CN113594689A - Antenna and wireless device - Google Patents
Antenna and wireless device Download PDFInfo
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- CN113594689A CN113594689A CN202110828733.4A CN202110828733A CN113594689A CN 113594689 A CN113594689 A CN 113594689A CN 202110828733 A CN202110828733 A CN 202110828733A CN 113594689 A CN113594689 A CN 113594689A
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- 239000000758 substrate Substances 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 19
- 230000005855 radiation Effects 0.000 claims description 7
- 241000237983 Trochidae Species 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/225—Supports; Mounting means by structural association with other equipment or articles used in level-measurement devices, e.g. for level gauge measurement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- Waveguide Aerials (AREA)
Abstract
The application provides an antenna and wireless device, an antenna, including main radiator body, impedance matching network, second radiator to and the medium substrate who becomes the hollow cylinder form, medium substrate's surface is provided with the flexible line way board, the last overall arrangement of flexible line way board has a plurality of main radiator bodies and the impedance matching network of establishing ties, the internal surface in close contact with of second radiator body and medium substrate, the flexible line way board passes through short circuit probe and second radiator body electrical connection, main radiator body passes through the microstrip line and links to each other with the impedance matching network. The antenna is arranged in the wireless equipment, the antenna and the wireless equipment are suitable for application scenes such as high-voltage cables, high-voltage cable connectors and the like, and the antenna layout ensures 360-degree dead-angle-free omnibearing communication requirements of the cables.
Description
Technical Field
The present invention relates to an electronic device, and more particularly, to an antenna and a wireless device.
Background
In the high-voltage power supply system, equipment is communicated with the connector through a high-voltage wire. Over a long period of time, oxidation or vibration of the surrounding environment, etc., the contact resistance of the high voltage wire with the connector may increase, resulting in local overheating. Fire, large-area power failure and the like are easily caused by overheating of the high-voltage line, and great economic loss is caused. Monitoring the temperature curve of an important node in real time is an urgent need for managers of various large power plants, industrial and mining enterprises and transformer substations. A miniaturized passive temperature sensor has become an excellent solution, and thus it has become a first issue to develop an antenna having excellent performance of the miniaturized passive temperature sensor.
Disclosure of Invention
The invention provides an antenna and wireless equipment, which are used as an antenna solution of a miniaturized passive sensor, and the technical scheme is as follows:
the utility model provides an antenna, includes main irradiator, impedance matching network, second irradiator to and become the dielectric substrate of hollow cylinder form, dielectric substrate's surface is provided with the flexible line way board, the overall arrangement has a plurality of main irradiators and the impedance matching network of establishing ties on the flexible line way board, the internal surface in close contact with of second irradiator and dielectric substrate, the flexible line way board passes through short circuit probe and second irradiator electrical connection. The overall hollow cylinder of the antenna is suitable for application scenes such as high-voltage cables, high-voltage cable connectors and the like, and the antenna layout ensures 360-degree dead-angle-free omnibearing communication requirements of the cables.
The dielectric substrate with different dielectric constants can be used for adjusting the impedance of the antenna and the maximum radiation direction of the antenna, and the thickness of the dielectric substrate is adjusted to adjust the bandwidth of the antenna. The thicker the dielectric substrate, the wider the antenna bandwidth. Increasing the thickness of the dielectric substrate correspondingly increases the overall size of the device, requiring a trade-off between antenna bandwidth and device size.
The plurality of main radiators are connected in series and then connected with one end of the impedance matching network; the adjacent main radiators and the impedance matching network are connected through microstrip lines; the length and width of the main radiator can be changed to adjust the impedance and radiation direction of the antenna, and the width of the microstrip line can be changed to adjust the impedance of the antenna.
The impedance matching network comprises a plurality of inductors or capacitors connected in series or in parallel and is used for assisting in adjusting the impedance of the antenna and reducing the reflection from the source end to the antenna.
The second radiator is provided with a slot and used for changing a current path and finely adjusting the impedance of the antenna. The longer the slot length, the longer the current path, and the lower the antenna resonant frequency.
The short circuit probe passes through the dielectric substrate to with the earth and the second irradiator electrical connection of flexible line way board main area, the short circuit probe is located one side of flexible line way board, and a plurality of main irradiators are established ties the back and are connected with the one end of impedance matching network on this side, the short circuit probe is provided with two, and the upper and lower position of adjusting two short circuit probes can change antenna current path length.
Still overall arrangement has master control, sensor, communication unit, energy acquisition unit on the flexible line way board, the master control is used for handling sensor data, control communication unit, the sensor is used for gathering ambient temperature, communication unit is used for communicating with communication terminal, energy acquisition unit is arranged in gathering the energy in the environment to provide the electric energy.
The main radiator, the second radiator and the short circuit probe are all made of metal materials.
The flexible circuit board comprises a flexible circuit board main area, the impedance matching network and the short circuit probe are located at the flexible circuit board main area, and the main radiating body is located outside the flexible circuit board main area.
The wireless equipment is internally provided with the antenna and comprises a shell, wherein the overall appearance of the shell is in a hollow cylindrical shape, and the shell is suitable for being embedded on cylindrical objects such as a high-voltage cable, a high-voltage cable connector and the like and comprises a top shell and a bottom shell; the bottom shell is used for embedding the antenna and comprises an outer wall, an inner wall and a bottom shell bottom, the outer wall and the inner wall are connected together to form a whole at the bottom of the bottom shell, and the top shell is buckled on the bottom shell.
The invention has the following obvious advantages:
the antenna provided by the invention has the advantages that the radiation direction is vertical to the high-voltage wire routing direction and is surrounded by 360 degrees, and the coverage is comprehensive. In the antenna development process, the antenna impedance can be optimized through various modes such as adjustment of the length and width of the main radiator, adjustment of the number of the main radiators, adjustment of the width of the series microstrip line, selection of the type and thickness of the medium substrate, adjustment of the slotting length of the second radiator, adjustment of the vertical position of the short-circuit probe and the like, the reflection from the source end to the antenna is reduced, and the antenna is suitable for development of wireless equipment with various sizes. The invention has the advantages of simple structure, convenient installation, good use effect and better signal transmitting function.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived on the basis of these drawings without inventive effort:
fig. 1 is a schematic structural diagram of the antenna;
fig. 2 is an expanded view of a plurality of main radiators and a flexible wiring board of the antenna;
FIG. 3 is a top view of the antenna structure;
FIG. 4 is a schematic diagram of an external structure of a wireless device to which the antenna is applied;
FIG. 5 is a top view of the structure of the wireless device;
fig. 6 is a schematic diagram of the housing structure of the wireless device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.
In the description of the present application, it is to be understood that the terms "center", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "primary" and "secondary" 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 "primary" or "secondary" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The antenna and the wireless device provided by the invention will be described in detail below.
As shown in fig. 1, the antenna 20 includes: the antenna comprises a dielectric substrate 11, a plurality of main radiators (221, 223, 225 and 227) connected in series, a second radiator 21 and an impedance matching network, wherein the dielectric substrate 11 is in a hollow cylindrical shape, a flexible circuit board is arranged on the outer surface of the dielectric substrate 11 and is divided into a flexible circuit board main area 29 and other board areas, and a plurality of main radiators (221, 223, 225 and 227) connected in series are distributed on the other board areas, so that the plurality of main radiators (221, 223, 225 and 227) connected in series are attached to the outer surface of the dielectric substrate 11; an impedance matching network is arranged in the flexible printed circuit main area 29, the second radiator 21 is in close contact with the inner surface of the dielectric substrate 11, and the flexible printed circuit main area 29 is connected with the second radiator 21 through a short-circuit probe.
For the dielectric substrate 11, selecting dielectric substrates with different dielectric constants can be used to adjust the impedance of the antenna and the maximum radiation direction of the antenna, and the dielectric substrate with higher dielectric constant can reduce the size of the antenna. Adjusting the thickness of the dielectric substrate 11 can be used to adjust the bandwidth of the antenna, and the thicker the dielectric substrate 11, the wider the bandwidth of the antenna. Increasing the thickness of the dielectric substrate correspondingly increases the overall size of the device, and a trade-off between the bandwidth of the antenna and the size of the device is required, so the thickness of the dielectric substrate 11 needs to be determined in the simulation stage.
Referring to fig. 2, in the present embodiment, the plurality of serially connected main radiators (221, 223, 225, 227) are provided with four main radiators, which are a first main radiator 221, a second main radiator 223, a third main radiator 225, and a fourth main radiator 227, which are serially connected in sequence, respectively, and the plurality of serially connected main radiators (221, 223, 225, 227) are connected to the impedance matching network of the flexible printed circuit board main area 29. The first main radiator 221 is connected to the second main radiator 223 through a first microstrip line 226, the second main radiator 223 is connected to a third main radiator 225 through a second microstrip line 224, the third main radiator 225 is connected to a fourth main radiator 227 through a third microstrip line 222, and the fourth main radiator 227 is connected to one end of the impedance matching network through a fourth microstrip line 220. The impedance matching network comprises a plurality of inductors or capacitors connected in series or in parallel and is used for assisting in adjusting the impedance of the antenna and reducing the reflection from the source end to the antenna.
The main radiators (221, 223, 225, 227) are connected in series, the impedance and the radiation direction of the antenna can be adjusted by changing the length and width of the main radiators (221, 223, 225, 227), and the impedance of the antenna can be adjusted by changing the width of the microstrip lines (226, 224, 222, 220). The sizes of the main radiator and the microstrip line are easy to change in the debugging process, and the work is focused on the main radiator and the microstrip line.
As shown in fig. 3, the second radiator 21 is slotted to change a current path and fine-tune an antenna impedance. The longer the slot length, the longer the current path, and the lower the antenna resonant frequency.
Further, the two short-circuit probes are provided, and are respectively a first probe 290 and a second probe 291, and are disposed on one side (left side) of the flexible circuit board main region 29 close to the fourth microstrip line 220, and located at upper and lower ends of the side. The short-circuit probe passes through the through hole in the dielectric substrate 11, and electrically connects the ground of the flexible wiring board main region 29 to the second radiator 21. A through hole with exposed copper is arranged on the ground of the flexible circuit board main area 29, the through hole penetrates through the inner surface of the medium substrate 11 from the outer surface of the medium substrate 11, and the short circuit probe and the through hole with exposed copper are connected together through soldering to form electrical connection. The shorting probes (290, 291) are both located on the left side of the flex circuit board. Moving the shorting probes (290, 291) up and down changes the antenna current path length. After the position of the probe is determined through simulation, fine adjustment is carried out in the debugging process, and finally the position of the probe is determined.
The main radiators (221, 223, 225, 227), the second radiator 21, the short-circuit probe 291 and the microstrip lines (226, 224, 222, 220) are all made of metal.
The main radiator and the microstrip line are made of base material copper on the flexible circuit board. The shorting probes (290, 291) are composed of a metal that is easily soldered. The second radiator 21 is made of a metal having a relatively large physical strength, and serves as a part of the antenna, and can increase the physical strength of the entire wireless device 10 provided with the antenna 20.
Other devices including a main control device, a sensor, a communication unit, an energy acquisition unit and the like are arranged on the main area 29 of the flexible circuit board. The main control is used for processing sensor data and controlling a communication unit, the sensor adopts a temperature sensor to acquire the ambient temperature, other types of sensors can be added, the communication unit is used for communicating with a terminal, and the energy acquisition unit is used for acquiring the energy in the environment and providing the electric energy of each device. After the energy acquisition unit acquires the energy sent by the communication terminal, the master control driving sensor works to acquire temperature data, the antenna switch is switched to the communication unit, and the communication unit is controlled to send the data to the communication terminal. The communication terminal can send out electromagnetic waves, and signals of the electromagnetic waves can be collected by the energy collecting unit.
As shown in fig. 4 to 6, the wireless device 10 incorporates the antenna 20 described above. The wireless device 10 further includes a housing, wherein the housing includes a top case 101 and a bottom case. The overall shape of the shell is a hollow cylinder, and the hollow part is shown as 109 in fig. 6, and the shell is suitable for being embedded on cylindrical objects such as high-voltage cables, high-voltage cable connectors and the like. The bottom case includes an outer wall 102, an inner wall 104, and a bottom case bottom 103, and the bottom case bottom 103 integrally connects the outer wall 102 and the inner wall 104. The antenna portion shown in fig. 1 is embedded in the bottom housing shown in fig. 6, and then covered by the top housing 101, to form a complete wireless device 10.
Although the antenna device and the application scenario thereof provided by the embodiments of the present application have been described in detail, the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present application, and all such changes and substitutions are intended to be covered by the scope of the present application. Accordingly, the subject matter of this specification should not be construed as limiting the application.
Claims (10)
1. An antenna, characterized by: the medium substrate is hollow cylindrical, a flexible circuit board is arranged on the outer surface of the medium substrate, a plurality of main radiating bodies and impedance matching networks which are connected in series are distributed on the flexible circuit board, the second radiating bodies are in close contact with the inner surface of the medium substrate, and the flexible circuit board is electrically connected with the second radiating bodies through short circuit probes.
2. The antenna of claim 1, wherein: the dielectric substrate with different dielectric constants can be used for adjusting the impedance of the antenna and the maximum radiation direction of the antenna, and the thickness of the dielectric substrate is adjusted to adjust the bandwidth of the antenna.
3. The antenna of claim 1, wherein: the plurality of main radiators are connected in series and then connected with one end of the impedance matching network; the adjacent main radiators and the impedance matching network are connected through microstrip lines; the length and width of the main radiator can be changed to adjust the impedance and radiation direction of the antenna, and the width of the microstrip line can be changed to adjust the impedance of the antenna.
4. The antenna of claim 1, wherein: the impedance matching network comprises a plurality of inductors or capacitors connected in series or in parallel and is used for assisting in adjusting the impedance of the antenna and reducing the reflection from the source end to the antenna.
5. The antenna of claim 1, wherein: the second radiator is provided with a slot and used for changing a current path and finely adjusting the impedance of the antenna.
6. The antenna of claim 1, wherein: the short circuit probe passes through the dielectric substrate to with the earth and the second irradiator electrical connection of flexible line way board main area, the short circuit probe is located one side of flexible line way board, and a plurality of main irradiators are established ties the back and are connected with the one end of impedance matching network on this side, the short circuit probe is provided with two, and the upper and lower position of adjusting two short circuit probes can change antenna current path length.
7. The antenna of claim 1, wherein: still overall arrangement has master control, sensor, communication unit, energy acquisition unit on the flexible line way board, the master control is used for handling sensor data, control communication unit, the sensor is used for gathering ambient temperature, communication unit is used for communicating with communication terminal, energy acquisition unit is arranged in gathering the energy in the environment to provide the electric energy.
8. The antenna of claim 1, wherein: the main radiator, the second radiator and the short circuit probe are all made of metal materials.
9. The antenna of claim 1, wherein: the flexible circuit board comprises a flexible circuit board main area, the impedance matching network and the short circuit probe are located at the flexible circuit board main area, and the main radiating body is located outside the flexible circuit board main area.
10. A wireless device, characterized by: the antenna is arranged in the antenna and comprises a shell, wherein the overall appearance of the shell is a hollow cylinder and comprises a top shell and a bottom shell; the bottom shell is used for embedding the antenna and comprises an outer wall, an inner wall and a bottom shell bottom, the outer wall and the inner wall are connected together to form a whole at the bottom of the bottom shell, and the top shell is buckled on the bottom shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828733.4A CN113594689B (en) | 2021-07-22 | 2021-07-22 | Antenna and wireless device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828733.4A CN113594689B (en) | 2021-07-22 | 2021-07-22 | Antenna and wireless device |
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| CN113594689A true CN113594689A (en) | 2021-11-02 |
| CN113594689B CN113594689B (en) | 2024-06-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552180A (en) * | 2021-12-29 | 2022-05-27 | 浙江清华柔性电子技术研究院 | Antenna structure and preparation method thereof |
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Cited By (2)
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| CN114552180B (en) * | 2021-12-29 | 2024-01-09 | 浙江清华柔性电子技术研究院 | Antenna structure and preparation method thereof |
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| CN113594689B (en) | 2024-06-07 |
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