CN206022620U - A kind of 440MHz bar antennas with DC earthing function - Google Patents
A kind of 440MHz bar antennas with DC earthing function Download PDFInfo
- Publication number
- CN206022620U CN206022620U CN201621047073.7U CN201621047073U CN206022620U CN 206022620 U CN206022620 U CN 206022620U CN 201621047073 U CN201621047073 U CN 201621047073U CN 206022620 U CN206022620 U CN 206022620U
- Authority
- CN
- China
- Prior art keywords
- antenna
- radio frequency
- pcb board
- frequency connector
- inductance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052802 copper Inorganic materials 0.000 claims abstract description 13
- 239000010949 copper Substances 0.000 claims abstract description 13
- 238000009954 braiding Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 6
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
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- Details Of Aerials (AREA)
Abstract
A kind of 440MHz bar antennas with DC earthing function, including shell, radio frequency connector, coaxial line, pcb board, spring antenna, copper pipe and inductance.Shell acts primarily as the effect of protection inner antenna part, and radio frequency connector is the radio frequency interface of antenna, and for the connection between antenna and receiving device, one end of coaxial line is connected with radio frequency connector, and the other end is welded together with the microstrip line on pcb board；The other end of the microstrip line on pcb board is welded together with spring antenna；Microstrip line on pcb board by inductance with ground, namely the braiding layer of coaxial line be connected, inductance can ensure that the antenna direct-current short circuit be grounded, while with radio frequency choke effect；Copper pipe is enclosed within the shell of the radio frequency connector, with radio frequency connector directly contact；The effect of copper pipe is to increase the frequency bandwidth of antenna and reduces antenna dependence over the ground.Beneficial effect is antenna DC earthing, and with lightning protection function, radio-frequency performance is unrelated with the equipment that is installed.
Description
Technical field
The utility model is related to a kind of 440MHz bar antennas with DC earthing function.
Background technology
With developing rapidly for Internet of Things, on a lot of equipment, wireless radio frequency modules are assembled with, in order to realize between equipment
Intercommunication and remote monitoring.And 440MHz frequency ranges are relatively low due to frequency, wavelength is longer, and therefore there is stronger diffracting power, institute
To be widely used.As a lot of equipment is installed and used out of doors, it requires that there is lightning to protect for equipment and antenna
Protective function.And direct-current short circuit ground connection is to improve one of important method of device antenna lightning protection ability.
Existing 440MHz bar antennas are substantially based on design under use environment indoors, so not having direct current
Short circuit grounding function.And in its design, it is also difficult to realize DC earthing.In addition, the radio frequency of existing bar antenna
Can be usually device-dependent with what which was installed, i.e., antenna is to rely on ground, and the reliability of ground connection can have a strong impact on antenna
Radio-frequency performance.
Utility model content
The purpose of this utility model seeks to provide a kind of 440MHz bar antennas with DC earthing function.
The utility model is adopted the following technical scheme that：
A kind of 440MHz bar antennas with DC earthing function, including shell, radio frequency connector, coaxial line, PCB
Plate, spring antenna, copper pipe and inductance.
Wherein described shell acts primarily as the effect of protection inner antenna part, and the radio frequency connector is penetrating for the antenna
Frequency interface, for the connection between the antenna and receiving device, one end of the coaxial line is connected with the radio frequency connector,
And its other end is welded together with the microstrip line on the pcb board；The other end of the microstrip line on the pcb board and the bullet
Spring antenna welds together；Microstrip line on the pcb board is by the inductance and ground, the braiding layer of the namely coaxial line
Connection, the inductance can ensure that the direct-current short circuit ground connection of the antenna, while acting on radio frequency choke；The copper pipe is enclosed within
On the shell of the radio frequency connector, with the radio frequency connector directly contact；The effect of the copper pipe is to increase the frequency of antenna
The dependence over the ground of bandwidth and the reduction antenna.
Preferably, pcb board is the polyfluortetraethylene plate that thickness is 0.8 millimeter.
The beneficial effects of the utility model are antenna DC earthings, with lightning protection function, and radio-frequency performance and its
The equipment that is installed is unrelated.
Description of the drawings：
Accompanying drawing 1 is outline drawing of the present utility model；
Accompanying drawing 2 is the second layer structure chart after the utility model removes shell；
Accompanying drawing 3 is the endothecium structure figure after the utility model removes copper pipe；
In figure, 1 is shell, and 2 is radio frequency connector, and 3 is spring antenna, and 4 is copper pipe, and 5 is inductance, and 6 is pcb board, and 7 is same
Axis；
Specific embodiment
With reference to the accompanying drawings and detailed description the utility model is described further：
1 is antenna casing, and 2 is radio frequency connector, and antenna is connected with receiving device by radio frequency connector 2；3 is spring day
Line, 4 is copper pipe, and 5 is inductance, and 6 is pcb board, and 7 is coaxial line；On one end of spring antenna 3 and pcb board 6, one end of microstrip line is just
Nearly connection, on pcb board 6, the other end of microstrip line is connected with coaxial line 7；One end of inductance 5 is connected with the microstrip line above pcb board 6
Connect, the other end of inductance 5 is connected with the braiding layer of coaxial line 7, namely be connected with the earth；Copper pipe 4 is enclosed within the outer of radio frequency connector 2
On shell, with 2 directly contact of radio frequency connector；The effect of copper pipe 4 be to increase antenna frequency bandwidth and reduce antenna over the ground according to
Rely.
Preferred scheme is that pcb board adopts thickness for 0.8 millimeter of polyfluortetraethylene plate.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all in essence of the invention
Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.
Claims (2)
1. a kind of 440MHz bar antennas with DC earthing function, is characterized in that including shell, radio frequency connector, coaxial
Line, pcb board, spring antenna, copper pipe and inductance；
Wherein described radio frequency connector is the radio frequency interface of the antenna, is connected with receiving device, one end of the coaxial line with
The radio frequency connector connection, and its other end is welded together with the microstrip line on the pcb board；Micro- on the pcb board
The other end with line is welded together with the spring antenna；Microstrip line on the pcb board by the inductance with ground, also
It is the braiding layer connection of the coaxial line, to ensure that the direct-current short circuit of the antenna is grounded, while acting on radio frequency choke；Institute
State copper pipe to be enclosed within the shell of the radio frequency connector, with the radio frequency connector directly contact.
2. a kind of 440MHz bar antennas with DC earthing function according to claim 1, is characterized in that pcb board is adopted
With the polyfluortetraethylene plate that thickness is 0.8 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621047073.7U CN206022620U (en) | 2016-08-30 | 2016-08-30 | A kind of 440MHz bar antennas with DC earthing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621047073.7U CN206022620U (en) | 2016-08-30 | 2016-08-30 | A kind of 440MHz bar antennas with DC earthing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206022620U true CN206022620U (en) | 2017-03-15 |
Family
ID=58259503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621047073.7U Expired - Fee Related CN206022620U (en) | 2016-08-30 | 2016-08-30 | A kind of 440MHz bar antennas with DC earthing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206022620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248617A (en) * | 2017-07-20 | 2017-10-13 | 广东曼克维通信科技有限公司 | Micro-strip paster antenna |
-
2016
- 2016-08-30 CN CN201621047073.7U patent/CN206022620U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248617A (en) * | 2017-07-20 | 2017-10-13 | 广东曼克维通信科技有限公司 | Micro-strip paster antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee after: Changzhou ketewa Electronics Co.,Ltd. Address before: 213000 No.91, Hanjiang West Road, Xinbei District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU CTW ELECTRONICS Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 |