CN210926323U - Strong penetration antenna device - Google Patents
Strong penetration antenna device Download PDFInfo
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- CN210926323U CN210926323U CN201922202948.6U CN201922202948U CN210926323U CN 210926323 U CN210926323 U CN 210926323U CN 201922202948 U CN201922202948 U CN 201922202948U CN 210926323 U CN210926323 U CN 210926323U
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Abstract
The utility model provides a have and pierce through antenna device by force, antenna device includes first irradiator, second irradiator, third irradiator and dielectric substrate. The first radiator slot is used for adjusting the impedance of the antenna, so that the effect of adjusting the resonant frequency can be achieved; a dielectric substrate with a corresponding dielectric constant is added between the first radiator and the second radiator according to requirements; the third radiator is used as a reflecting plate and is positioned below the second radiator, and the gain in the angle direction of 0 degree is increased; adding a low dielectric constant medium with a certain thickness right above the first radiator; the feed point is arranged on the first radiator, and the second radiator is grounded. The antenna device has strong penetrating performance, and can still smoothly transmit energy with the outside when being buried in reinforced concrete.
Description
Technical Field
The utility model relates to an antenna electronic equipment especially relates to a pierce through antenna device by force.
Background
Most of antennas are applied in free space or on the surface of an object, and particularly, most of antennas of electronic equipment are applied in the air, and a part of electronic equipment is placed on a wall, metal, the surface of skin and the like. The corresponding papers on free space antennas are in the vast majority. Few antenna design papers are available for studying severe electromagnetic propagation environments.
The severe electromagnetic propagation environment has the effects of attenuation, reflection, scattering and the like on electromagnetic waves, and when electronic equipment is placed in the environment such as reinforced concrete, the electromagnetic waves are difficult to transmit energy, so that the electronic equipment is difficult to even cannot communicate with the outside.
The receiving sensitivity of the passive tag chip is 10dBm or more lower than that of the active tag, so that the antenna design challenge of the application scene that the passive tag is placed in a severe electromagnetic propagation environment is more serious.
SUMMERY OF THE UTILITY MODEL
The utility model provides a bury strong antenna device that pierces through in reinforced concrete for solve the passive tag chip in abominable electromagnetic propagation environment (when placing concrete structure thing in if), and can't with the external world through under the condition of wired connection, through the difficult technical problem of antenna and external communication, its technical scheme as follows:
a strong penetration antenna device comprises a first radiator, a second radiator and a third radiator which are sequentially arranged from top to bottom, wherein the first radiator and the second radiator are made of metal materials, a dielectric substrate is arranged between the first radiator and the second radiator, the first radiator, the second radiator and the third radiator are all planar conductive structures, such as copper foils, and the thickness and the cross section have no special requirements.
The low-dielectric-constant medium with set thickness is added right above the first radiator, the first radiator is provided with a feed point, the feed point is connected into a feed system through an impedance matching network, and the second radiator is grounded through a grounding point.
The first radiator is designed to be grooved on the basis of a complete conductive plane to form local disconnection of a circuit, so that the distribution of an antenna electric field is adjusted, the antenna impedance is further adjusted, and the adjustment of resonant frequency is realized.
The printed circuit board of the electronic device is arranged below the second radiator, the printed circuit board is at least of a double-layer circuit board structure, the double-layer circuit board is installed on the second radiator through a welding process, the top surface of the double-layer circuit board is an element surface, the bottom surface of the double-layer circuit board is attached to the second radiator, and a ground signal of the double-layer circuit board is welded and conducted with the second radiator so as to enhance the reliability of the antenna.
The impedance matching network and the feed system are both positioned on a printed circuit board, and the feed point is connected with the printed circuit board of the electronic equipment through a feed line penetrating through the dielectric substrate.
The first radiator, the second radiator, the third radiator, the dielectric substrate and the printed circuit board are all positioned in the shell, the shell is made of high polymer materials, and the inner cavity of the shell is filled with a first low-dielectric-constant medium; and a second low dielectric constant medium is also filled between the second radiator and the third radiator, and the first low dielectric constant medium and the second low dielectric constant medium are the same or different.
The impedance matching network includes multiple sets of impedance tuning units in series and parallel.
The third radiator adopts metal materials as a reflecting plate, the length of the third radiator is longer than that of the second radiator, and the gain in the angle direction of 0 degree is increased.
The thickness of the low dielectric constant medium right above the first radiator is not less than 5 mm.
The feed point can be arranged at any position on the first radiator and the grounding point can be arranged at any position on the second radiator.
The feeding point and the grounding point are respectively arranged behind the first radiator and the second radiator, and the direction of the plane of the first radiator is perpendicular to the direction of the line connecting the two points.
The first radiator and the second radiator are arranged on different planes at set distances and are arranged in parallel, and the plane sizes and the shapes of the radiators are the same.
The utility model has the following obvious advantages:
(1) the utility model discloses simple structure can come the macro-scale equipment according to the performance demand, also can be in the miniaturized equipment under the circumstances of considering reinforced concrete picture structural strength.
(2) The utility model provides a perfect impedance matching network can be under the condition that does not change the antenna shape, changes the resonant frequency of antenna according to the frequency channel demand.
(3) The utility model discloses an electronic equipment, the signal attenuation is less after reinforced concrete in the landfill, compares in free space transmission distance reduction range less.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced 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 without creative efforts.
Fig. 1 is a schematic cross-sectional structure diagram of a high-penetration antenna device provided by the present invention;
fig. 2 is a schematic longitudinal sectional view of the high-penetration antenna device according to the present invention;
fig. 3 is a schematic structural view of a half of a diagonal plane of a high-penetration antenna device according to the present invention;
fig. 4 is a schematic structural view of another half of a diagonal plane of a high-penetration antenna device provided by the present invention;
fig. 5 is a schematic structural diagram of a high-penetration antenna device provided by the present invention;
fig. 6 is another schematic view of a high penetration antenna apparatus provided by the present invention;
fig. 7 is a schematic diagram illustrating a split structure of a high-penetration antenna apparatus provided in the present invention;
FIG. 8 is a graph of the result of S11 moving the feed point to various positions according to the transverse medial axis;
FIG. 9 is a two-dimensional directional result diagram of moving the feed point to various positions according to the transverse medial axis;
fig. 10 is a 3D diagram of the antenna radiation direction of the high-penetration antenna device provided by the present invention;
fig. 11 is a schematic diagram of an overall structure of a high-penetration antenna device provided in the present invention;
fig. 12 is a logic diagram of a matching network of a high-penetration antenna apparatus according to the present invention.
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 reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
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 utility model provides an in the embodiment, pierce through antenna device by force and install at the passive tag chip to place the reinforced concrete in the passive tag chip in, the following will be described in detail the structure of antenna respectively, this antenna device also can set up in other electronic equipment.
As shown in fig. 1 to 4, the high-penetration antenna device mounted on the electronic apparatus 10 includes: the radiator comprises a shell 1, a first radiator 2, a dielectric substrate 3, a second radiator 4, a printed circuit board assembly 5, a third radiator 6 and a low-dielectric-constant filling medium 7.
The housing 1 is of a cuboid structure and comprises a housing top 101, a housing bottom 103 and four side walls, the side walls are a housing left wall 105, a housing right wall 106, a housing front wall 104 and a housing rear wall 102 respectively, and the housing 1 is made of high polymer materials.
The first radiator 2 is bordered by the case top 101, the dielectric substrate 3 is disposed under the first radiator 2, the second radiator 4 is disposed under the dielectric substrate 3, the printed circuit board 5 is disposed under the second radiator 4, the ground of the printed circuit board 5 is in full contact with the second radiator 2, the low-dielectric-constant filling medium 7 is disposed under the second radiator 2 and surrounds the printed circuit board 5, the third radiator 6 is disposed under the low-dielectric-constant filling medium 7, and the case bottom 103 is disposed under the third radiator 6.
It can be seen that, in the housing 1, the first radiator 2, the second radiator 4, and the third radiator 6 are sequentially arranged from top to bottom, and the first radiator 2, the second radiator 4, and the third radiator 6 are made of metal materials, such as copper, aluminum, and steel, and are selected according to specific construction requirements.
The first radiator 2 is provided with a slot and used for adjusting the antenna impedance to achieve the effect of adjusting the resonant frequency, and the third radiator 6 is used as a reflecting plate to increase the gain in the angle direction of 0 degree.
The first radiator 2 and the second radiator 4 are arranged in parallel, the plane size and shape of the radiators can be the same, a dielectric substrate 3 is filled between the first radiator 2 and the second radiator 4, the dielectric substrate 3 is selected according to the requirements of the corresponding dielectric constant and loss tangent value, and materials such as various high polymer materials, even modified materials specially made according to simulation, ceramics, rubber, glass and the like can be adopted.
The third radiator 6 is disposed below the second radiator 4, and a medium 7 with a low dielectric constant is filled between the two radiators, so as to enhance the structural strength of the electronic device. The medium can adopt air, and can also be selectively filled with other media with lower dielectric constant. Further, as shown in fig. 5 and 6, the length of the third radiator 6 is longer than that of the second radiator 4, which is beneficial to increase the gain in the upward direction, so as to increase the transmission distance of the electronic device 10 in the upward direction under the same condition.
As shown in fig. 7, a printed circuit board 5 is arranged between the second radiator 4 and the third radiator 6, said printed circuit board 5 being used to carry an impedance matching network 804 and a signal source 805.
The first radiator 2, the second radiator 4, the dielectric substrate 3, the printed circuit board 5, the third radiator 6 and the low-k dielectric 7 are all disposed in the housing 1, wherein the low-k dielectric 7 fills the inner cavity of the housing 1.
In practice, a low-k dielectric with a certain thickness is added right above the first radiator 2. The thickness of the shell top 101 can be set to be higher than 5mm, and when the electronic device 10 is buried in reinforced concrete, a distance of more than 5mm is ensured between the first radiator 2 and the concrete, so that the radiation efficiency of the antenna is ensured.
It can be seen that, in addition to fig. 1 and 2, in order to more clearly explain the structure of the antenna, fig. 3 and 4 show oblique view, fig. 5 and 6 show oblique top view and oblique bottom view of the high-penetration antenna device, and fig. 7 shows a disassembled view (exploded view) of the high-penetration antenna device.
As shown in fig. 11, the first radiator 2 is provided with a feeding point 802, the first radiator 2 is connected to a feeding line 803 through the feeding point 802, and the feeding line 803 may be made of a conductive material such as a copper wire, a copper foil, an aluminum wire, or a metal thimble.
The other end of the feed line 803 is connected to an impedance matching network 804, and the impedance matching network 804 is connected to a signal source 805 through a microstrip line, so that the feed point 802 is connected to the printed circuit board 5 assembly of the electronic device through the feed line 803 penetrating through the dielectric substrate 3.
The impedance matching network 804 is disposed on the printed circuit board 5, functions to control the reflection of signals, and may include a plurality of sets of components (impedance tuning units) connected in series and in parallel, and for those skilled in the art, the impedance matching network may be adjusted accordingly according to the impedance of the antenna. The present embodiment provides one of the combination manners, as shown in fig. 12, including a first device 8041, a second device 8042, a third device 8043, and a fourth device 8044, where the first device 8041 is connected to the second device 8042, a line between the first device 8041 and the second device 8042 is grounded through the third device 8043, the first device 8041 is connected to a signal source 805, the second device 8042 is connected to a feeding point 802 through a feeder 803, and a line between the second device 8042 and the feeding point 802 is grounded through the fourth device 8044. The first, second, third and fourth devices 8041, 8042, 8043, 8044 may be capacitors, resistors, inductors, etc. in use.
When the electronic device outputs a signal, the input terminal of the impedance matching network 804 is connected to the output terminal of the signal source 805, and the output terminal of the matching network 804 is connected to the feeding point 802 through the feed 803. The signal source 805 serves as one type of feed system such that the feed point is connected to the feed system through an impedance matching network. As can be seen from fig. 12, the first device 8041 serves as an input and the second device 8042 serves as an output.
The second radiator 4 is provided with a grounding point 807, and the grounding point 807 is connected to the ground 801 through a wire, so that the second radiator 4 is grounded.
The feeding point 802 may be anywhere on the first radiator 2 and the grounding point 807 may be anywhere on the second radiator 4. For the convenience of the implementation of this embodiment, the feeding point 802 and the grounding point 807 may be respectively disposed behind the first radiator 2 and the second radiator 4, and the line connecting the two points is perpendicular to the plane of the first radiator 2.
S11 of the feeding point 802 changes along the transverse center line of the electronic device 10 from the left edge of the first radiator 2 to the center of the first radiator 2 as shown in fig. 8, it can be seen from fig. 8 that the resonant frequency of the antenna changes regularly at different positions of the feeding point 802, and the impedance of the corresponding antenna also changes. Meanwhile, as shown in fig. 9, when the feeding point 802 moves to a different position, the gain (without considering return loss) of the antenna at a specified frequency (925 MHz selected in this embodiment) changes slightly, that is, the impedance of the antenna changes on the premise of moving only the feeding point 802, and it is known that the directivity of the antenna radiation does not change from the antenna radiation direction 3D diagram shown in fig. 10. By matching the position of the antenna feed point 802 and different parameter selections of the first device 8041, the second device 8042, the third device 8043 and the fourth device 8044 of the impedance matching network 4, the radiation performance of the antenna at the designated frequency can be optimized.
Further, the impedance matching network 804 and the signal source 805 are disposed on the printed circuit board 5, the printed circuit board 5 has at least a double-layer circuit board structure (the top surface and the bottom surface are double layers), and the double-layer circuit board is mounted on the second radiator 4 by using a soldering process, an element surface of the double-layer circuit board is upward, the bottom surface is closely attached to the second radiator 4, and a ground signal of the double-layer circuit board is soldered to the second radiator 4 to enhance the reliability of the antenna. The ground of the printed circuit board assembly of the electronic device is brought into full contact with the second radiator. At the same time, the ground signal of the double layer circuit board is grounded 806.
That is, the double-layer circuit board is mounted on the second radiator 4 by using a welding process, the element surface of the double-layer circuit board is upward, the bottom surface of the double-layer circuit board is attached to the second radiator 4, and the ground signal of the double-layer circuit board is welded and conducted with the second radiator 4, so that the reliability of the antenna is enhanced.
Through the structure, the strong penetration antenna device has strong penetration performance, and can still smoothly transmit energy with the outside when being buried in reinforced concrete.
801 and 806 are the electrical ground signal of the ground of the whole device, marked with the electrical sign of the ground, which means that the electrical ground signal of the circuit board and the electrical ground signal of the antenna are in communication.
According to the embodiments, the antenna design scheme provided by the application enables the radiation performance of the antenna to be optimal by adjusting the position of the feed point and the device parameters of the matching network; the third radiator is added as a reflecting plate to adjust the directivity of the antenna, so that the gain of the antenna in the available direction reaches an excellent level; the loss of radiation energy of the antenna when the antenna is buried in a severe electromagnetic radiation environment such as reinforced concrete is reduced by increasing the thickness of the shell top. In conclusion, the effect of strong penetrability can be achieved.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed 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, features defined as "first", "second", 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.
Although the electronic device and the antenna apparatus provided in 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 included within the scope of the present application. Accordingly, the subject matter of this specification should not be construed as limiting the application.
Claims (10)
1. A high-penetration antenna device, comprising: the antenna comprises a first radiator, a second radiator and a third radiator which are sequentially arranged from top to bottom, wherein the first radiator and the second radiator are made of metal materials, a medium substrate is arranged between the first radiator and the second radiator, the first radiator, the second radiator and the third radiator are plane conductive structures, a low-dielectric-constant medium with set thickness is added right above the first radiator, the first radiator is provided with a feed point, the feed point is connected into a feed system through an impedance matching network, and the second radiator is grounded through a ground point.
2. The high-penetration antenna apparatus according to claim 1, wherein: the first radiator is designed to be grooved on the basis of the complete conductive plane, and the circuit is partially disconnected.
3. The high-penetration antenna apparatus according to claim 1, wherein: a printed circuit board of the electronic device is arranged below the second radiator, the printed circuit board is at least of a double-layer circuit board structure, the double-layer circuit board is installed on the second radiator by adopting a welding process, the top surface of the double-layer circuit board is an element surface, the bottom surface of the double-layer circuit board is tightly attached to the second radiator, and a ground signal of the double-layer circuit board is welded and conducted with the second radiator so as to enhance the reliability of the antenna; the impedance matching network and the feed system are both positioned on a printed circuit board, and the feed point is connected with the printed circuit board of the electronic equipment through a feed line penetrating through the dielectric substrate.
4. The high-penetration antenna device according to claim 3, wherein: the first radiator, the second radiator, the third radiator, the dielectric substrate and the printed circuit board are all positioned in the shell, the shell is made of high polymer materials, and the inner cavity of the shell is filled with a first low-dielectric-constant medium; and a second low dielectric constant medium is also filled between the second radiator and the third radiator, and the first low dielectric constant medium and the second low dielectric constant medium are the same or different.
5. The high-penetration antenna device according to claim 3, wherein: the impedance matching network includes multiple sets of impedance tuning units in series and parallel.
6. The high-penetration antenna apparatus according to claim 1, wherein: the third radiator adopts metal materials as a reflecting plate, the length of the third radiator is longer than that of the second radiator, and the gain in the angle direction of 0 degree is increased.
7. The high-penetration antenna apparatus according to claim 1, wherein: the thickness of the low dielectric constant medium right above the first radiator is not less than 5 mm.
8. The high-penetration antenna apparatus according to claim 1, wherein: the feed point can be arranged at any position on the first radiator and the grounding point can be arranged at any position on the second radiator.
9. The high-penetration antenna apparatus according to claim 1, wherein: the feeding point and the grounding point are respectively arranged behind the first radiator and the second radiator, and the direction of the plane of the first radiator is perpendicular to the direction of the line connecting the two points.
10. The high-penetration antenna apparatus according to claim 1, wherein: the first radiator and the second radiator are arranged on different planes at set distances and are arranged in parallel, and the plane sizes and the shapes of the radiators are the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202948.6U CN210926323U (en) | 2019-12-10 | 2019-12-10 | Strong penetration antenna device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922202948.6U CN210926323U (en) | 2019-12-10 | 2019-12-10 | Strong penetration antenna device |
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| Publication Number | Publication Date |
|---|---|
| CN210926323U true CN210926323U (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922202948.6U Active CN210926323U (en) | 2019-12-10 | 2019-12-10 | Strong penetration antenna device |
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| CN (1) | CN210926323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382852A (en) * | 2020-11-20 | 2021-02-19 | 深圳市德兴达科技有限公司 | Electronic equipment and double-antenna energy acquisition device |
-
2019
- 2019-12-10 CN CN201922202948.6U patent/CN210926323U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382852A (en) * | 2020-11-20 | 2021-02-19 | 深圳市德兴达科技有限公司 | Electronic equipment and double-antenna energy acquisition device |
| CN112382852B (en) * | 2020-11-20 | 2021-10-08 | 深圳市德兴达科技有限公司 | Electronic equipment and double-antenna energy acquisition device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: CHINA RAILWAY ENGINEERING SERVICE Co.,Ltd. Assignor: CHINA RAILWAY ENGINEERING EQUIPMENT GROUP Co.,Ltd. Contract record no.: X2023980041747 Denomination of utility model: A Strong Penetration Antenna Device Granted publication date: 20200703 License type: Common License Record date: 20230918 |
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| EE01 | Entry into force of recordation of patent licensing contract |