CN217035949U

CN217035949U - Resonance device

Info

Publication number: CN217035949U
Application number: CN202220470793.3U
Authority: CN
Inventors: 胡传灯; 张现利; 曾志军
Original assignee: Shenzhen Huanbo Technology Co ltd
Current assignee: Shenzhen Huanbo Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-07-22
Anticipated expiration: 2032-03-03

Abstract

This application is applicable to microwave measuring device technical field, provides a resonance device, and resonance device includes: the cavity is internally provided with a cavity, and a first opening is formed at the end part of the cavity by the cavity; the cover body is covered on the first opening and forms a resonant cavity with the cavity in an enclosing manner; first open-ended circumference is provided with towards the bellied first annular deformation flange of lid, and first annular deformation flange extends along first open-ended circumference, and first annular deformation flange can be by the lid extrusion deformation to the one end that the cavity was kept away from to first annular deformation flange pastes with the lid and leans on. Because first annular deformation flange can be by the cover body extrusion deformation to the one end that the cavity was kept away from to first annular deformation flange pastes with the lid and leans on, covers the lid behind first annular deformation flange, and is totally sealed between lid and the first opening, and accomplishes this round of experiment back, and the lid can be opened, changes the sample, carries out the sample experiment of next round, simple structure, easy operation.

Description

Resonance device

Technical Field

The application belongs to the technical field of microwave measuring devices, and particularly relates to a resonance device.

Background

The microwave is an electromagnetic wave in a frequency range of 300MHz to 300GHz, the microwave is ubiquitous in modern technology centers, compared with the electromagnetic wave in radio broadcasting, the wavelength of the microwave is much smaller, the wavelength range of the microwave is distributed between 1m to 1mm, and the microwave is between radio and infrared, and the characteristic that the microwave is suitable for signal wireless transmission with larger bandwidth enables the microwave to be widely applied to the fields of satellite communication, radar, wireless communication, navigation and the like. The testing of microwave band materials has also tended to be far from devices such as capacitive and resistive inductors used with low frequency radio waves, and systems based on lumped elements and tuned circuits have also been replaced with resonators or resonant lines.

The microwave dielectric material as a microwave transmission medium has also been widely used in various fields of microwave, and for non-magnetic dielectric materials, the dielectric constant and dielectric loss thereof are the main basis for reflecting the electromagnetic performance of the microwave dielectric material, i.e. important parameters for designing microwave devices or systems based on the material, so that it is very important for testing related parameters in the process of obtaining high-reliability microwave dielectric materials. These dielectric properties, including the dielectric constant and dielectric loss (corner tangent) of the material, are the basis for studying the material and developing corresponding dielectric devices, including but not limited to dielectric substrates, dielectric resonators/filters, dielectric antennas, microstrip antennas, microwave modules, LTCC (Low Temperature coefficient Co-fired Ceramic), microwave integration. According to different characteristics of dielectric materials, the testing method can be divided into a resonance method and a non-resonance method, namely, a resonance method, a transmission line terminal method, a free space method and the like to measure the dielectric property of the dielectric material. The resonance method is to place a sample to be measured into a resonant cavity, and determine the dielectric constant and the dielectric loss of the sample to be measured according to the changes of the resonant frequency and the quality factor of the sample before and after the sample is placed, and is a method for testing the complex dielectric constant of a material with more use, and the measurement accuracy is also the highest.

In the design of a resonant cavity, the selection of an electromagnetic coupling device is very important, two mainstream coupling devices comprise a coaxial coupling ring and a coupling probe, the coaxial coupling ring and the coupling probe are used for realizing the excitation of resonance, and the quality factor (Q value) of the resonant cavity is directly influenced by the coupling quantity, so that the fineness and the accuracy of the dielectric property test of the resonant cavity on a microwave dielectric material are influenced.

The resonant cavity is divided into an open type resonant cavity and a shielding type resonant cavity, the open type resonant cavity has radiation loss, during calculation, approximate algorithms such as an open waveguide method and a mixed magnetic wall method are usually adopted for calculation, a medium air interface is assumed to be an ideal magnetic wall, the radiation loss is not considered, and when some materials with lower dielectric constants are measured, deviation exists between an obtained electromagnetic parameter and an actual value, so that the dielectric property measurement of the materials is inaccurate.

In the design process of the resonant cavity for broadband testing, probes are selected to be coupled at different positions of the resonant cavity, the length or size of the probes and the depth of the probes inserted into the resonant cavity are respectively adjusted, and the coupling quantity of the resonant cavity is adjusted. In the closed resonant cavity testing method, the existing structure is complex and tedious to operate, the mechanical processing of the clamp and the testing piece is extremely high, and the flexibility of sample design is limited to a certain extent. In operation, in order to reduce radiation loss and improve the quality factor (Q value) of the resonant cavity, when the structure of the closed resonant cavity is designed, the closure of the resonant cavity is usually ensured by complicated splicing and mounting modes, the operation difficulty is high, the measurement time is long, and certain requirements are also provided for the professional ability of a tester.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a resonance device, which aims to solve the technical problems of complex sealing structure and difficult operation of the resonance device of a closed resonant cavity in the prior art.

To achieve the above object, according to one aspect of the present application, there is provided a resonance apparatus including: the cavity is internally provided with a cavity, and a first opening is formed at the end part of the cavity by the cavity; the cover body is covered on the first opening and forms a resonant cavity with the cavity in an enclosing manner; first open-ended circumference is provided with towards the bellied first annular deformation flange of lid, and first annular deformation flange extends along first open-ended circumference, and first annular deformation flange can be by the lid extrusion deformation to the one end that the cavity was kept away from to first annular deformation flange pastes with the lid and leans on.

Optionally, one end of the first annular deformation flange, which is far away from the cavity, is provided with a first annular tip portion, and the first annular tip portion extends along the extending direction of the first annular deformation flange.

Optionally, the outer periphery of the first annular deformation flange is provided with a first annular inclined surface extending along the first annular deformation flange, the first annular inclined surface is inclined inward, and a first annular tip portion is formed at one end, far away from the cavity, of the first annular deformation flange.

Optionally, the first annular deformer flange is coaxially disposed with the chamber, and an inner sidewall of the first annular deformer flange is coplanar with an inner sidewall of the chamber.

Optionally, the cavity includes chamber cover and base, first opening is located the first end of chamber cover, the second end of chamber cover is provided with the second opening, the base lid is established at the second opening, the chamber cover encloses with the base and establishes and form the cavity, the circumference of the second end of chamber cover is provided with towards the bellied second annular deformation flange of base, the second annular deformation flange extends along second open-ended circumference, second annular deformation flange can be by base extrusion deformation to the one end that the cavity was kept away from to the second annular deformation flange is leaned on with the base.

Optionally, an end of the second annular deformation flange remote from the cavity has a second annular tip portion, and the second annular tip portion extends along an extension direction of the second annular deformation flange.

Optionally, the outer periphery of the second annular deformation flange is provided with a second annular inclined surface extending along the second annular deformation flange, the second annular inclined surface is inclined inwards, and a second annular tip portion is formed at one end, far away from the cavity, of the second annular deformation flange.

Optionally, the resonance device further includes a positioning sleeve, an inner side wall of the positioning sleeve is matched with an outer side wall of the cavity, and the positioning sleeve is sleeved at the bottom of the outer side wall of the cavity sleeve and outside the base.

Optionally, a first positioning piece is arranged on the cover body, a second positioning piece is arranged on the base, and the first positioning piece and the second positioning piece are used for being matched and positioned with an external tool.

Optionally, the cavity is provided with two feeding interfaces, the two feeding interfaces are both communicated with the resonant cavity, and the two feeding interfaces are respectively used for installing the transmitting coupling probe and the receiving coupling probe.

The application provides a resonance device's beneficial effect lies in: compared with the prior art, the inside resonant cavity that has to carry out the experiment to the sample of the resonance device of this application, the cavity forms first opening at the tip of cavity, when needing to experiment, and the user can put into the cavity with the sample through first opening, covers the lid on first opening, accomplishes sealedly. The utility model provides a first open-ended circumference is provided with towards the bellied first annular deformation flange of lid, because first annular deformation flange can be by the deformation of lid extrusion, so that the one end that the cavity was kept away from to first annular deformation flange pastes with the lid and leans on, cover the lid behind first annular deformation flange, it is sealed completely between lid and the first opening, adaptability design through first annular deformation flange, the direct first opening cooperation with lid and cavity has been avoided, because the lid that regional machining error leads to around the first opening covers the back, the problem of unable well sealed cavity. And after the experiment of the round is completed, the cover body can be opened, the sample can be replaced, and the next round of sample experiment can be performed, so that the structure is simple, and the operation is easy.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic cross-sectional structural view of a resonance device provided in an embodiment of the present application;

FIG. 2 is an enlarged view of area A of FIG. 1;

fig. 3 is a top view of a resonant device according to an embodiment of the present disclosure.

Reference is now made to the following figures, in which:

10. a cavity; 11. a resonant cavity; 12. a first annular deformable flange; 121. a first annular tip portion; 122. a first annular chamfer; 13. a second annular deformable flange; 14. a cavity sleeve; 15. a base; 20. a cover body; 30. a first positioning member; 40. a second positioning member; 50. a positioning sleeve; 60. a transmitting coupling probe; 70. a coupling probe is received.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

As described in the background art, in the design of the resonant cavity, the selection of the electromagnetic coupling device is very important, and two mainstream coupling devices include a coaxial coupling ring and a coupling probe, which are used for realizing the excitation of resonance, and the magnitude of the coupling quantity directly affects the quality factor (Q value) of the resonant cavity and the fineness and accuracy of the dielectric property test of the resonant cavity on the microwave dielectric material. The resonant cavity is divided into an open type resonant cavity and a shielding type resonant cavity, the open type resonant cavity has radiation loss, during calculation, approximate algorithms such as an open waveguide method and a mixed magnetic wall method are usually adopted for calculation, a medium air interface is assumed to be an ideal magnetic wall, the radiation loss is not considered, and when some materials with lower dielectric constants are measured, deviation exists between an obtained electromagnetic parameter and an actual value, so that the dielectric property measurement of the materials is inaccurate. In the design process of the resonant cavity for broadband testing, probes are selected to be coupled at different positions of the resonant cavity, the length or size of the probes and the depth of the probes inserted into the resonant cavity are respectively adjusted, and the coupling quantity of the resonant cavity is adjusted. In the closed resonant cavity testing method, the existing structure is complex and tedious to operate, the mechanical processing of the clamp and the testing piece is extremely high, and the flexibility of sample design is limited to a certain degree. In operation, in order to reduce radiation loss and improve the quality factor (Q value) of the resonant cavity, when the structure of the closed resonant cavity is designed, the closure of the resonant cavity is usually ensured by complicated splicing and mounting modes, the operation difficulty is high, the measurement time is long, and certain requirements are also provided for the professional ability of a tester.

Referring to fig. 1 to 3, in order to solve the above-mentioned problems, according to an aspect of the present application, an embodiment of the present application provides a resonance apparatus including: the structure comprises a cavity 10 and a cover body 20, wherein a cavity is arranged in the cavity 10, and a first opening is formed at the end part of the cavity 10 by the cavity; the cover body 20 is covered on the first opening and encloses the cavity to form a resonant cavity 11; the first annular deformation flange 12 protruding towards the cover body 20 is arranged in the circumferential direction of the first opening, the first annular deformation flange 12 extends in the circumferential direction of the first opening, and the first annular deformation flange 12 can be extruded and deformed by the cover body 20, so that one end, away from the cavity 10, of the first annular deformation flange 12 is attached to the cover body 20. The first annular deformable flange 12 may be a structure mounted on the cavity 10 or a structure integrally formed with the cavity 10.

The inside resonant cavity 11 that has to carry out the experiment to the sample of resonance device of this application, the cavity forms first opening at the tip of cavity 10, when needing to carry out the experiment, and the user can put into the cavity with the sample through first opening, covers lid 20 on first opening, accomplishes sealedly. After the lid 20 that leads to because the regional machining error around the first opening covers, unable well sealed cavity, the first open-ended circumference of this application is provided with the bellied first annular deformation flange 12 towards lid 20, because first annular deformation flange 12 can be by lid 20 extrusion deformation, so that the one end that cavity 10 was kept away from to first annular deformation flange 12 pastes with lid 20, cover lid 20 behind first annular deformation flange 12, completely seal between lid 20 and the first opening, through the adaptive design of first annular deformation flange 12, direct lid 20 and the first opening cooperation of cavity 10 have been avoided, after the lid 20 that leads to because the regional machining error around the first opening covers, the problem of unable well sealed cavity. And after the experiment of this round, lid 20 can be opened, changes the sample, carries out the sample experiment of next round, simple structure, easy operation.

In order to make the first annular deformation flange 12 deform easily after the cover body 20 is covered, so that the cover body 20 fits the first annular deformation flange 12, in this embodiment, one end of the first annular deformation flange 12 away from the cavity 10 has a first annular tip portion 121, and the first annular tip portion 121 extends along the extending direction of the first annular deformation flange 12. After the cover 20 is pressed on the first annular tip portion 121, the tip of the first annular tip portion 121 is pressed and deformed by the cover 20 to be attached to the cover 20, so as to ensure the conductive sealing performance of the resonant cavity 11.

Specifically, the outer periphery of the first annular deformation flange 12 in this embodiment is provided with a first annular inclined surface 122 extending along the first annular deformation flange 12, the first annular inclined surface 122 is inclined inward, and a first annular tip portion 121 is formed at one end of the first annular deformation flange 12 far away from the cavity 10. The first annular inclined surface 122 may be formed by grinding a cylindrical blank, or may be directly formed integrally with the cavity 10 by casting.

In order to ensure the smoothness of the side wall of the resonant cavity 11 and further ensure the accuracy of the experimental data, the first annular deformation flange 12 and the chamber in this embodiment are coaxially arranged, and the inner side wall of the first annular deformation flange 12 is coplanar with the inner side wall of the chamber. Preferably, the chamber is a cylindrical space, and the formed resonant cavity 11 is also a cylindrical space.

In another preferred embodiment of the present application, in order to further improve the fitting degree between the cover body 20 and the cavity 10 and ensure the sealing performance of the resonant cavity 11, the cavity 10 in this embodiment includes a cavity sleeve 14 and a base 15, the first opening is located at a first end of the cavity sleeve 14, a second end of the cavity sleeve 14 is provided with a second opening, the base 15 covers the second opening, the cavity sleeve 14 and the base 15 enclose to form a cavity, a second annular deformation flange 13 protruding toward the base 15 is provided at a circumferential direction of the second end of the cavity sleeve 14, the second annular deformation flange 13 extends along a circumferential direction of the second opening, and the second annular deformation flange 13 can be pressed and deformed by the base 15, so that an end of the second annular deformation flange 13, which is far away from the cavity 10, abuts against the base 15. In this embodiment, the first annular deformation flange 12 is covered by the cover body 20, because the first annular deformation flange 12 can be extruded and deformed by the cover body 20, the end of the first annular deformation flange 12 away from the cavity 10 is attached to the cover body 20, the cover body 20 is covered behind the first annular deformation flange 12, the cover body 20 and the first opening are well sealed, when the cover body 20 is covered and pressed, the second annular deformation flange 13 is also stressed and deformed, and further the second annular deformation flange 13 is attached to the base 15, which not only ensures the sealing performance between the cavity 10 and the base 15, but also changes the angle of the cavity 10 through the deformation of the second annular flange, thereby improving the sealing performance between the cover body 20 and the cavity 10.

In order to make the second annular deformation flange 13 deform easily, so that the base 15 fits the second annular deformation flange 13, an end of the second annular deformation flange 13 away from the cavity 10 in this embodiment has a second annular tip portion, and the second annular tip portion extends along an extending direction of the second annular deformation flange 13.

Specifically, the outer periphery of the second annular deformation flange 13 in this embodiment is provided with a second annular inclined surface extending along the second annular deformation flange 13, the second annular inclined surface being inclined inward, and forming a second annular tip portion at an end of the second annular deformation flange 13 away from the chamber 10. The second annular inclined surface may be formed by grinding a cylindrical blank, or may be directly formed by integral casting with the cavity 10. In order to ensure the smoothness of the side wall of the resonant cavity 11 and further ensure the accuracy of the experimental data, the second annular deformation flange 13 in this embodiment is coaxially disposed with the chamber, and the inner side wall of the second annular deformation flange 13 is coplanar with the inner side wall of the chamber. Preferably, the chamber is a cylindrical space, and the resonant cavity 11 is also formed as a cylindrical space.

In order to ensure that the base 15 is coaxial with the cavity 10, the resonance device in this embodiment further includes a positioning sleeve 50, an inner side wall of the positioning sleeve 50 is matched with an outer side wall of the cavity 10, and the positioning sleeve 50 is simultaneously sleeved on the bottom of the outer side wall of the cavity sleeve 14 and the outer side of the base 15.

In order to position the cavity 10 and the cover 20, a first positioning element 30 is disposed on the cover 20, a second positioning element 40 is disposed on the base 15, and both the first positioning element 30 and the second positioning element 40 are used for positioning in cooperation with an external tool. Preferably, the first positioning element 30 includes a first positioning hole and a positioning pin, the second positioning element 40 includes a second positioning hole and a positioning pin, the cavity 10 can be positioned with an external fixing tool through the cooperation of the first positioning hole and the positioning pin, and the cover 20 is positioned with the external fixing tool through the cooperation of the second positioning hole and the positioning pin, so that the cover 20 and the cavity can be aligned.

In order to install the coupling probe of the feeding device, the cavity 10 in this embodiment is provided with two feeding interfaces, both of which are communicated with the resonant cavity 11, and the two feeding interfaces are respectively used for installing the transmitting coupling probe 60 and the receiving coupling probe 70. The transmitting coupling probe 60 and the receiving coupling probe 70 of the feeder respectively enter the cavity through two feeder interfaces, and one end of the measuring transmission line is connected and fixed to a feeder switchboard. The feeding interface can be arranged at the side part of the chamber, and also can be arranged at the upper part or the lower part of the chamber.

As known to those skilled in the art, in order to ensure the electrical conductivity of the resonant cavity 11, the cavity 10, the cover 20, and the first annular deformation flange 12 of the resonant device are made of metal, so as to ensure the electrical conductivity, and the metal material may be selected by those skilled in the art according to specific needs, for example, the cavity 10 is made of brass and the surface is plated with silver.

In summary, the resonant device provided in this embodiment has at least the following beneficial effects:

the resonant cavity that the resonant device inside of this application has and experiments the sample, and the cavity forms first opening at the tip of cavity, when needing to experiment, and the user can put into the cavity with the sample through first opening, covers the lid on first opening, accomplishes sealedly. The utility model provides a first open-ended circumference is provided with towards the bellied first annular deformation flange of lid, because first annular deformation flange can be by the deformation of lid extrusion, so that the one end that the cavity was kept away from to first annular deformation flange pastes with the lid and leans on, cover the lid behind first annular deformation flange, it is sealed completely between lid and the first opening, adaptability design through first annular deformation flange, the direct first opening cooperation with lid and cavity has been avoided, because the lid that regional machining error leads to around the first opening covers the back, the problem of unable well sealed cavity. And after the experiment of this round of completion, the lid can be opened, changes the sample, carries out the sample experiment of next round, simple structure, easy operation.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A resonating device, characterized in that the resonating device comprises:

the cavity body (10), a cavity is arranged inside the cavity body (10), and a first opening is formed at the end part of the cavity body (10) by the cavity;

the cover body (20) is arranged on the first opening in a covering mode, and the cover body (20) and the cavity are arranged in an enclosing mode to form a resonant cavity (11);

the first opening circumference is provided with the orientation the bellied first annular deformation flange (12) of lid (20), first annular deformation flange (12) are followed first open-ended circumference extends, first annular deformation flange (12) can by lid (20) extrusion deformation, so that first annular deformation flange (12) are kept away from the one end of cavity (10) with lid (20) paste and lean on.

2. A resonator device according to claim 1, characterized in that the end of the first annular deformer flange (12) remote from the cavity (10) has a first annular tip (121), the first annular tip (121) extending in the direction of extension of the first annular deformer flange (12).

3. A resonator device according to claim 2, characterized in that the outer circumference of the first annular deformer flange (12) is provided with a first annular ramp (122) extending along the first annular deformer flange (12), said first annular ramp (122) being inwardly inclined and forming said first annular tip (121) at an end of the first annular deformer flange (12) remote from the cavity (10).

4. A tuning device according to claim 1 wherein the first annular deformer flange (12) is coaxially disposed with the chamber, and wherein an inner side wall of the first annular deformer flange (12) is coplanar with an inner side wall of the chamber.

5. The resonance device according to claim 1, wherein the cavity (10) comprises a cavity sleeve (14) and a base (15), the first opening is located at a first end of the cavity sleeve (14), a second opening is provided at a second end of the cavity sleeve (14), the base (15) covers the second opening, the cavity sleeve (14) and the base (15) enclose to form the cavity, a second annular deformation flange (13) protruding towards the base (15) is provided at a circumferential direction of the second end of the cavity sleeve (14), the second annular deformation flange (13) extends along a circumferential direction of the second opening, and the second annular deformation flange (13) can be squeezed and deformed by the base (15) so that one end of the second annular deformation flange, which is far away from the cavity (10), abuts against the base (15).

6. A resonator device according to claim 5, characterized in that the end of the second annular deformable flange (13) remote from the cavity (10) has a second annular tip portion extending in the direction of extension of the second annular deformable flange (13).

7. A resonator device according to claim 6, characterized in that the outer circumference of the second annular deformation flange (13) is provided with a second annular inclined surface extending along the second annular deformation flange (13), the second annular inclined surface being inwardly inclined and forming the second annular tip at an end of the second annular deformation flange (13) remote from the cavity (10).

8. The resonator device according to claim 5, characterized in that it further comprises a positioning sleeve (50), the inner side wall of the positioning sleeve (50) being fitted with the outer side wall of the cavity (10), the positioning sleeve (50) being fitted over both the bottom of the outer side wall of the cavity sleeve (14) and the outside of the base (15).

9. The resonance device according to any one of claims 5 to 8, wherein a first positioning member (30) is disposed on the cover (20), a second positioning member (40) is disposed on the base (15), and both the first positioning member (30) and the second positioning member (40) are used for positioning in cooperation with an external tool.

10. The resonator device according to any of claims 1 to 8, characterized in that two feeding interfaces are provided on the cavity (10), both feeding interfaces communicating with the resonator (11), for mounting a transmitting coupling probe (60) and a receiving coupling probe (70), respectively.