Dielectric resonator
By setting up a boss in the housing chamber of the dielectric resonator and using elastic members to fix the dielectric resonant column, the loosening problem caused by external vibration during assembly and movement of the dielectric resonator is solved, and the Q value and energy conversion efficiency of the dielectric resonator are improved.
Patent Information
- Application Number
- CN202421748466.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-23
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-23
AI Technical Summary
During assembly and movement, existing dielectric resonators are prone to loosening of the dielectric resonant column due to external vibration, reducing the quality factor (Q value) and overall energy conversion efficiency.
A dielectric resonator is designed to position and initially fix it by setting a boss in the housing cavity of the housing and embed the lower end boss of the dielectric resonant column into the inner resonant cavity. At the same time, elastic members, such as metal shrapnel, are used to sandwich between the cover plate and the dielectric resonant column, so that the dielectric resonant column always adheres to the bottom wall of the accommodating cavity and maintains good contact.
Through this design, the installation stability of the dielectric resonant column is improved, and the loosening problem caused by external vibration is avoided, thereby improving the quality factor (Q value) and overall energy conversion efficiency of the dielectric resonator.
Smart Images
Figure CN222980770U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of mobile communication, and particularly relates to a dielectric resonator. Background Art
[0002] With the rapid development of wireless communication technology, the quality requirements for the propagated signals are getting higher and higher, so the requirements for communication equipment are also getting higher and higher. By setting a dielectric resonator in a communication base station, interference signals can be effectively blocked from entering the communication channel, thereby improving the quality of the propagated signals.
[0003] In current dielectric resonators, they usually include a housing, a dielectric resonance column, and a fastener. The main factor affecting the overall energy conversion efficiency of the dielectric resonator is the quality factor (Q value). The higher the quality factor (Q value), the higher the overall energy conversion efficiency of the dielectric resonator. The direct connection between the dielectric resonance column and the cavity of the housing can improve the quality factor (Q value) of the dielectric resonator.
[0004] When assembling existing dielectric resonators, in most cases, the dielectric resonance column is bonded to the cavity of the housing with glue, or a card slot is opened at the bottom of the cavity of the housing, and the dielectric resonance column is buckled into the card slot to achieve the installation of the dielectric resonance column. These installation methods make the dielectric resonance column prone to looseness due to external vibration during the movement process, resulting in poor contact between the dielectric resonance column and the housing, thereby reducing the quality factor (Q value) of the dielectric resonator. Summary of the Utility Model
[0005] An embodiment of the utility model provides a dielectric resonator, aiming to enhance the installation stability of the dielectric resonance column in the housing, so that the dielectric resonance column and the housing always maintain good contact, in order to improve the overall energy conversion efficiency of the dielectric resonator.
[0006] The embodiment of the utility model is implemented as follows. A dielectric resonator includes:
[0007] A housing having a receiving cavity with an opening. At the bottom wall of the receiving cavity, the housing is provided with a convex platform extending towards the opening direction;
[0008] A dielectric resonance column having an internal resonance cavity penetrating the axial internal space of the dielectric resonance column. At the lower end of the dielectric resonance column, the convex platform is adaptively embedded in the internal resonance cavity;
[0009] A cover plate installed at the opening end of the housing for closing the opening; and
[0010] An elastic member clamped between the cover plate and the dielectric resonance column. The elastic member has elastic deformation between the cover plate and the dielectric resonance column, so that the dielectric resonance column is stressed and tightly attached to the bottom wall of the receiving cavity.
[0011] Further, the elastic member is configured as a metal elastic sheet disposed around the upper end of the dielectric resonator column, and the metal elastic sheet surrounds the upper end opening of the inner resonator cavity.
[0012] Further, the material of the metal elastic sheet can be configured as beryllium copper.
[0013] Further, an adhesive is filled between the metal elastic sheet and the cover plate;
[0014] Further, the adhesive is filled between the metal elastic sheet and the dielectric resonator column.
[0015] Further, a groove is formed in the bottom wall of the accommodating cavity, the groove is disposed around the boss, at least a part of the bottom wall of the dielectric resonator column abuts against the groove, and the adhesive is disposed in the groove.
[0016] Further, in the vertical direction of the dielectric resonator column, the projection of the groove falls on the bottom wall of the dielectric resonator column, the side wall of the boss abuts against the inner wall of the inner resonator cavity, and a ring cavity section is formed by enclosing the side wall of the boss, the bottom wall of the dielectric resonator column and the groove, and the adhesive is filled in the ring cavity section.
[0017] Further, the adhesive can be configured as epoxy resin glue.
[0018] Further, the dielectric resonator further includes a tuning screw, the cover plate is provided with a first screw hole for the tuning screw to pass through, and one end of the tuning screw disposed in the accommodating cavity is located in the inner resonator cavity.
[0019] Further, a plurality of through holes are further formed around the first screw hole on the cover plate, screws are respectively disposed in the plurality of through holes, a plurality of second screw holes are formed at one end of the housing opposite to the cover plate, one second screw hole corresponds to one through hole, and one screw is correspondingly disposed in one second screw hole to connect the cover plate and the housing.
[0020] Further, the dielectric resonator further includes a connector disposed on the side wall of the housing, the connector includes a signal input device and a signal output device, and the output end of the signal input device and the input end of the signal output device are both disposed in the accommodating cavity.
[0021] In the dielectric resonator of the present utility model, due to the presence of a boss in the accommodation cavity of the housing, the boss is embedded in the inner resonance cavity of the dielectric resonance column to position and fix the dielectric resonance column, improving the installation efficiency of the dielectric resonance column. An elastic member is provided between the cover plate and the dielectric resonance column. The elastic member undergoes elastic deformation under force between the cover plate and the dielectric resonance column to continuously apply an elastic force to the dielectric resonance column, so that the dielectric resonance column is always pressed against the bottom wall of the accommodation cavity and maintains good contact under force, making it difficult for the dielectric resonance column to become loose due to external vibration during movement, improving the quality factor (Q value) of the dielectric resonator, and thus enhancing the overall energy conversion efficiency of the dielectric resonator. Brief Description of the Drawings
[0022] Figure 1 is a cross-sectional schematic view of the dielectric resonator according to an embodiment of the present utility model;
[0023] Figure 2 is a top view of the dielectric resonator according to an embodiment of the present utility model.
[0024] Description of the reference numerals: 100, housing; 110, accommodation cavity; 111, opening; 120, boss; 130, groove; 140, annular cavity section; 200, dielectric resonance column; 210, inner resonance cavity; 300, cover plate; 310, first screw hole; 320, through hole; 410, screw; 420, second screw hole; 500, metal spring sheet; 600, adhesive; 700, tuning screw; 800, signal input device; 900, signal output device. Detailed Description of the Embodiment
[0025] In order to make the objectives, technical solutions and advantages of the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0026] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated in the description of the orientation and positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.
[0027] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.
[0028] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present utility model. In addition, the present utility model may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between various embodiments and / or settings discussed. In addition, the present utility model provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.
[0029] The main factor affecting the overall energy conversion efficiency of the dielectric resonator is the quality factor (Q value, hereinafter referred to as the Q value). The higher the Q value, the higher the overall energy conversion efficiency of the dielectric resonator. The dielectric resonator column is directly connected to the cavity of the housing, which can increase the Q value of the dielectric resonator. When assembling existing dielectric resonators, most of them bond the dielectric resonator column in the cavity of the housing with glue, or open a slot at the bottom of the cavity of the housing and snap the dielectric resonator column into the slot to install the dielectric resonator column. These installation methods make the dielectric resonator column prone to looseness due to external vibration during movement, resulting in poor contact between the dielectric resonator column and the housing, thereby reducing the Q value of the dielectric resonator and further reducing the overall energy conversion efficiency of the dielectric resonator. The present utility model proposes a dielectric resonator, aiming to enhance the installation stability of the dielectric resonator column in the housing, so that the dielectric resonator column and the housing always maintain good contact to improve the overall energy conversion efficiency of the dielectric resonator.
[0030] Please refer to Figures 1 to 2 , the dielectric resonator proposed by the present utility model includes a housing 100, a dielectric resonator column 200, a cover plate 300, and an elastic member. The housing 100 has a receiving cavity 110 with an opening 111. At the bottom wall of the receiving cavity 110, the housing 100 is provided with a boss 120 extending towards the opening 111. The dielectric resonator column 200 has an internal resonance cavity 210 penetrating the axial internal space of the dielectric resonator column 200. At the lower end of the dielectric resonator column 200, the boss 120 is fitted and embedded in the internal resonance cavity 210. The cover plate 300 is installed at one end of the opening 111 of the housing 100 to close the opening 111. The elastic member is clamped between the cover plate 300 and the dielectric resonator column 200, and the elastic member has elastic deformation between the cover plate 300 and the dielectric resonator column 200, so that the dielectric resonator column 200 is stressed and closely attached to the bottom wall of the receiving cavity 110.
[0031] In this way, a boss 120 is provided at the bottom of the accommodating cavity 110 of the shell 100, and the boss 120 is adapted to be embedded in the inner resonance cavity 210 of the dielectric resonance column 200, so as to position and preliminarily fix the dielectric resonance column 200, facilitate the installation and subsequent fixation of the dielectric resonance column 200, and improve the installation efficiency of the dielectric resonance column 200, and an elastic member is provided between the cover plate 300 and the dielectric resonance column 200, and the cover plate 300 is connected to the opening 111 of the shell 100 to close the accommodating cavity 110, so that the elastic member is elastically deformed under the force between the cover plate 300 and the dielectric resonance column 200, so as to continuously apply elastic force to the dielectric resonance column 200, so that the dielectric resonance column 200 is always pressed against the bottom wall of the accommodating cavity 110 and maintains good contact, so that the dielectric resonance column 200 is not easily loosened due to external vibration during movement, thereby improving the Q value of the dielectric resonator, and further improving the overall energy conversion efficiency of the dielectric resonator.
[0032] Optionally, in one embodiment, the elastic member is configured as a metal spring 500 annularly arranged on the upper end of the dielectric resonant column 200 , and the metal spring 500 surrounds the upper end cavity opening of the inner resonant cavity 210 .
[0033] In this way, the elastic member is configured as a metal spring 500, so that the elastic member has a higher elastic recovery ability, so that the elastic member can withstand a larger pressure without being easily damaged, has a longer service life, and can apply a larger pressure to the dielectric resonance column 200, thereby improving the installation stability of the dielectric resonance column 200 in the installation cavity; the metal spring 500 is set as a ring structure, and the metal spring 500 is set around the upper end cavity opening of the inner resonance cavity 210, so that the dielectric resonance column 200 is evenly stressed and is not easily offset due to uneven stress, resulting in reduced installation stability of the dielectric resonance column 200.
[0034] Optionally, in another embodiment, the shape of the metal dome 500 can be set to various situations, and can also be set to a square metal dome 500, as long as it can continuously apply pressure to the dielectric resonant column 200.
[0035] Optionally, in one embodiment, the material of the metal spring 500 can be configured as beryllium copper.
[0036] In this way, the material of the metal shrapnel 500 is configured as beryllium copper, so that the metal shrapnel 500 has higher mechanical strength and smaller elastic hysteresis, making the metal shrapnel 500 less likely to break and able to exert a larger elastic force on the dielectric resonant column 200. In addition, beryllium copper has good conductivity and lower production cost, can ensure the stability of circuit connection, and can reduce the production cost of the dielectric resonator.
[0037] Optionally, in another embodiment, the material of the metal shrapnel 500 can be selected from a variety of materials, and one of spring steel, stainless steel, copper alloy and other materials can also be selected, as long as it can ensure that the metal shrapnel 500 can undergo elastic deformation to continuously apply pressure to the dielectric resonator column 200.
[0038] Optionally, in one embodiment, an adhesive 600 is filled between the metal shrapnel 500 and the cover plate 300.
[0039] In this way, filling the adhesive 600 between the metal shrapnel 500 and the cover plate 300 bonds the metal shrapnel 500 to the cover plate 300, enhancing the installation stability of the metal shrapnel 500 between the cover plate 300 and the dielectric resonator column 200, making it difficult for the metal shrapnel 500 to shift between the cover plate 300 and the dielectric resonator column 200, reducing the possibility that the metal shrapnel 500 causes uneven stress on the dielectric resonator column 200 due to shifting, and improving the installation stability of the dielectric resonator column 200.
[0040] Optionally, in another embodiment, there can be various connection methods between the metal shrapnel 500 and the cover plate 300, and the metal shrapnel 500 can also be welded to the cover plate 300 to enhance the installation stability of the metal shrapnel 500 between the cover plate 300 and the dielectric resonator column 200.
[0041] Optionally, in one embodiment, an adhesive 600 is filled between the metal shrapnel 500 and the dielectric resonator column 200.
[0042] In this way, filling the adhesive between the metal shrapnel 500 and the dielectric resonator column 200 enables the metal shrapnel 500 to always abut against the dielectric resonator column 200, ensuring that the metal shrapnel 500 continuously applies pressure to the dielectric resonator column 200, enabling the dielectric resonator column 200 to always maintain good contact with the bottom of the installation cavity, and improving the energy conversion efficiency of the dielectric resonator.
[0043] Optionally, in another embodiment, the adhesive 600 between the metal shrapnel 500 and the dielectric resonator column 200 can also be omitted.
[0044] Optionally, in one embodiment, a groove 130 is formed in the bottom wall of the accommodation cavity 110, the groove 130 is annularly arranged around the convex platform 120, at least a part of the bottom wall of the dielectric resonator column 200 abuts against the groove 130, and an adhesive 600 is provided in the groove 130.
[0045] Thus, a groove 130 is formed in the bottom wall of the receiving cavity 110, and an adhesive 600 is filled in the groove 130, so that the bottom of the dielectric resonator column 200 is connected to the bottom wall of the receiving cavity 110 through the adhesive 600, strengthening the connection between the dielectric resonator column 200 and the bottom wall of the receiving cavity 110, improving the stability of the dielectric resonator installed in the receiving cavity 110, making it difficult for the dielectric resonator column 200 to shift in the receiving cavity 110, and ensuring good contact between the dielectric resonator column 200 and the bottom wall of the receiving cavity 110.
[0046] Optionally, in another embodiment, the structure of the groove 130 and the adhesive 600 can also be omitted to reduce the production cost of the dielectric resonator.
[0047] Optionally, in one embodiment, in the vertical direction of the dielectric resonator column 200, the projection of the groove 130 falls on the bottom wall of the dielectric resonator column 200, the side wall of the boss 120 abuts against the inner wall of the inner resonator cavity 210, and the side wall of the boss 120, the bottom wall of the dielectric resonator column 200 and the groove 130 enclose an annular cavity section 140, and the annular cavity section 140 is filled with the adhesive 600.
[0048] Thus, the side wall of the boss 120, the bottom wall of the dielectric resonator column 200 and the groove 130 enclose a closed annular cavity section 140, making it difficult for the adhesive 600 to overflow when filling the annular cavity section 140, and reducing the possibility that the adhesive 600 overflows into the receiving cavity 110, resulting in a decrease in the resonance frequency and an increase in the loss of the dielectric resonator.
[0049] Optionally, in one embodiment, the adhesive 600 can be configured as epoxy resin glue.
[0050] Thus, by configuring the adhesive 600 as epoxy resin glue, since the epoxy resin glue has a high bonding strength, the installation of the metal elastic sheet 500 and the dielectric resonator column 200 in the receiving cavity 110 is more stable; it has good curing performance, and the epoxy resin glue can cure quickly after filling; it also has good dimensional stability, so that the epoxy resin glue has a small volume shrinkage rate after curing and is not easy to generate voids after filling; and it has good insulation and will not interfere with the electromagnetic performance of the dielectric resonator column 200.
[0051] Optionally, in another embodiment, there are various choices for the material of the adhesive 600, and it can also be configured as one of silicone glue, acrylate glue, UV curable glue, etc.
[0052] Optionally, in one embodiment, the dielectric resonator further includes a tuning screw 700, the cover plate 300 is provided with a first screw hole 310 for the tuning screw 700 to pass through, and one end of the tuning screw 700 located in the receiving cavity 110 is located in the inner resonator cavity 210.
[0053] In this way, a tuning screw 700 is arranged in the dielectric resonator. The tuning screw 700 is threadedly connected to the first screw hole 310 of the cover plate 300 and extends into the inner resonant cavity 210. The tuning screw 700 can be rotated to change the depth of the inner resonant cavity 210 and the electric field distribution inside the dielectric resonator, thereby adjusting the resonant frequency and Q value of the dielectric resonator, so that the dielectric resonator can be suitable for a variety of application scenarios.
[0054] Optionally, in one embodiment, the cover plate 300 is further provided with a plurality of through holes 320 around the first screw hole 310, and a screw rod 410 is passed through each of the plurality of through holes 320. The shell 100 is provided with a plurality of second screw holes 420 at one end opposite to the cover plate 300, and a second screw hole 420 is provided corresponding to a through hole 320, and a screw rod 410 is passed through a second screw hole 420 to connect the cover plate 300 and the shell 100.
[0055] In this way, the cover plate 300 is threadedly connected to the second screw hole 420 of the shell 100 through multiple screws 410 to achieve the installation of the cover plate 300 on the shell 100. Since the cover plate 300 and the shell 100 are detachably connected, it is convenient to disassemble the cover plate 300 to clean and maintain the inside of the dielectric resonator, thereby improving the service life of the dielectric resonator.
[0056] Optionally, in another embodiment, there may be multiple ways to install the cover plate 300 on the housing 100 , and the cover plate 300 may also be welded to the housing 100 , as long as the cover plate 300 can be installed and fixed.
[0057] Optionally, in one embodiment, the dielectric resonator further includes a connector disposed on the side wall of the housing 100 , the connector including a signal input device 800 and a signal output device 900 , and the output end of the signal input device 800 and the input end of the signal output device 900 are both disposed in the accommodating cavity 110 .
[0058] In this way, a signal input device 800 and a signal output device 900 extending into the accommodating cavity 110 are arranged on the side wall of the shell 100. The signal input device 800 is responsible for introducing the radio frequency signal into the accommodating cavity 110, and the signal output device 900 is responsible for exporting the radio frequency signal out of the accommodating cavity 110. An external signal source is electrically connected to the dielectric resonator through the signal input device 800 and the signal output device 900 to realize the signal transmission function.
[0059] It is understandable that those skilled in the art can, under the guidance of the above embodiments, combine various implementation methods in the above embodiments to obtain technical solutions of multiple implementation methods.
[0060] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A dielectric resonator, characterized in that: include: The shell has a receiving cavity with an opening, and the shell is provided with a boss extending toward the opening on the bottom wall of the receiving cavity; A dielectric resonant column having an inner resonant cavity penetrating the axial inner space of the dielectric resonant column, wherein the boss is adapted to be embedded in the inner resonant cavity at the lower end of the dielectric resonant column; A cover plate, mounted on one end of the opening of the shell, for closing the opening; as well as The elastic member is sandwiched between the cover plate and the dielectric resonance column. The elastic member has elastic deformation between the cover plate and the dielectric resonance column so that the dielectric resonance column is subjected to force and closely adheres to the bottom wall of the accommodating cavity.
2. The dielectric resonator according to claim 1, characterized in that The elastic member is configured as a metal spring sheet arranged around the upper end of the dielectric resonance column, and the metal spring sheet surrounds the upper end cavity opening of the inner resonance cavity.
3. The dielectric resonator according to claim 2, characterized in that The material of the metal spring can be configured as beryllium copper.
4. The dielectric resonator according to claim 2, characterized in that An adhesive is filled between the metal spring and the cover plate; And / or, the adhesive is filled between the metal spring and the dielectric resonant column.
5. The dielectric resonator according to claim 4, characterized in that The bottom wall of the accommodating cavity is provided with a groove, the groove is arranged around the boss, the bottom wall of the dielectric resonance column at least partially abuts against the groove, and the adhesive is arranged in the groove.
6. The dielectric resonator according to claim 5, characterized in that In the up and down directions of the dielectric resonance column, the projection of the groove falls into the bottom wall of the dielectric resonance column, the side wall of the boss abuts against the inner wall of the inner resonance cavity, the side wall of the boss, the bottom wall of the dielectric resonance column and the groove form an annular cavity section, and the annular cavity section is filled with the adhesive.
7. The dielectric resonator according to claim 4, characterized in that The adhesive may be configured as epoxy resin glue.
8. The dielectric resonator according to claim 1, wherein The dielectric resonator further comprises a tuning screw, the cover plate is provided with a first screw hole for the tuning screw to pass through, and one end of the tuning screw disposed in the accommodating cavity is located in the inner resonant cavity.
9. The dielectric resonator according to claim 8, characterized in that The cover plate is provided with a plurality of through holes around the first screw hole, and screws are passed through the plurality of through holes. The shell has a plurality of second screw holes at one end opposite to the cover plate, and one of the second screw holes is provided corresponding to one of the through holes, and one of the screws is passed through one of the second screw holes to connect the cover plate and the shell.
10. The dielectric resonator according to claim 1, wherein The dielectric resonator further comprises a connector arranged on the side wall of the shell, the connector comprises a signal input device and a signal output device, and the output end of the signal input device and the input end of the signal output device are both arranged in the accommodating cavity.