CN207338649U - A kind of VHF aerial - Google Patents
A kind of VHF aerial Download PDFInfo
- Publication number
- CN207338649U CN207338649U CN201721270092.0U CN201721270092U CN207338649U CN 207338649 U CN207338649 U CN 207338649U CN 201721270092 U CN201721270092 U CN 201721270092U CN 207338649 U CN207338649 U CN 207338649U
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- China
- Prior art keywords
- antenna
- short
- long
- telescopic rod
- connection
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Abstract
The utility model discloses a kind of VHF aerial, including short antenna, the quantity of the short antenna is odd number, it is connected in turn on short telescopic rod, centrally located short antenna is connected with being connected antenna one end spring, and the connection antenna other end passes through spring block, it is connected with long telescopic rod, the connection antenna is midpoint, and long telescopic rod both sides are sequentially connected long antenna, the long antenna amount fewer than short antenna quantity 1；All short antenna and long antenna connected on the long telescopic rod and short telescopic rod, are connected by spring block.The short antenna quantity is 5, and the long antenna amount is 4.The connection antenna sets limited block, and the limited block is located above long antenna peak, below short antenna minimum point.The spacing block length is less than so the overall width of short antenna.The short antenna is identical with vast of heaven line width dimensions.
Description
Technical field
It the utility model is related to a kind of antenna, and in particular to a kind of VHF aerial.
Background technology
The development of radiotechnics, it is closely related with the development of antenna technology.Reception antenna design now is general to use
Active and passive two methods.The design of passive antenna, the maximum power and the ratio of power density that generally use receives determine
The effective aperture of antenna, i.e.,：A=Pmax/S.In formula, A is antenna effective aperture；Pmax is the maximum power received；S is power
Density.The design of active antenna, is declined with the gain of active electric network to compensate gain of the passive antenna caused by size diminishes,
So as to achieve the purpose that to improve antenna radiation efficiency.The design principle of passive antenna, the antenna designed will reach omnidirectional and connect
Receive, antenna volume can be very huge, and the antenna designed using active antenna design principle, uses single polarization mode antenna more, can not
Detect and receive high elevation angle sky wave, detect receipts scope and be extremely limited.
Utility model content
Technical problem to be solved in the utility model is the design principle of passive antenna, and the antenna designed will reach
Omnidirectional receives, and antenna volume can be very huge, and the antenna designed using active antenna design principle, uses single polarization mode day more
Line, can not detect and receive high elevation angle sky wave, detect receipts scope and be extremely limited, and it is an object of the present invention to provide a kind of VHF aerial, solves
The design principle of passive antenna, the antenna designed will reach omnidirectional's reception, and antenna volume can be very huge, using active antenna
The antenna of design principle design, uses single polarization mode antenna more, can not detect and receive high elevation angle sky wave, detects receipts scope and is subject to greatly
The problem of limitation.
The utility model is achieved through the following technical solutions：
A kind of VHF aerial, including short antenna, the quantity of the short antenna is odd number, is connected to short telescopic rod in turn
On, centrally located short antenna is connected with being connected antenna one end spring, the connection antenna other end by spring block, with
Long telescopic rod connection, the connection antenna is midpoint, and long telescopic rod both sides are sequentially connected long antenna, and the long antenna amount is than short
Antenna amount few 1；All short antenna and long antenna connected on the long telescopic rod and short telescopic rod, are connected by spring block
Connect.The design principle of passive antenna, the antenna designed will reach omnidirectional's reception, and antenna volume can be very huge, and use is active
The antenna of antenna design principles design, uses single polarization mode antenna more, can not detect and receive high elevation angle sky wave, detects receipts scope and is subject to pole
Big limitation, the design use active dipole antenna type, and traditional wire dipole antenna bandwidth of operation is narrow, the utility model
Using the active and passive matching way to combination, the bandwidth of antenna has been widened significantly；Antenna amplifier antennafire is set using active circuit
Meter, the circuit requirement low noise, high input impedance, Larger Dynamic, the linearity are good.The first order and the matching of second level circuit impedance：Adopt
With passive impedance transformation and active impedance matching way, antenna output impedance is adjusted to close to 50 Ω in working frequency range.The
Secondary circuit reduces even-order harmonic using push pull mode, improves dynamic range.This contraction structure has wire antenna and frame antenna concurrently
Design advantage, the wideband operation characteristic of dipole antenna is realized using load mode；Using low noise field-effect tube and recommend
Working method, improves antenna dynamic range, reduces antenna noise；Matching optimization is carried out with system Direction Finding Algorithm, determines antenna array
Optimum aperture size；In order to adapt to portable and vehicle-mounted use, antenna array structure is designed using folding storage.Receipts day can be detectd
Ripple, ground involve high elevation angle sky wave etc., and greatly improve antenna detects receipts scope.
The short antenna quantity is 5, and the long antenna amount is 4.Further, the preferred solution as the utility model.
The connection antenna sets limited block, and the limited block is located above long antenna peak, is minimum positioned at short antenna
Point lower section.Further, the preferred solution as the utility model.
The spacing block length is less than so the overall width of short antenna.Further, the preferred solution as the utility model.
The short antenna is identical with vast of heaven line width dimensions, further, the preferred solution as the utility model.
The utility model compared with prior art, has the following advantages and advantages：
1st, a kind of VHF aerial contraction structure of the utility model has the design advantage of wire antenna and frame antenna concurrently, using adding
Load mode realizes the wideband operation characteristic of dipole antenna；Using low noise field-effect tube and symmetrical operation mode, antenna is improved
Dynamic range, reduces antenna noise,；
2nd, a kind of VHF aerial of the utility model and system Direction Finding Algorithm carry out matching optimization, determine the optimal of antenna array
Aperture size；In order to adapt to portable and vehicle-mounted use,；
3rd, a kind of VHF aerial of the utility model, can detect receipts sky wave, and ground involves high elevation angle sky wave etc., greatly improves
Antenna detects receipts scope.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, does not form the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model antenna deployed configuration schematic diagram；
Fig. 2 collapses structure diagram for the utility model antenna.
Mark and corresponding parts title in attached drawing：
1- short antenna, 2- spring blocks, the short telescopic rods of 3-, 4- connection antennas, 5- limited blocks, 6- long antennas, 7- long telescopic rods.
Embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model, is not intended to limit the scope of the present invention.
Embodiment 1
As shown in Figs. 1-2, a kind of VHF aerial of the utility model, including short antenna 1, the quantity of the short antenna 1 are
Odd number, is connected in turn on short telescopic rod 3, and centrally located short antenna 1 is connected with being connected 4 one end spring of antenna, described
4 other end of antenna is connected by spring block 2, is connected with long telescopic rod 7, the connection antenna 4 is midpoint, long 7 both sides of telescopic rod
Long antenna 6 is sequentially connected, long 6 quantity of antenna is than 1 quantity of short antenna few 1；Connect on the long telescopic rod 7 and short telescopic rod 3
All short antenna 1 and long antenna 7 connect, are connected by spring block.
During work：Receipts sky wave can be detectd, ground involves high elevation angle sky wave etc., greatly improves detecing for antenna and receives scope
Embodiment 2
As shown in Figs. 1-2, a kind of VHF aerial of the utility model, including short antenna 1, the quantity of the short antenna 1 are
Odd number, is connected in turn on short telescopic rod 3, and centrally located short antenna 1 is connected with being connected 4 one end spring of antenna, described
4 other end of antenna is connected by spring block 2, is connected with long telescopic rod 7, the connection antenna 4 is midpoint, long 7 both sides of telescopic rod
Long antenna 6 is sequentially connected, long 6 quantity of antenna is than 1 quantity of short antenna few 1；Connect on the long telescopic rod 7 and short telescopic rod 3
All short antenna 1 and long antenna 7 connect, are connected by spring block.1 quantity of short antenna is 5, long 6 quantity of antenna
For 4.The connection antenna 4 sets limited block 5, and the limited block 5 is located above long 6 peak of antenna, is minimum positioned at short antenna 1
Point lower section.5 length of limited block is less than so the overall width of short antenna 1.6 width dimensions phase of the short antenna 1 and long antenna
Together；
During work：Antenna array structure is designed using folding storage, and 5 length of limited block is less than so the beam overall of short antenna 1
Degree, storage are more convenient.
Above-described embodiment, the purpose of this utility model, technical solution and beneficial effect have been carried out into
One step describes in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, where within the spirit and principles of the present invention, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of this utility model.
Claims (5)
- A kind of 1. VHF aerial, it is characterised in that：Including short antenna (1), the quantity of the short antenna (1) is odd number, successively It is connected on short telescopic rod (3), centrally located short antenna (1) is connected with being connected antenna (4) one end spring, the connection Antenna (4) other end is connected with long telescopic rod (7) by spring block (2), and the connection antenna (4) is midpoint, long telescopic rod (7) both sides are sequentially connected long antenna (6), and long antenna (6) quantity is than short antenna (1) quantity few 1；All short antenna (1) and long antenna (6) connected on the long telescopic rod (7) and short telescopic rod (3), pass through spring block Connection.
- A kind of 2. VHF aerial according to claim 1, it is characterised in that：Short antenna (1) quantity is 5, described Long antenna (6) quantity is 4.
- A kind of 3. VHF aerial according to claim 1, it is characterised in that：The connection antenna (4) sets limited block (5), the limited block (5) is located above long antenna (6) peak, below short antenna (1) minimum point.
- A kind of 4. VHF aerial according to claim 3, it is characterised in that：Limited block (5) length be less than so The overall width of short antenna (1).
- A kind of 5. VHF aerial according to claim 4, it is characterised in that：The short antenna (1) and long antenna (6) are wide It is identical to spend size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270092.0U CN207338649U (en) | 2017-09-29 | 2017-09-29 | A kind of VHF aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721270092.0U CN207338649U (en) | 2017-09-29 | 2017-09-29 | A kind of VHF aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207338649U true CN207338649U (en) | 2018-05-08 |
Family
ID=62366808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721270092.0U Active CN207338649U (en) | 2017-09-29 | 2017-09-29 | A kind of VHF aerial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207338649U (en) |
-
2017
- 2017-09-29 CN CN201721270092.0U patent/CN207338649U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: VHF antenna Effective date of registration: 20210802 Granted publication date: 20180508 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: CHENGDU MEISHU TECHNOLOGY Co.,Ltd. Registration number: Y2021980007176 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220422 Granted publication date: 20180508 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: CHENGDU MEISHU TECHNOLOGY CO.,LTD. Registration number: Y2021980007176 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A VHF antenna Effective date of registration: 20220630 Granted publication date: 20180508 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: CHENGDU MEISHU TECHNOLOGY CO.,LTD. Registration number: Y2022980009182 |