或“设置于”另一个部件，它可以直接在另一个部件上或者间接在该另一个部件上。当一个部件被称为是“连接于”另一个部件，它可以是直接或者间接连接至该另一个部件上。术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。术语“第一”、“第二”仅用于便于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明技术特征的数量。“多个”的含义是两个或两个以上，除非另有明确具体的限定。
为了说明本申请所述的技术方案，以下结合具体附图及实施例进行详细说明。
本申请一实施例提供一种谐振器100，请参阅图1至图5，谐振器100包括：谐振腔体10、变形盖板20、谐振管30和调节机构40。
其中，谐振腔体10为一金属腔体，其可以整体为金属材料或者为至少内表面金属化的腔体，其具有一谐振腔101及一开口端102。变形盖板20覆盖开口端102，并与谐振腔体10连接，其中，变形盖板20与谐振腔体10的连接方式可以为螺钉连接等。
谐振管30位于谐振腔101内。在一实施例中，谐振管30可以与谐振腔体10一体形成，即谐振管30一体形成于谐振腔体10的底部的内侧面。在其他实施例中，谐振管30也可以是独立设置的部件，并与谐振腔体10通过固定元件进行固定连接。
调节机构40设置于变形盖板20上。在本实施例中，通过调节机构40使得变形盖板20发生连续形变，进而使得变形盖板20与谐振管30之间的距离可调。具体地，在变形盖板20背向谐振管30的一侧开设有第一凹槽21，调节机构40设置于第一凹槽21内，调节机构40用于提供沿谐振管30轴向方向的作用力，使第一凹槽21的底部发生连续形变以调节变形盖板20与谐振管30之间的距离，进而调节谐振器100的谐振频率。
其中，设置第一凹槽21的目的是：一方面为了使得变形盖板20的变形部位的厚度较小，进而使得调节机构40借助较小的外力便可使变形盖板20发生变形，可提高滤波器的可调性及调谐灵敏度；另一方面还可降低滤波器的整体高度，便于滤波器的小型化和薄型化。
在本实施例中，变形盖板20的连续形变可包括变形盖板20朝靠近谐振管30的方向发生的连续变形，此时，变形盖板20与谐振管30之间的距离发生连续减小；变形盖板20的连续形变还包括变形盖板20朝远离谐振管30的方向发生的连续变形，此时，变形盖板20与谐振管30之间的距离发生连续增加。
在本实施例中，谐振管30正对变形盖板20，变形盖板20与谐振管30之间形成平板电容C，通过改变平板电容C的大小来改变谐振器100的频率属性，而平板电容C的大小与变形盖板20和谐振管30之间的距离有关。故，通过改变变形盖板20与谐振管30之间的距离来改变谐振器100的谐振频率。谐振器100的谐振频率计算公式为F=1/2*pi*sqrt(L*C)，其中，F为谐振频率，pi为常数，L为电感，平板电容C越大,谐振频率F越低，平板电容C越小,谐振频率F越高。
本实施例提供的谐振器100，通过在变形盖板20背向谐振腔101的一侧开设所述第一凹槽21，并于第一凹槽21内设置调节机构40，该调节机构40用于提供沿谐振管30轴向方向的作用力，使第一凹槽21的底部发生连续形变以调节变形盖板20与谐振管30之间的距离，从而调节谐振器100的谐振频率，由此，本实施例取消了传统腔体滤波器的盖板上的调谐螺杆和螺纹孔，从而避免因调谐螺杆与螺纹孔配合时产生的毛刺和碎屑等因素而影响腔体滤波器的互调性能和大功率指标，可提高产品互调性能和大功率性能，同时可提高产品生产通过率，降低产品报废率和维修成本，进而提高产品市场竞争力。
在一实施例中，调节机构40包括支撑盖板41、调节杆42和调节螺母43。其中，支撑盖板41设置于第一凹槽21的开口处，调节杆42的一端穿设支撑盖板41后与第一凹槽21的底部固定连接，调节螺母43套设于调节杆42外，该调节螺母43位于支撑盖板41背向第一凹槽21的一侧，在调节杆42的外表面上开设有沿调节杆42的轴向方向延伸的外螺纹421，该外螺纹421用于与调节螺母43配合。
在本实施例中，为了限制支撑盖板41的轴向位移，在第一凹槽21的开口处形成有环形凸台22，支撑盖板41的边缘抵接于环形凸台22上。具体地，第一凹槽21呈圆形，在第一凹槽21的开口处沿径向向外扩展形成直径大于第一凹槽21的通孔，此时便于在第一凹槽21的开口处形成环形凸台22，支撑盖板41的底部边缘抵接于环形凸台22上，支撑盖板41的侧面抵接于第一凹槽21与环形凸台22相邻的侧面上。
在本实施例中，当在外力的作用下转动调节螺母43时，由于支撑盖板41限制了调节螺母43朝靠近谐振管30方向的位移，此时便会对调节杆42施加反作用力，使得调节杆42朝远离谐振管30的方向发生位移，进而带动与之固定连接的第一凹槽21底部朝远离谐振管30的方向发生形变，从而使得谐振管30与变形盖板20之间的距离发生连续增加。
在本实施例中，支撑盖板41朝远离谐振管30的方向的轴向位移可被限制，也可不被限制。当变形盖板20与谐振管30之间的距离需要连续减小，即变形盖板20需要朝靠近谐振管30的方向发生形变时，可松开调节螺母43，并对调节杆42施加一个向下的作用力，使变形盖板20朝靠近谐振管30的方向发生形变。
在另一实施例中，调节机构40包括支撑盖板41、调节杆42和调节螺母43。支撑盖板41设置于第一凹槽21的开口处，调节杆42的一端穿设支撑盖板41后与第一凹槽21的底部固定连接，调节螺母43套设于调节杆42外，该调节螺母43位于支撑盖板41背向第一凹槽21的一侧，在调节杆42的外表面上开设有沿调节杆42的轴向方向延伸的外螺纹421，该外螺纹421用于与调节螺母43配合。
在本实施例中，调节螺母43与支撑盖板41轴向固定，即调节螺母43与支撑盖板41的轴向相对位置保持不变。具体地，支撑盖板41能够绕调节杆42转动，调节螺母43与支撑盖板41固定连接，如调节螺母43与支撑盖板41通过焊接或粘接等连接方式固定连接在一起，使得支撑盖板41能够与调节螺母43一起转动。可以理解的是，在其它实施例中，支撑盖板41也可以是只与调节螺母43轴向固定，但是调节螺母43能够相对支撑盖板41转动，而支撑盖板41固定不动。
为了限制支撑盖板41的轴向位移，在第一凹槽21的开口处设置有用于限制支撑盖板41沿调节杆42的轴向方向发生位移的限位结构。具体地，该限位结构可以是环形第一凹槽21，支撑盖板41的边缘卡接于环形第一凹槽21内，并能够于环形第一凹槽21内转动。具体地，第一凹槽21呈圆形，支撑盖板41也呈圆形，以便于支撑盖板41的转动。为了便于拆装支撑盖板41，环形第一凹槽21可以由上述环形凸台22和设置于第一凹槽21的开口处限位块或限位环围合形成。
在本实施例中，当在外力的作用下朝第一方向转动调节螺母43时，支撑盖板41会随着调节螺母43一起转动，由于支撑盖板41的轴向位移被限制，调节螺母43的轴向位移也被限制，此时便会对调节杆42施加反作用力，使得调节杆42朝远离谐振管30的方向发生位移，进而带动与之固定连接的第一凹槽21的底部朝远离谐振管30的方向发生形变，从而使得谐振管30与变形盖板20之间的距离发生连续增加；当在外力的作用下朝与第一方向相反的第二方向转动调节螺母43时，支撑盖板41会随着调节螺母43一起转动，由于支撑盖板41的轴向位移被限制，调节螺母43的轴向位移也被限制，此时便会对调节杆42施加反作用力，使得调节杆42朝靠近谐振管30的方向发生位移，进而带动与之固定连接的第一凹槽21的底部朝靠近谐振管30的方向发生形变，从而使得谐振管30与变形盖板20之间的距离发生连续减小。
在一实施例中，在支撑盖板41上开设有通孔411，在第一凹槽21的底部开设有开孔201，调节杆42的一端穿设通孔411后固定连接于开孔201内。在本实施例中，调节杆42与通孔411间隙配合，调节杆42的一端穿设通孔411后插入开孔201并与开孔201固定连接。其中，通孔411和开孔201均为内壁光滑的孔，调节杆42于通孔411内发生轴向位移时不会与通孔411的内壁发生摩擦，因此调节杆42在调节时与支撑盖板41之间不会有毛刺或碎屑的产生；并且，由于调节杆42与开孔201固定连接，使得调节杆42在调节时其与变形盖板20之间也不会有毛刺或碎屑的产生。开孔201可贯穿第一凹槽21的底部，也可不贯穿第一凹槽21的底部。
在一实施例中，在第一凹槽21的底部形成有第一凸台23，该第一凸台23内开设有上述开孔201。在本实施例中，由于变形盖板20位于第一凹槽21底部的厚度相对较薄，而变形盖板20在发生变形时，其与调节杆42连接的部位发生的形变量最大，为防止变形盖板20在变形的过程中发生断裂，在第一凹槽21的底部与调节杆42连接的位置设置有第一凸台23，该第一凸台23可加强调节杆42与变形盖板20的连接强度，防止变形盖板20在形变的过程中发生断裂，或者变形盖板20在形变的过程中与调节杆42断开连接。
在一实施例中，调节杆42与开孔201过盈配合。具体地，调节杆42通过过盈结构压铆连接于开孔201内，该过盈结构包括过盈、过盈带滚花、过盈带倒刺，以及过盈带滚花和倒刺。在本实施例中，通过在调节杆42上设置过盈结构，以便于调节杆42与开孔201的牢固连接。在实际应用中，调节杆42可以是压铆螺杆，其与开孔201压铆连接。
在一实施例中，在谐振腔体10的底部形成有第二凸台11，谐振管30呈管状，其一端与第二凸台11连接，谐振管30的另一端朝靠近变形盖板20的方向延伸设置，该谐振管30与调节杆42同轴。
请参阅图6，为本申请一实施例提供的一种谐振管30的剖视图。谐振管30靠近变形盖板20的一端呈封闭状，且谐振管30靠近变形盖板20的一端具有翻边31。在本实施例中，翻边31呈环状，且其横截面呈弧形，即谐振管30的顶部呈弧状。谐振管30远离变形盖板20的一端贯通，该谐振管30与上述第二凸台11铆接。
请参阅图7，为本申请另一实施例提供的一种谐振管30的剖视图。谐振管30靠近变形盖板20的一端呈封闭状，且谐振管30靠近变形盖板20的一端具有翻边31。在本实施例中，翻边31呈环状，且其横截面呈方形，即谐振管30的顶部为平顶状。谐振管30远离变形盖板20的一端贯通，该谐振管30与上述第二凸台11铆接。
请参阅图8，为本申请又一实施例提供的一种谐振管30的剖视图。谐振管30靠近变形盖板20的一端呈开放状，且谐振管30靠近变形盖板20的一端具有翻边31。在本实施例中，翻边31呈环状，且其横截面呈方形，即谐振管30的顶部为平顶状。谐振管30远离变形盖板20的一端贯通，该谐振管30与上述第二凸台11铆接。
请参阅图9，为本申请再一实施例提供的一种谐振管30的剖视图。谐振管30靠近变形盖板20的一端呈开放状，且谐振管30靠近变形盖板20的一端具有翻边31。在本实施例中，翻边31呈环状，且其横截面呈方形，即谐振管30的顶部为平顶状。谐振管30远离变形盖板20的一端具有安装孔32，该谐振管30通过紧固件与谐振腔体10的底部连接。具体地，紧固件的一端穿设该安装孔32后固定连接于谐振腔体10的底部。
可以理解的是，在其它实施例中，谐振管30也可以不翻边。
请参阅图10，为本申请一实施例提供的一种谐振器100的剖视图。在本实施例中，谐振管30与谐振腔体10一体成型，即谐振管30一体形成于谐振腔体10的底部的内侧面。谐振器100还包括连接于谐振管30的顶端的加载盘50，通过在谐振管30的开路端连接一个容性加载盘50，可以增加谐振管30的电容值，降低谐振管30的频率，增加谐振管30的功率容量，克服了传统低成本一体化谐振管30的弊端，使得谐振器100的使用范围更广，在低成本的条件下，提高了谐振器100的功率范围和频率范围，提高了产品竞争力。
在本实施例中，加载盘50正对变形盖板20，变形盖板20与加载盘50之间形成平板电容，通过改变平板电容的大小改变谐振器100的频率属性，而平板电容的大小与变形盖板20和加载盘50之间的距离有关。
在本实施例中，第一凹槽21的底部正对加载盘50，调节机构40包括支撑盖板41、调节杆42和调节螺母43。其中，支撑盖板41覆盖第一凹槽21的开口设置，调节杆42的一端穿设支撑盖板41后与第一凹槽21的底部固定连接，调节螺母43套设于调节杆42外且与调节杆42配合，该调节螺母43位于支撑盖板41背向第一凹槽21的底部的一侧。
在本实施例中，支撑盖板41的轴向位移被限制，即支撑盖板41无法轴向移动。当在外力的作用下转动调节螺母43时，由于支撑盖板41限制了调节螺母43朝靠近加载盘50方向的位移，此时便会对调节杆42施加反作用力，使得调节杆42朝远离加载盘50的方向发生位移，进而带动与之固定连接的第一凹槽21的底部朝远离加载盘50的方向发生形变，从而使得加载盘50与变形盖板20之间的距离逐渐增加。
可以理解的是，在其它实施例中，调节螺母43与支撑盖板41轴向固定，即调节螺母43与支撑盖板41的轴向相对位置保持不变，支撑盖板41能够绕调节杆42转动。此时，支撑盖板41的轴向位移也被限制。当在外力的作用下朝第一方向转动调节螺母43时，支撑盖板41会随着调节螺母43一起转动，由于支撑盖板41的轴向位移被限制，调节螺母43的轴向位移也被限制，此时便会对调节杆42施加反作用力，使得调节杆42朝远离加载盘50的方向发生位移，进而带动与之固定连接的第一凹槽21的底部朝远离加载盘50的方向发生形变，从而使得加载盘50与盖板20之间的距离逐渐增加；当在外力的作用下朝与第一方向相反的第二方向转动调节螺母43时，支撑盖板41会随着调节螺母43一起转动，由于支撑盖板41的轴向位移被限制，调节螺母43的轴向位移也被限制，此时便会对调节杆42施加反作用力，使得调节杆42朝靠近加载盘50的方向发生位移，进而带动与之固定连接的第一凹槽21的底部朝靠近加载盘50的方向发生形变，从而使得加载盘50与变形盖板20之间的距离逐渐减小。
在一实施例中，加载盘50包括主体部51和插接部52。其中，主体部51呈圆盘状，插接部52呈圆柱状且固定连接于主体部51的一侧，插接部52插接于谐振管30的顶端的开口内，谐振管30的顶端的端面与主体部51抵接。
在本实施例中，谐振管30的顶端指的是谐振管30靠近变形盖板20的一端，谐振管30的顶端开口，加载盘50通过插接部52与谐振管30连接。谐振管30的顶端的端面与主体部51连接有插接部52的端面抵接，以便于在安装加载盘50时对加载盘50进行定位。具体地，主体部51与插接部52一体成型，如主体部51和插接部52采用同一种材料并采用同一种工艺成型。
在一实施例中，加载盘50沿谐振管30的轴向方向的厚度为1mm至2mm。在本实施例中，加载盘50的厚度较薄，无法出模，也不能机加工。其中，加载盘50的厚度主要指的是加载盘50的主体部51的厚度。在具体应用中，加载盘50沿谐振管30的轴向方向的厚度可以为1mm、1.2mm、1.5mm、1.8mm或2mm等。
在一实施例中，加载盘50与谐振管30的顶端铆接。在本实施例中，采用铆接方式将加载盘50和谐振管30连接在一起，其连接强度稳定可靠，操作工艺简单。在另一实施例中，加载盘50与谐振管30的顶端焊接。在本实施例中，采用焊接方式将加载盘50和谐振管30连接在一起，其连接性能好，焊接结构刚度大，整体性好。
在一实施例中，调节杆42与第一凹槽21的底部压铆连接。在本实施例中，采用压铆连接方式将调节杆42与第一凹槽21的底部固定连接在一起，其连接强度稳定可靠，操作工艺简单。
在另一实施例中，调节杆42与第一凹槽21的底部滚花连接。在本实施例中，采用滚花连接方式将调节杆42与第一凹槽21的底部固定连接在一起，其连接强度大。
在又一实施例中，调节杆42与第一凹槽21的底部焊接。在本实施例中，采用焊接连接方式将调节杆42与第一凹槽21的底部固定连接在一起，其连接性能好，焊接结构刚度大，整体性好。
请参阅图11及图12，为本申请一实施例提供的谐振器100的结构图。在本实施例中，谐振器100包括谐振腔体10、变形盖板20、谐振管30和调节机构40。调节机构40包括支撑盖板41、调节杆42和调节螺母43。
在本实施例中，谐振管30靠近变形盖板20的一端可呈封闭状，也可呈开放状，且谐振管30靠近变形盖板20的一端具有翻边31。翻边31呈环状，且其横截面呈弧形，即谐振管30的顶部呈弧状。
在本实施例中，变形盖板20背向谐振管30的一侧开设有第一凹槽21，第一凹槽21的底部与谐振管30对应的位置开设有第二凹槽24，该第二凹槽24背向谐振管30，支撑盖板41覆盖第一凹槽21的开口设置，调节杆42的一端穿设支撑盖板41并插入第二凹槽24后与第二凹槽24的侧壁刚性连接，调节螺母43套设于调节杆42外且与调节杆42螺接，该调节螺母43位于支撑盖板41背向第一凹槽21的底部的一侧。具体地，在调节杆42的外表面上开设有沿调节杆42的轴向方向延伸的外螺纹，该外螺纹用于与调节螺母43螺纹配合。
在本实施例中，调节螺母43用于在外力的作用下转动，由于支撑盖板41限制了调节螺母43朝靠近谐振管30方向的位移，此时便会对调节杆42施加反作用力，使得调节杆42朝远离谐振管30的方向发生位移，进而带动与之刚性连接的第一凹槽21底部朝远离谐振管30的方向发生形变，从而使得谐振管30与第一凹槽21的底部之间的距离发生变化，进而调节谐振器100的谐振频率。
本实施例提供的谐振器100，通过在第一凹槽21的底部与谐振管30对应的位置开设有背向谐振管30的第二凹槽24，调节杆42的一端穿设支撑盖板41并插入第二凹槽24后与第二凹槽24的侧壁刚性连接，此时调节杆42并未伸入谐振腔101，仅变形盖板20发生变形，在竖直方向占用空间小，从而能够更加有效地利用谐振腔101的深度，进而提升产品性能；另外，本实施例取消了传统腔体滤波器的盖板上的调谐螺杆和螺纹孔，从而避免因调谐螺杆与螺纹孔配合时产生的毛刺和碎屑等因素而影响腔体滤波器的互调性能和大功率指标，可提高产品互调性能和大功率性能，同时可提高产品生产通过率，降低产品报废率和维修成本，进而提高产品市场竞争力。
在一实施例中，调节杆42包括依次连接的第一连接段421、第二连接段422和第三连接段423。其中，第一连接段421与调节螺母43螺接，第二连接段422与支撑盖板41间隙配合，第三连接段423插入第二凹槽24且与第二凹槽24的侧壁刚性连接，第三连接段423的外径大于第二连接段422的外径。具体地，调节杆42呈杆状，第一连接段421、第二连接段422和第三连接段423同轴设置，在第一连接段421的外周面上开设有与调节螺母43配合的外螺纹，在支撑盖板41上开设有通孔411，第二连接段422穿设该通孔411并与支撑盖板41间隙配合。
在本实施例中，将第三连接段423的外径设置成大于第二连接段422的外径，使得第三连接段423插入第二凹槽24后与支撑盖板41的刚性连接更加牢固。
请参阅图11及图12，在本申请第一实施例中，第三连接段423沿其周向开设有燕尾槽，当第三连接段423与第二凹槽24的侧壁刚性连接时，第二凹槽24的侧壁嵌入燕尾槽中。在本实施例中，调节杆42与变形盖板20压铆连接，其连接强度稳定可靠，操作工艺简单。
具体地，调节杆42采用特制螺钉，该特制螺钉采用强度较高的材料制成，且螺钉尾部预留燕尾槽。当螺钉压接到变形盖板20的第二凹槽24时，变形盖板20中的材料会被嵌入燕尾槽中，使螺钉与变形盖板20形成刚性连接，即两者紧密连接在一起不发生松动。其中，支撑盖板41采用强度较高的材料制成，通过转动调节螺母43，使得变形盖板20产生形变，进而改变其与谐振管30之间的距离，起到对谐振器100调节频率的作用。
请参阅图13至图15，在本申请第二实施例中，第三连接段423的外表面设置有滚花，当第三连接段423与第二凹槽24的侧壁刚性连接时，滚花的尖齿嵌入第二凹槽24的侧壁中。在本实施例中，调节杆42与变形盖板20滚花连接。
具体地，调节杆42采用特制螺钉，该特制螺钉采用强度较高的材料制成，且螺钉尾部表面预留有滚花。当特制螺钉压接到变形盖板20的第二凹槽24时，螺钉上面的滚花尖齿就会嵌入到变形盖板20里，使特制螺钉与变形盖板20形成刚性连接，即两者紧密连接在一起不发生松动。其中，支撑盖板41采用强度较高的材料制成，通过转动调节螺母43，使得变形盖板20产生形变，进而改变其与谐振管30之间的距离，起到对谐振器100调节频率的作用。
请参阅图16至图18，在申请第三实施例中，第三连接段423插入第二凹槽24后通过激光焊接与第二凹槽24的侧壁刚性连接在一起。在本实施例中，调节杆42与变形盖板20激光焊接。
具体地，调节杆42采用常规螺钉，该螺钉与变形盖板20通过小间隙配合先进行定位，再通过激光焊接技术将螺钉与变形盖板20刚性连接在一起。其中，支撑盖板41采用强度较高的材料制成，通过转动调节螺母43，使得变形盖板20产生形变，进而改变其与谐振管30之间的距离，起到对谐振器100调节频率的作用。激光焊接具有价格便宜，变形小，可应用于大批量自动化生产，以及可进行非接触远距离焊接等特点。
请参阅图19及图20，在本申请第四实施例中，第三连接段423插入第二凹槽24后通过钎焊与第二凹槽24的侧壁刚性连接在一起。在本实施例中，调节杆42与变形盖板20钎焊。
其中，钎焊具有加热温度低，对母体组织影响较小，焊接接头平整光滑，外形美观等特点，其可以实现异种金属或合金、金属与金属的连接。调节杆42采用螺钉，螺钉与变形盖板20采用小间隙配合先进行定位，再采用钎焊将螺钉与变形盖板20永久连接在一起。由于支撑盖板41采用强度较高的材料制成，形变很小，通过转动调节螺母43，使得变形盖板20产生形变，进而改变其与谐振管30之间的距离，起到对谐振器100调节频率的作用。
在一实施例中，在第一凹槽21的底部与所述谐振管30对应的位置设置有第一凸台23，该第一凸台23背向谐振管30延伸设置，并在该第一凸台23上开设有上述第二凹槽24。在谐振腔体10的底部设置有呈台阶状的第二凸台11，谐振管30的一端具有开口并套接于第二凸台11外。
在本实施例中，由于变形盖板20位于第一凹槽21底部的厚度相对较薄，而变形盖板20在发生变形时，其与调节杆42连接的部位发生的形变量最大，为防止变形盖板20在变形的过程中发生断裂，在第一凹槽21的底部与调节杆42连接的位置设置有第一凸台23，该第一凸台23可加强调节杆42与变形盖板20的连接强度，防止变形盖板20在形变的过程中发生断裂，或者变形盖板20在形变的过程中与调节杆42断开连接。
在一实施例中，变形盖板20于第一凹槽21的底部的厚度小于支撑盖板41的厚度。在本实施例中，第一凹槽21的底部的厚度指的是第一凹槽21的底部未设置有第一凸台23的位置的厚度，支撑盖板41的厚度大于第一凹槽21的底部的厚度，使得支撑盖板41的强度大于第一凹槽21的底部的强度，便于调节杆42带动变形盖板20发生形变。
本申请实施例还提供了一种滤波器，该滤波器采用谐振器100进行组合构造而成，其中，谐振器100中的至少一个采用上述的谐振器100的结构。一般情况下，滤波器中各个谐振器100的变形盖板20合并为该滤波器的变形盖板20，N个谐振器100的谐振腔101称为该滤波器的N个谐振腔101(N为不小于1的整数)。
本申请实施例还提供了一种双工器，该双工器包括：发射通道滤波器和接收通道滤波器，发射通道滤波器和接收通道滤波器采用上述滤波器进行滤波。发射通道滤波器用于处理发射机的发射信号，接收通道滤波器用于处理接收机的接收信号。
本申请实施例还提供了一种多工器，该多工器包括多个发射通道滤波器和多个接收通道滤波器，发射通道滤波器和接收通道滤波器采用上述滤波器进行滤波。发射通道滤波器用于处理发射机的发射信号，接收通道滤波器用于处理接收机的接收信号。
本申请实施例还提供一种通信设备，该通信设备包括至少一个上述谐振器100。
可以理解的是，以上实施例提供的滤波器，双工器或多工器，可以应用于通信系统，如一种通信设备(比如基站或终端)中，也可以应用于雷达系统，在此可以不予限定。
以上仅为本申请的可选实施例而已，并不用于限制本申请。对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (23)

  1. 谐振器，其特征在于，包括谐振腔体，所述谐振腔体具有一谐振腔及一开口端，所述谐振器还包括覆盖所述开口端并与所述谐振腔体相连接的变形盖板，位于所述谐振腔内的谐振管，以及设置于所述变形盖板上的调节机构，所述变形盖板背向所述谐振腔的一侧开设有第一凹槽，所述调节机构设置于所述第一凹槽内且用于提供沿所述谐振管轴向方向的作用力，使所述第一凹槽的底部发生连续形变以调节所述变形盖板与所述谐振管之间的距离。
  2. 根据权利要求1所述的谐振器，其特征在于，所述调节机构包括设置于所述第一凹槽的开口处的支撑盖板、一端穿设所述支撑盖板后与所述第一凹槽的底部固定连接的调节杆，以及套设于所述调节杆外的调节螺母，所述调节螺母位于所述支撑盖板背向所述第一凹槽的底部的一侧，所述调节杆的外表面上开设有用于与所述调节螺母配合的外螺纹，所述第一凹槽的开口处形成有环形凸台，所述支撑盖板的边缘抵接于所述环形凸台上。
  3. 根据权利要求1所述的谐振器，其特征在于，所述调节机构包括设置于所述第一凹槽的开口处的支撑盖板、一端穿设所述支撑盖板后与所述第一凹槽的底部固定连接的调节杆，以及套设于所述调节杆外的调节螺母，所述调节螺母位于所述支撑盖板背向所述第一凹槽的一侧且与所述支撑盖板轴向固定，所述调节杆外开设有用于与所述调节螺母配合的外螺纹，所述第一凹槽的开口处设置有用于限制所述支撑盖板沿所述调节杆的轴向方向发生位移的限位结构。
  4. 根据权利要求2或3所述的谐振器，其特征在于，所述支撑盖板上开设有通孔，所述第一凹槽的底部开设有开孔，所述调节杆的一端穿设所述通孔后固定连接于所述开孔内。
  5. 根据权利要求4所述的谐振器，其特征在于，所述第一凹槽的底部形成有第一凸台，所述第一凸台内开设有所述开孔。
  6. 根据权利要求4所述的谐振器，其特征在于，所述调节杆与所述开孔过盈配合。
  7. 根据权利要求1所述的谐振器，其特征在于，所述谐振腔体的底部形成有第二凸台，所述谐振管的一端与所述第二凸台连接，所述谐振管的另一端朝靠近所述变形盖板的方向延伸设置。
  8. 根据权利要求7所述的谐振器，其特征在于，所述谐振管靠近所述变形盖板的一端呈封闭状。
  9. 根据权利要求7所述的谐振器，其特征在于，所述谐振管靠近所述变形盖板的一端呈开放状。
  10. 根据权利要求1所述的谐振器，其特征在于，所述谐振管与所述谐振腔体一体成型，所述谐振器还包括连接于所述谐振管的顶端的加载盘，所述第一凹槽的底部正对所述加载盘，所述调节机构包括覆盖所述第一凹槽的开口设置的支撑盖板、一端穿设所述支撑盖板后与所述第一凹槽的底部固定连接的调节杆，以及套设于所述调节杆外且与所述调节杆配合的调节螺母，所述调节螺母位于所述支撑盖板背向所述第一凹槽的底部的一侧。
  11. 根据权利要求10所述的谐振器，其特征在于，所述加载盘包括主体部，以及固定连接于所述主体部的一侧的插接部，所述插接部插接于所述谐振管的顶端的开口内，所述谐振管的顶端的端面与所述主体部抵接。
  12. 根据权利要求10所述的谐振器，其特征在于，所述加载盘沿所述谐振管轴向方向的厚度为1mm至2mm。
  13. 根据权利要求10所述的谐振器，其特征在于，所述加载盘与所述谐振管的顶端铆接或焊接。
  14. 根据权利要求10所述的谐振器，其特征在于，所述调节杆与所述第一凹槽的底部压铆连接、滚花连接或焊接。
  15. 根据权利要求1所述的谐振器，其特征在于，所述第一凹槽的底部与所述谐振管对应的位置开设有背向所述谐振管的第二凹槽，所述调节机构包括覆盖所述第一凹槽的开口设置的支撑盖板，一端穿设所述支撑盖板并插入所述第二凹槽后与所述第二凹槽的侧壁刚性连接的调节杆，以及套设于所述调节杆外且与所述调节杆螺接的调节螺母，所述调节螺母位于所述支撑盖板背向所述第一凹槽的底部的一侧，所述调节螺母用于在外力的作用下转动以使所述变形盖板发生形变，进而调节所述第一凹槽的底部与所述谐振管之间的距离。
  16. 根据权利要求15所述的谐振器，其特征在于，所述调节杆包括依次连接的第一连接段、第二连接段和第三连接段，所述第一连接段与所述调节螺母螺接，所述第二连接段与所述支撑盖板间隙配合，所述第三连接段插入所述第二凹槽且与所述第二凹槽的侧壁刚性连接，所述第三连接段的外径大于所述第二连接段的外径。
  17. 根据权利要求16所述的谐振器，其特征在于，所述第三连接段沿其周向开设有燕尾槽，当所述第三连接段与所述第二凹槽的侧壁刚性连接时，所述第二凹槽的侧壁嵌入所述燕尾槽中；或者，所述第三连接段的外表面设置有滚花，当所述第三连接段与所述第二凹槽的侧壁刚性连接时，所述滚花的尖齿嵌入所述第二凹槽的侧壁中；或者，所述第三连接段插入所述第二凹槽后通过激光焊接与所述第二凹槽的侧壁刚性连接在一起；或者，所述第三连接段插入所述第二凹槽后通过钎焊与所述第二凹槽的侧壁刚性连接在一起。
  18. 根据权利要求16所述的谐振器，其特征在于，所述第一凹槽的底部与所述谐振管对应的位置设置有第一凸台，所述第一凸台背向所述谐振管延伸设置，所述第一凸台上开设有所述第二凹槽。
  19. 根据权利要求16所述的谐振器，其特征在于，所述变形盖板于所述第一凹槽底部的厚度小于所述支撑盖板的厚度。
  20. 滤波器，其特征在于，包括至少一个如权利要求1至19任意一项所述的谐振器。
  21. 双工器，其特征在于，包括发射通道滤波器和接收通道滤波器，所述发射通道滤波器和所述接收通道滤波器采用如权利要求20所述的滤波器进行滤波。
  22. 多工器，其特征在于，包括多个发射通道滤波器和多个接收通道滤波器，所述发射通道滤波器和所述接收通道滤波器采用如权利要求20所述的滤波器进行滤波。
  23. 通信设备，其特征在于，包括至少一个如权利要求1至19任意一项所述的谐振器。
PCT/CN2021/125759 2021-06-29 2021-10-22 谐振器、滤波器、双工器、多工器以及通信设备 WO2023273032A1 (zh)

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