CN205621864U - Easily fixable's yagi aerial - Google Patents
Easily fixable's yagi aerial Download PDFInfo
- Publication number
- CN205621864U CN205621864U CN201620229810.9U CN201620229810U CN205621864U CN 205621864 U CN205621864 U CN 205621864U CN 201620229810 U CN201620229810 U CN 201620229810U CN 205621864 U CN205621864 U CN 205621864U
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- China
- Prior art keywords
- noose
- metal
- yagi aerial
- main element
- connection
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Abstract
The utility model relates to an easily fixable's yagi aerial, including the metal crossbeam to and metal pole setting, connection piece and the noose of the connection of metal crossbeam, the metal crossbeam is connected perpendicularly in the metal pole setting, and metal pole setting one side is equipped with connection piece and noose, is equipped with a plurality of through -hole on the connection piece, and the ware is tightly overlapped in the noose connection, and noose passes the connection piece connection through the through -hole and tightly overlaps the ware, and the connection piece setting is equipped with reflector, main element and a plurality of director in metal crossbeam and metal pole setting junction in proper order on the metal crossbeam, be equipped with the feed terminal on the main element, the utility model discloses simple structure, reasonable in design, the yagi aerial directionality is great high with the gain, comes direction -finding, remote communication effect good very much with it, and to fixed yagi aerial's device, the instrument can be simplified, fixes in the metal pole setting the metal crossbeam that extends easily, can increase life greatly, convenient to use, installation effectiveness have improved greatly, can save the solder and the energy.
Description
Technical field
This utility model relates to a kind of yagi aerial, particularly to a kind of yagi aerial being fixed easily, belongs to antenna technical field.
Background technology
Yagi aerial is the end-fire antenna arranged in parallel by an active dipole (typically by folded dipole), a passive reflector and several passive directors.In twentieth century twenties, the Yagi spark gap show of northeastern Japan university time and space field too two Crinis Carbonisatus understand this antenna, be referred to as " Uda antenna ", be called for short " yagi aerial ".Antenna system is requisite in communication system composition.In existing radio communication, single antenna is respectively used to emission source and receiving terminal.In physics, antenna is to provide the electric device of electric energy and the mutual phase transformation of radio frequency electromagnetic, is commonly used in transmitting set or receiver.When launching, transmitting set sends the radio-frequency current of a vibration and is converted into electromagenetic wave radiation goes out to antenna, antenna；When receiving, the energy of the antenna a part of electromagnetic wave of intercepting and capturing is to produce a small voltage, and is transported to this voltage in receiver amplify.
It is known that the radiated radio frequency (RF) energy in antenna system has its unique polarization characteristic, this geometry depending on antenna and directivity.Generally, polarization mode can be linear polarization or elliptic polarization.More specifically, linear polarization comprises again vertical polarization and horizontal polarization, and elliptic polarization comprises General Elliptic polarization and special circular polarisation.In any case, most basic polarization mode is vertically and horizontally to polarize.Every other polarization mode is all to be formed by above two simple polarization mode linear combination.For any transmitting or the radio frequency transmission of the pattern of reception, if launching antenna and receiving polarization mismatch, radio-frequency (RF) energy will be lost, and communication quality will be deteriorated.Therefore providing a kind of dual polarized antenna with good directivity the most necessary, yagi aerial is a kind of good antenna of directivity, but because its volume is bigger, great inconvenience is brought to installation, therefore, it is necessary to improve, yagi aerial is installed, designs and a kind of be easily installed fixing yagi aerial.
Utility model content
The technical problems to be solved in the utility model is the defect overcoming prior art, it is provided that a kind of yagi aerial being fixed easily.
In order to solve above-mentioned technical problem, this utility model provides following technical scheme:
A kind of yagi aerial being fixed easily of this utility model, including metal beam, and the metal stud that described metal beam connects, connect sheet and noose, described metal stud vertically connects described metal beam, described metal stud side is provided with connection sheet and noose, described connection sheet is provided with several through holes, device is tightly overlapped in the connection of described noose, described noose tightly overlaps device by described through hole through the connection of described connection sheet, described connection sheet is arranged on described metal beam and described metal stud junction, it is sequentially provided with reflector in described metal beam, main element and several directors, described main element is provided with current feed terminal.
As a kind of optimal technical scheme of the present utility model, described reflector, described main element and several described directors length in described metal beam all taper off state.
As a kind of optimal technical scheme of the present utility model, described main element and described current feed terminal junction are equipped with insulant.
As a kind of optimal technical scheme of the present utility model, the through hole on described noose, described tight set device and described connection sheet is one to one, is no less than 2.
This utility model is reached to provide the benefit that: a kind of yagi aerial being fixed easily of this utility model, and simple in construction is reasonable in design, yagi aerial has many good qualities, it has good directivity, relatively dipole antenna to have high gain, comes direction finding, telecommunication effect with it especially good.And for the device of fixing yagi aerial, instrument can simplify, being easily fixed the metal beam extended on metal stud, can significantly increase service life, easy to use, installation effectiveness substantially increases, furthermore it is possible to save solder and the energy.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.In the accompanying drawings:
Fig. 1 is a kind of yagi aerial structural representation being fixed easily of this utility model；
In figure: 1, metal beam；2, metal stud；3, sheet is connected；4, through hole；5, noose；6, device is tightly overlapped；7, reflector；8, main element；9, current feed terminal；10, director.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
Embodiment
As shown in Figure 1, a kind of yagi aerial being fixed easily, including metal beam 1, and the metal stud 2 that described metal beam 1 connects, connect sheet 3 and noose 5, it is characterized in that, described metal stud 2 vertically connects described metal beam 1, described metal stud 2 side is provided with connection sheet 3 and noose 5, described connection sheet 3 is provided with several through holes 4, described noose 5 connects tight set device 6, described noose 5 connects tight set device 6 by described through hole 4 through described connection sheet 3, described connection sheet 3 is arranged on described metal beam 1 and described metal stud 2 junction, it is sequentially provided with reflector 7 in described metal beam 1, main element 8 and several directors 10, described main element 8 is provided with current feed terminal 9.
Further, described reflector 7, described main element 8 and several described directors 10 length in described metal beam 1 all taper off state, described main element 8 and described current feed terminal 9 junction are equipped with insulant, described through hole 4 on described noose 5, described tight set device 6 and described connection sheet 3 is one to one, is no less than 2.
Concrete, typical yagi aerial should have three pairs of oscillators, and total is in " king " font.The title being connected with feeder line has a main element, occupy three to oscillator among, the centre one of " king " word is horizontal.The title reflector more a little longer than active dipole, it is in the side of active dipole, plays a part weaken the electric wave transmitted from this direction or launch the electric wave gone from this antenna；The title director shorter than active dipole, it is positioned at the opposite side of active dipole, and it can strengthen from this side to electric wave that is that transmit or that launch to this direction.Director can have many, and every root length degree will adjacent and near active dipole Na Genlve be shorter than it.Director is the most, and direction is the most sharp-pointed, gain is the highest, but after actually exceeding four, five directors, this " benefit " increases the most obvious, and volume is big, deadweight increases, the strength of materials requiring, the problems such as raising, added cost gradually highlight.Have once secondary five unit Yagi spark gaps enough under normal circumstances.Director to induced signal in " capacitive ", electric current leading voltage 90 °；The electromagnetic wave of director sensing can radiate to main element, radiation signal makes it lag behind from the aerial signal 90 ° directly arriving main element through quarter-wave distance, just counteracts " in advance " above caused, and both phase places are identical, then signal superposition, is strengthened.Reflector is slightly longer than 1/2nd wavelength, in perception, after current hysteresis 90 °, adds during being radiated main element the most delayed 90 °, has just differed 180 ° with the signal being applied directly on main element from reflector direction, served negative function.One direction is strengthened, and a direction weakens, and there has been highly directive.Emission state mechanism is as the same.
A kind of yagi aerial being fixed easily of this utility model, simple in construction, reasonable in design, yagi aerial has many good qualities, and it has good directivity, relatively dipole antenna to have high gain, comes direction finding, telecommunication effect with it especially good.And for the device of fixing yagi aerial, instrument can simplify, being easily fixed the metal beam extended on metal stud, can significantly increase service life, easy to use, installation effectiveness substantially increases, furthermore it is possible to save solder and the energy.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this utility model, although this utility model being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (4)
- null1. the yagi aerial being fixed easily，Including metal beam (1)，And the metal stud (2) that described metal beam (1) connects、Connect sheet (3) and noose (5)，It is characterized in that，Described metal stud (2) vertically connects described metal beam (1)，Described metal stud (2) side is provided with connection sheet (3) and noose (5)，Described connection sheet (3) is provided with several through holes (4)，Device (6) is tightly overlapped in described noose (5) connection，Described noose (5) tightly overlaps device (6) by described through hole (4) through the connection of described connection sheet (3)，Described connection sheet (3) is arranged on described metal beam (1) and described metal stud (2) junction，Reflector (7) it is sequentially provided with in described metal beam (1)、Main element (8) and several directors (10)，Described main element (8) is provided with current feed terminal (9).
- A kind of yagi aerial being fixed easily the most according to claim 1, it is characterised in that described reflector (7), described main element (8) and several described directors (10) all taper off state in the upper length of described metal beam (1).
- A kind of yagi aerial being fixed easily the most according to claim 1, it is characterised in that described main element (8) and described current feed terminal (9) junction are equipped with insulant.
- A kind of yagi aerial being fixed easily the most according to claim 1, it is characterised in that the described through hole (4) on described noose (5), described tight set device (6) and described connection sheet (3) is one to one, is no less than 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229810.9U CN205621864U (en) | 2016-03-24 | 2016-03-24 | Easily fixable's yagi aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620229810.9U CN205621864U (en) | 2016-03-24 | 2016-03-24 | Easily fixable's yagi aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205621864U true CN205621864U (en) | 2016-10-05 |
Family
ID=57031240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620229810.9U Expired - Fee Related CN205621864U (en) | 2016-03-24 | 2016-03-24 | Easily fixable's yagi aerial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205621864U (en) |
-
2016
- 2016-03-24 CN CN201620229810.9U patent/CN205621864U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20161005 Termination date: 20170324 |