CN111490359A - UWB basic station and UWB basic station's antenna mounting structure - Google Patents
UWB basic station and UWB basic station's antenna mounting structure Download PDFInfo
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- CN111490359A CN111490359A CN201910076187.6A CN201910076187A CN111490359A CN 111490359 A CN111490359 A CN 111490359A CN 201910076187 A CN201910076187 A CN 201910076187A CN 111490359 A CN111490359 A CN 111490359A
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- 238000004891 communication Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000000523 sample Substances 0.000 claims abstract description 15
- 230000004913 activation Effects 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000013178 mathematical model Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003658 microfiber Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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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
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
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Abstract
The invention relates to an antenna mounting structure of a UWB (ultra-wide band) base station, which comprises a mounting table, wherein the mounting table comprises a medium substrate, the two sides of the medium substrate are respectively connected with a top plate and a bottom plate, a patch unit is arranged on the top plate, a metal probe connected with a patch is arranged between the top plate and the bottom plate, the metal probe forms an equivalent inductor, and the patch unit and the equivalent inductor are connected in parallel to form a parallel resonant circuit; the UWB base station clock synchronization system further comprises a signal processing module, a UWB radio frequency module and a communication interface module which are connected with the signal processing module, an antenna connected with the UWB radio frequency module, and a synchronization module used for realizing clock synchronization with other UWB base stations.
Description
Technical Field
The invention belongs to the field of antennas, and particularly relates to a UWB base station and an antenna mounting structure of the UWB base station.
Background
With the rapid development of wireless communication technology, people put forward higher requirements on wireless communication, and as a new short-distance wireless communication technology, UWB (ultra wide band) wireless communication technology gradually becomes a trend of current wireless communication technology development due to its characteristics of high transmission rate, low power consumption, good security, strong anti-multipath capability, low cost, and the like.
At present, the UWB base station antenna is often inconvenient and time-consuming to install in a miniaturized low-height scene. The conventional UWB antenna is a PCB antenna, and if the size of the conventional UWB antenna is changed, the pattern of the conventional UWB antenna is depressed and the impedance bandwidth is low.
Disclosure of Invention
The invention aims to provide a UWB base station and an antenna mounting structure of the UWB base station, and solves the problem that the UWB base station is inconvenient to mount under the small-sized low-height scene.
The novel purpose of the invention is realized by the following steps:
an antenna mounting structure of a UWB base station comprises a mounting platform, wherein the mounting platform comprises a medium substrate, the two sides of the medium substrate are respectively connected with a top plate and a bottom plate, a patch unit is arranged on the top plate, a metal probe connected with a patch is arranged between the top plate and the bottom plate, the metal probe forms an equivalent inductor, and the patch unit and the equivalent inductor are connected in parallel to form a parallel resonance circuit;
the system also comprises a signal processing module, a UWB radio frequency module and a communication interface module which are connected with the signal processing module, an antenna connected with the UWB radio frequency module, and a synchronization module used for realizing clock synchronization with other UWB base stations.
Preferably, the UWB base station further comprises a tag activation and communication module for implementing activation control and/or data transmission of a matching UWB electronic tag;
UWB radio frequency module and label activation and communication module connect in signal processing module's SPI bus, communication interface module connects in signal processing module's USB bus.
Preferably, the UWB radio frequency module is a UWB radio frequency module for processing 6.5GHZ wireless signals, and the tag activation and communication module is a tag activation and communication module for processing 5.8GHZ wireless signals.
Preferably, the UWB base station is a portable base station, a mobile base station or a fixed base station.
Preferably, the center of mount table is provided with the connecting hole, the connecting hole in-connection has the antenna, be provided with the antenna reflection board on the mount table, the antenna reflection board uses the connecting hole to connect arbitrary two diagonals as the center, and wherein the periphery that one side diagonal formed is the face that the arc has certain slope, forms a perpendicular corner cut with the peripheral butt joint point of the another side that the arc slope corresponds, and the corner cut forms the third reflecting plate face for two faces each excision 8 mm.
Preferably, the patch unit includes a plurality of slot equivalent capacitors and a plurality of patches, and a patch is disposed between two adjacent slot equivalent capacitors.
Preferably, the small foot surface of the antenna is perpendicular to the corner cutting surface of the antenna reflector plate.
Preferably, the antenna and the antenna reflecting plate are isolated by a mounting table, the height is 8mm, and the length of an ejector pin for connecting the SMA with the antenna and the reflecting plate is greater than 8 mm.
Compared with the prior art, the novel and beneficial technical effects of the invention are as follows:
1. parallel resonance is a complete compensation, and the power supply does not need to provide reactive power, but only provides the active power required by the resistor. At resonance, the total current of the circuit is minimal, while the current of the branch tends to be greater than the total current of the circuit, and therefore, parallel resonance is also referred to as current resonance. Therefore, the parallel resonant circuit is formed by connecting the slot equivalent capacitor and the equivalent inductor in parallel, the phenomenon that the center of an antenna directional pattern of the antenna is sunken in the prior art can be improved, the antenna gain is high, the impedance bandwidth is high, and the good antenna performance is guaranteed.
2. The UWB base station and electronic samples such as matched UWB electronic tags form a positioning system based on UWB, high-precision positioning of articles with UWB electronic samples can be achieved, and positioning stability is good. And the UWB electronic standard matched with the UWB electronic standard has low cost, less power consumption and small volume, and can reduce the realization cost of positioning.
Drawings
Fig. 1 is a front view of a first embodiment of the present invention.
Fig. 2 is a side view of a first embodiment of the invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a metal probe and a base plate in a second embodiment of the invention.
Fig. 5 is a block diagram of a UWB base station in accordance with an embodiment of the present invention.
The reference numerals in the figures denote the meanings:
1. an installation table; 2. a dielectric substrate; 3. a top plate; 4. a base plate; 5. a patch unit; 51. a gap equivalent capacitance; 52. pasting a piece; 6. a signal processing module; 7. a UWB radio frequency module; 8. an antenna; 9. An interface module; 10. and connecting the holes.
Detailed Description
The novel forms of the invention are further described below with reference to specific examples:
the first embodiment is as follows:
the utility model provides a UWB base station's 8 mounting structure of antenna, includes mount table 1, mount table 1 includes medium base plate 2, the both sides of medium base plate 2 are connected with roof 3 and bottom plate 4 respectively, be provided with paster 52 unit 5 on the roof 3, be provided with the metal probe who is connected with paster 52 between roof 3 and the bottom plate 4, metal probe forms equivalent inductance, paster 52 unit 5 and equivalent inductance are parallelly connected in order to form parallel resonance circuit.
A dielectric substrate 2, a first floor board arranged on the top layer of the dielectric substrate 2 and a second floor board arranged on the bottom layer of the dielectric substrate 2. The first floor and the second floor are arranged in parallel. The patch 52 unit 5 is disposed on the first floor, and specifically, the patch 52 unit 5 includes a plurality of slot equivalent capacitors 51 and a plurality of patches 52, and each slot equivalent capacitor 51 separates two adjacent patches 52.
A plurality of metal probes connected to the patches 52 are provided between the first and second ground plates, each metal probe forming an equivalent inductance. The slot equivalent capacitance 51 and the equivalent inductance are connected in parallel to form a parallel resonant circuit.
In this embodiment, the number of the metal probes can be selected according to actual conditions, and meanwhile, the setting positions of the metal probes also need to be adjusted according to actual conditions, and the impedance bandwidth of the UWB base station antenna 8 can be detected through debugging at different positions, so that each metal probe can be set by determining a better setting position.
In the circuit in which the equivalent inductance and the slot equivalent capacitance 51 are connected in parallel, when the size of the slot equivalent capacitance 51 is just enough to make the voltage and the current in the circuit in the same phase, that is, the power supply electric energy is all consumed by the resistance, and becomes a resistance circuit, it is called as parallel resonance. Parallel resonance is a complete compensation, and the power supply does not need to provide reactive power, but only provides active power required by the resistor. At resonance, the total current of the circuit is minimal, while the current of the branch tends to be greater than the total current of the circuit, and therefore, parallel resonance is also referred to as current resonance. Therefore, the parallel resonant circuit is formed by connecting the slot equivalent capacitor 51 and the equivalent inductor in parallel, the phenomenon that the center of an antenna 8 directional diagram of the antenna 8 is sunken in the prior art can be improved, the antenna 8 has high gain, and the impedance bandwidth is high, so that the good performance of the antenna 8 is ensured.
Each patch 52 may be a circular patch 52, wherein the radii of different circular patches 52 are different, and the centers of circles where each circular patch 52 is located coincide to form a gap between adjacent circular patches 52. It should be understood that the shape of the patch 52 is not limited in this embodiment, and in other embodiments, the patch 52 may also be designed in other shapes, such as a rectangle, an ellipse, a diamond, etc., only that the gap between adjacent patches 52 can be set with the gap equivalent capacitor 51.
The number of the patches 52 can be selected according to actual design requirements, and accordingly, the equivalent gap capacitance 51 between adjacent patches 52 can also be correspondingly adjusted along with the adjustment of the number of the patches 52.
The UWB base station antenna 8 is a ring structure having a thickness of 6mm and a radius of 43 mm. Therefore, the UWB base station antenna 8 can be suitable for installation in a small-sized low-height scene, the flexibility of installation of the UWB base station antenna 8 is improved, and meanwhile, the occupied space of the antenna 8 is reduced.
In order to reduce the processing difficulty and the installation difficulty of the UWB base station antenna 8 and ensure the gap between the adjacent patches 52, the center of each patch 52 coincides with the center of the ring structure.
Still referring to fig. 1, the second floor is provided with a positioning through hole, the UWB base station antenna 8 further includes a positioning connector 150, and one end of the positioning connector 150 passes through the positioning through hole to be fixedly connected with the dielectric substrate 2, so as to fix the UWB base station antenna 8.
In order to further realize the stability of the parallel resonant circuit, the extending direction of each metal probe is perpendicular to the plane direction of the first floor or the plane direction of the second floor. A plurality of patches 52 are printed, engraved or covered on the dielectric substrate 2 to form the UWB base station antenna 8.
The dielectric substrate 2 can be made of Rogers5880 material, and the dielectric substrate 2 can be a dielectric substrate 2 with a dielectric constant of 2.2. The Rogers5880 material is made of polytetrafluoroethylene glass fiber reinforced materials, and the microfibers in the board are randomly distributed in the material, so that the requirements on the strength of the board in the circuit application process and the production process can be greatly guaranteed. Meanwhile, the plate has extremely low dielectric loss, so that the plate is very suitable for high-frequency and wide-frequency band application requiring minimum dispersion and loss, and the highest supported frequency of the plate can reach a Ku wave band or even higher frequency. In addition, the Rogers5880 material has extremely low moisture absorption rate which is only 0.02%, the characteristic makes the Rogers5880 material an ideal choice for high-humidity environment application, and the communication performance of the UWB base station antenna 8 can be effectively ensured by adopting the dielectric substrate 2 made of the Rogers5880 material with the dielectric constant of 2.2.
The RFID tag is characterized by further comprising an antenna 8UWB radio frequency module 7, a clock generation module, a signal processing module 6, a communication interface module 9(WIFI module), a tag activation and communication module and a power supply conversion module. The UWB radio frequency module 7 and the label activation and communication module are connected to the SPI bus of the signal processing module 6, and the communication interface module 9 is connected to the USB bus of the signal processing module 6. The antenna 8 is used for receiving microwave signals in the air. The UWB radio frequency module 7 is used to demodulate/modulate the microwave signal. The clock generation module is used for outputting a local precision clock to the signal processing module 6. The signal processing module 6 includes: the device comprises a positioning parameter extraction module, a synchronization module and a module for unpacking/assembling data. The synchronization module is used for carrying out clock synchronization on other UWB base stations so as to further improve the positioning accuracy. The WIFI module is used for data (such as positioning parameters) transmission between UWB base stations and between the UWB base stations and the background server, and aims to avoid occupying a 6.5GHZ positioning channel. The label activation and communication module is used for auxiliary communication with the label, the frequency of 433M is adopted, activation control of the label and data (such as activation) transmission between the label and a base station can be carried out, and after the activation module is adopted, the equipment can start the positioning module of the label only when the equipment enters a detection area, so that the service life of the label is prolonged.
Some device location systems that employ the above-described UWB base station include: the system comprises a UWB electronic tag, at least three UWB base stations (one UWB base station serves as a main base station, and the other UWB base stations serve as slave base stations), a processing device (not shown in the figure), a background server, a video identification subsystem and an entrance and exit activation and transaction module. The background server is in communication connection with the main base station and is used for managing the position information of the equipment.
The UWB base station is used for receiving the wireless positioning signal emitted by the UWB electronic tag 1 and respectively obtaining the parameter value of each UWB base station relative equipment according to the wireless positioning signal. The UWB base station parameter referred to herein may be various parameters capable of calculating the location of the device through a mathematical model, preferably a Received Signal Strength (RSSI), a time of arrival (TOA), a time difference of arrival (TDOA), an angle of arrival (AOA), and more preferably a time difference of arrival (TDOA).
The processing means (not shown in the figure) of the positioning system is arranged to determine the position information of the device based on the parameter values from the at least three UWB base stations, i.e. to substitute the positioning parameter values determined by the UWB base stations into the mathematical model to determine the position information of the device. The processing device can be an independent device, and can also be arranged in the main base station or the background server, if the processing device is the independent device, the processing device has a communication function so as to realize the communication between the processing device and the base station and the background server.
In the second embodiment, the first embodiment of the method,
the utility model provides a UWB basic station's 8 mounting structure of antenna, including the UWB basic station in embodiment one, the center of mount table 1 is provided with connecting hole 10, connecting hole 10 in-connection has antenna 8, be provided with 8 reflecting plates of antenna on the mount table 1, 8 reflecting plates of antenna use connecting hole 10 to connect arbitrary two diagonal lines as the center, wherein the periphery that one side diagonal line formed has the face of certain slope for the arc, the peripheral butt joint point of another side that corresponds with the arc is domatic forms a perpendicular corner cut, the corner cut is two faces and respectively cuts 8mm and form the third reflecting plate face. The antenna 8 and the antenna 8 reflecting plate are isolated by the mounting table 1, the height is 8mm, and the length of an ejector pin for connecting the antenna 8 and the reflecting plate by the SMA is larger than 8 mm.
The above embodiments are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention, so: all equivalent changes made according to the novel structure, shape and principle of the invention are intended to be covered by the novel protection scope of the invention.
Claims (8)
1. The UWB base station is characterized by comprising a mounting table (1), wherein the mounting table (1) comprises a medium substrate (2), a top plate (3) and a bottom plate (4) are respectively connected to two sides of the medium substrate (2), a patch (52) unit (5) is arranged on the top plate (3), a metal probe connected with the patch (52) is arranged between the top plate (3) and the bottom plate (4), the metal probe forms an equivalent inductor, and the patch (52) unit (5) and the equivalent inductor are connected in parallel to form a parallel resonant circuit;
the UWB base station clock synchronization system further comprises a signal processing module (6), a UWB radio frequency module (7) and a communication interface module (9) which are connected to the signal processing module (6), an antenna (8) which is connected to the UWB radio frequency module (7), and a synchronization module which is used for realizing clock synchronization with other UWB base stations.
2. The UWB base station of claim 1 wherein: the UWB base station also comprises a tag activation and communication module for realizing activation control and/or data transmission of a matched UWB electronic tag;
UWB radio frequency module (7) and label activation and communication module connect in the SPI bus of signal processing module (6), communication interface module (9) are connected in the USB bus of signal processing module (6).
3. A UWB base station according to claim 2, characterized in that: the UWB radio frequency module (7) is used for processing a 6.5GHZ wireless signal, and the label activation and communication module is used for processing a 5.8GHZ wireless signal.
4. An antenna mounting structure for a UWB base station according to claim 1, wherein: the patch (52) unit (5) comprises a plurality of gap equivalent capacitors (51) and a plurality of patches (52), and a patch (52) is arranged between every two adjacent gap equivalent capacitors (51).
5. A UWB base station according to any of claims 1-4 wherein: the UWB base station is a portable base station, a mobile base station, or a fixed base station.
6. An antenna mounting structure of a UWB base station, characterized in that: the UWB base station comprises any one of claims 1-5, wherein a connecting hole (10) is formed in the center of the mounting table (1), an antenna (8) is connected in the connecting hole (10), a reflecting plate of the antenna (8) is arranged on the mounting table (1), the reflecting plate of the antenna (8) is connected with any two diagonals by taking the connecting hole (10) as the center, the periphery formed by one diagonal is a surface with a certain slope in an arc shape, the peripheral butt joint point of the other side corresponding to the arc-shaped slope surface forms a vertical chamfer angle, and the chamfer angle is formed by cutting 8mm of each of the two surfaces to form a third reflecting plate surface.
7. An antenna mounting structure for a UWB base station according to claim 6, wherein: and the small foot surface of the antenna (8) is vertical to the corner cutting surface of the antenna (8) reflecting plate.
8. An antenna mounting structure for a UWB base station according to claim 6, wherein: the antenna (8) and the antenna (8) reflecting plate are isolated by the mounting table (1), the height is 8mm, and the length of an ejector pin for connecting the antenna (8) and the reflecting plate by the SMA is larger than 8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076187.6A CN111490359A (en) | 2019-01-26 | 2019-01-26 | UWB basic station and UWB basic station's antenna mounting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910076187.6A CN111490359A (en) | 2019-01-26 | 2019-01-26 | UWB basic station and UWB basic station's antenna mounting structure |
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| CN111490359A true CN111490359A (en) | 2020-08-04 |
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| CN201910076187.6A Pending CN111490359A (en) | 2019-01-26 | 2019-01-26 | UWB basic station and UWB basic station's antenna mounting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114401483A (en) * | 2022-01-24 | 2022-04-26 | 北京宸控科技有限公司 | Portable converged communication base station based on high-precision positioning and positioning system |
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|---|---|---|---|---|
| JP2006311239A (en) * | 2005-04-28 | 2006-11-09 | Tomozo Ota | Radio ic tag device and rfid system |
| CN104733844A (en) * | 2015-03-21 | 2015-06-24 | 西安电子科技大学 | Planar-broadband dual-polarization base station antenna |
| CN204442708U (en) * | 2014-12-31 | 2015-07-01 | 深圳市金溢科技股份有限公司 | For the UWB base station of vehicle location |
| CN207818889U (en) * | 2018-01-31 | 2018-09-04 | 成都精位科技有限公司 | UWB antenna for base station and UWB positioning systems |
| CN210074162U (en) * | 2019-01-26 | 2020-02-14 | 云南中商正晓农业科技有限公司 | UWB basic station and UWB basic station's antenna mounting structure |
-
2019
- 2019-01-26 CN CN201910076187.6A patent/CN111490359A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006311239A (en) * | 2005-04-28 | 2006-11-09 | Tomozo Ota | Radio ic tag device and rfid system |
| CN204442708U (en) * | 2014-12-31 | 2015-07-01 | 深圳市金溢科技股份有限公司 | For the UWB base station of vehicle location |
| CN104733844A (en) * | 2015-03-21 | 2015-06-24 | 西安电子科技大学 | Planar-broadband dual-polarization base station antenna |
| CN207818889U (en) * | 2018-01-31 | 2018-09-04 | 成都精位科技有限公司 | UWB antenna for base station and UWB positioning systems |
| CN210074162U (en) * | 2019-01-26 | 2020-02-14 | 云南中商正晓农业科技有限公司 | UWB basic station and UWB basic station's antenna mounting structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114401483A (en) * | 2022-01-24 | 2022-04-26 | 北京宸控科技有限公司 | Portable converged communication base station based on high-precision positioning and positioning system |
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