CN106299684A - A kind of method and apparatus improving antenna performance - Google Patents
A kind of method and apparatus improving antenna performance Download PDFInfo
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- CN106299684A CN106299684A CN201510338348.6A CN201510338348A CN106299684A CN 106299684 A CN106299684 A CN 106299684A CN 201510338348 A CN201510338348 A CN 201510338348A CN 106299684 A CN106299684 A CN 106299684A
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Abstract
The invention discloses a kind of method and apparatus improving antenna performance, described aerial radiation bottom of device installs floor, described floor is connected with the ground of aerial radiation device, described floor is provided with at least one and introduces oscillator, distance between mutual distance and the oscillator of radiation appliance of multiple described introducing oscillators was arranged according to periodic arrangement or aperiodic, introduced floor in aerial radiation bottom of device, increased the size on antenna ground, increase the reflecting effect of ground level, antenna performance is had and to a certain degree improves；Increase and introduce oscillator, introducing oscillator produces impact to the electric current of the oscillator of aerial radiation device, by adjusting the length introducing oscillator and relative position, changes the CURRENT DISTRIBUTION of the oscillator of aerial radiation device, it is finally reached extension bandwidth of operation, improves the purpose of antenna performance.The working band of inventive antenna is significantly extended, and performance is improved.
Description
Technical field
The present invention relates to the antenna branch of Electromagnetic Field and Microwave Technology, a kind of method and apparatus improving antenna performance.
Background technology
The transmitting ultimate principle of antenna is: electricity is propagated with the speed close to light, in the conductor when the discontinuity point run in conductor
Time, it will be reflected back toward signal source.If electric current is alternation, and reflected current appropriate moment return initial point or
Distributing point, then electric current will be strengthened by the most each cycle, thus have only in the least energy just can maintain antenna
Standing wave.I.e. antenna is made to be in resonant condition due to the existence of standing wave, thus to spatial emission electric wave.
In ham radio, quarter-wave antenna should the simplest and a kind of antenna that effect is the poorest,
So it occupies considerable ratio in radio circle.Giving an example, the antenna major part on police car is quarter-wave
Antenna, most mobile phone is the most all quarter-wave antenna.
1/4 wave vertical earth mat antenna is one common in vertical antenna.This antenna structure is simple, makes easily, both
Can as fixed station antenna installation on roof it can also be used to field movable communication.It is the vertical polarization omnirange of a practicality
Property antenna.
1/4 wavelength planar ground antenna is the vertical radiation oscillator by a length of 1/4 wavelength and the earth mat of 3-4 root level
Radiating bars composition (shortens effect in view of wavelength, antenna oscillator length generally takes 1/4 wavelength × 0.95), as it is shown in figure 1,
One the artificial ground of earth mat radiating bars composition that 4 a length of 1/4 wavelength horizontal symmetry are placed.Vertical radiation oscillator is with coaxial
The heart yearn of cable is connected, and earth mat is connected on the screen layer of coaxial cable.The vertical antenna of the artificial conductive floor of this band is just called
Vertical earth mat antenna.There is earth mat aft antenna to may exit off ground frame as far as possible high, and the primary radiation elevation angle can also be made to reduce, increase
Big communication distance.The impedance of quarter-wave vertical earth mat antenna is relevant with the inclined degree of earth mat.If earth mat is perfectly level,
Then the impedance of antenna feed point is about 36 ohm, if downward-sloping about 45 ° of earth mat, the impedance of antenna feed point then can
Increase to 50 ohm.This is identical with 50 Europe superscript quasi-Characteristic Impedance of Coaxial Cables numerical value, after at this moment feeder line and antenna are joined directly together
Can reach preferable impedance matching condition.But the performance parameter of antenna is not met by relatively high target requirement.
Summary of the invention
It is an object of the invention to provide a kind of method and apparatus improving antenna performance, to solve above-mentioned background technology proposes
Problem.
For achieving the above object, the present invention provides following technical scheme:
A kind of method improving antenna performance, introduces floor in aerial radiation bottom of device, increases the size on antenna ground, increases
The reflecting effect of ground level, has antenna performance and to a certain degree improves；Increase and introduce oscillator, introduce oscillator and aerial radiation is filled
The electric current of the oscillator put produces impact, by adjusting the length introducing oscillator and relative position, changes shaking of aerial radiation device
The CURRENT DISTRIBUTION of son, is finally reached extension bandwidth of operation, improves the purpose of antenna performance.
A kind of device improving antenna performance, including aerial radiation device, described aerial radiation bottom of device installs floor, institute
Stating floor to be connected with the ground of aerial radiation device, described floor is provided with at least one and introduces oscillator, multiple described introducing oscillators
Mutual distance and the oscillator of radiation appliance between distance arrange according to periodic arrangement or aperiodic.
As the further scheme of the present invention: the length of multiple described introducing oscillators is equal or different.
Compared with prior art, the invention has the beneficial effects as follows: the working band of antenna is significantly extended, and performance is changed
Kind.
Accompanying drawing explanation
Fig. 1 is 1/4 wave vertical earth mat antenna of prior art.
Fig. 2 is the 1/4 wavelength earth mat antenna that the earth mat of prior art is downward-sloping.
Fig. 3 is the knot that the 1/4 wavelength earth mat antenna that in the method and apparatus improving antenna performance, earth mat is downward-sloping increases floor
Structure schematic diagram.
Fig. 4 is the structural representation of embodiment one in the method and apparatus improving antenna performance.
Fig. 5 is the structural representation of embodiment one in the method and apparatus improving antenna performance.
Fig. 6 is the structural representation of embodiment one in the method and apparatus improving antenna performance.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly and completely
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Refer to Fig. 1～6, in the embodiment of the present invention, a kind of method improving antenna performance, pacify in aerial radiation bottom of device
Installed floor 2, described floor 2 is connected with the ground of radiation appliance, increases the size on antenna ground；On described floor 2, there is installation
Hole with carrying increase introducing oscillator 3, the distance between mutual distance and the oscillator 1 of radiation appliance of described installing hole according to
Certain method is arranged, can be with periodic arrangement, it is also possible to aperiodic arranges；The introducing oscillator 3 of at least one, when having
During multiple introducing oscillator 3, its length can be inconsistent；Introduce floor 2, increase the size on antenna ground, increase ground level
Reflecting effect, has antenna performance and to a certain degree improves；Increase after introducing oscillator 3, introduce oscillator 3 to aerial radiation device
The electric current of oscillator 1 produce impact, by adjusting the length introducing oscillator 3 and relative position, change aerial radiation device
The CURRENT DISTRIBUTION of oscillator 1, is finally reached extension bandwidth of operation, improves the purpose of antenna performance.
Embodiment one
Refer to Fig. 4, in the embodiment of the present invention, a kind of device improving antenna performance, including aerial radiation device, described
Aerial radiation bottom of device installs floor 2, and described floor 2 is connected with the ground of aerial radiation device, increases the size on antenna ground；
Described floor 2 is provided with two installing holes, and two described installing holes are distributed on the two ends of the oscillator 1 of radiation appliance, Mei Gean
Being respectively provided with one on dress hole and introduce oscillator 3, the length of two described introducing oscillators 3 is equal.
Embodiment two
Refer to Fig. 5, in the embodiment of the present invention, a kind of device improving antenna performance, including aerial radiation device, described
Aerial radiation bottom of device installs floor 2, and described floor 2 is connected with the ground of aerial radiation device, increases the size on antenna ground；
Described floor 2 is provided with three installing holes, between mutual distance and the oscillator 1 of radiation appliance of three described installing holes away from
From according to periodic arrangement, each installing hole is respectively provided with one and introduces oscillator 3, the length of three described introducing oscillators 3.
Embodiment three
Refer to Fig. 6, in the embodiment of the present invention, a kind of device improving antenna performance, including aerial radiation device, described
Aerial radiation bottom of device installs floor 2, and described floor 2 is connected with the ground of aerial radiation device, increases the size on antenna ground；
Described floor 2 is provided with four installing holes, between mutual distance and the oscillator 1 of radiation appliance of four described installing holes away from
From according to arranging aperiodic, each installing hole being respectively provided with one and introduces oscillator 3, the length of four described introducing oscillators 3 is not
Deng.
Illustrate as a example by 1/4 wavelength antennas of mid frequency 150MHz,
When frequency is 150MHz, the wavelength=light velocity/frequency=2m, quarter-wave is exactly 0.5m, it is contemplated that wavelength shortens
Effect, a length of 0.5m*0.95=0.475m of oscillator 11 of aerial radiation device, radius is 4mm, and earth mat is downward-sloping
Earth mat pole length is also 0.475m, and radius is also 4mm.
Now at plate 2 circularly that bottom one radius of installation is 150mm of the oscillator 1 of aerial radiation device, described plate circularly
2 be concentric circular with the oscillator 1 of aerial radiation device, installs four introducing oscillators 3 in plate 2 outermost circularly, described in draw
The height entering oscillator 3 is all 270mm, and radius is 4mm, four described introducing oscillator 21 spacing 90 ° successively.
This modified model antenna measurement is measured through reality as described in Table 1, and the band width of standing-wave ratio≤1.5 reaches about 40MHz,
Relative bandwidth (absolute bandwidth/mid frequency) reaches 27%, the 1/4 wavelength earth mat antenna that earth mat is downward-sloping under normal circumstances
The relative bandwidth of standing-wave ratio≤1.5 is 5%-10%, and actual comparison finds that the working band of antenna is significantly extended, and performance obtains
To improving.
Table 1 embodiment three relative bandwidth increase table compared with common 1/4 wavelength inclination earth mat antenna
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of the spirit or essential attributes of the present invention, it is possible to realize the present invention in other specific forms.Therefore, no matter from
From the point of view of which point, all should regard embodiment as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all by fall in the implication of equivalency and scope of claim
Change is included in the present invention.Should not be considered as limiting involved claim by any reference in claim.
Although moreover, it will be appreciated that this specification is been described by according to embodiment, but the most each embodiment only comprises
One independent technical scheme, this narrating mode of description is only the most for clarity sake, and those skilled in the art should be by
Description is as an entirety, and the technical scheme in each embodiment can also be through appropriately combined, and forming those skilled in the art can
With other embodiments understood.
Claims (3)
1. the method improving antenna performance, it is characterised in that introduce floor (2) in aerial radiation bottom of device, increases
Add the size on antenna ground, increase the reflecting effect of ground level, antenna performance is had and to a certain degree improves；Increase and introduce oscillator (3),
Introduce oscillator (3) and the electric current of the oscillator (1) of aerial radiation device is produced impact, introduce oscillator (3) by adjusting
Length and relatively position, change the CURRENT DISTRIBUTION of the oscillator (1) of aerial radiation device, be finally reached extension bandwidth of operation,
Improve the purpose of antenna performance.
2. improve a device for antenna performance, including aerial radiation device, it is characterised in that described aerial radiation device
Bottom install floor (2), described floor (2) are connected with the ground of aerial radiation device, described floor (2) be provided with to
Few one introduces oscillator (3), between mutual distance and the oscillator (1) of radiation appliance of multiple described introducing oscillators (3)
Distance arrange according to periodic arrangement or aperiodic.
The device improving antenna performance the most according to claim 2, it is characterised in that multiple described introducing oscillators (3)
Length equal or different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338348.6A CN106299684A (en) | 2015-06-12 | 2015-06-12 | A kind of method and apparatus improving antenna performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338348.6A CN106299684A (en) | 2015-06-12 | 2015-06-12 | A kind of method and apparatus improving antenna performance |
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| Publication Number | Publication Date |
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| CN106299684A true CN106299684A (en) | 2017-01-04 |
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| CN201510338348.6A Pending CN106299684A (en) | 2015-06-12 | 2015-06-12 | A kind of method and apparatus improving antenna performance |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918803B1 (en) * | 2007-07-11 | 2009-10-02 | Advanten Soc Par Actions Simpl | ANTENNAIRE SYSTEM COMPRISING A REPLIE MONOPOLE WITH MULTIBRINS PARASITES. |
| KR20100020875A (en) * | 2008-08-13 | 2010-02-23 | (주)에이스안테나 | Cylinder type monopole multi-band antenna using non-feeding element |
| CN202616399U (en) * | 2012-06-05 | 2012-12-19 | 中国电子科技集团公司第三十八研究所 | Meter-wave broadband dual-polarization cone-cage antenna unit |
| JP2014192652A (en) * | 2013-03-27 | 2014-10-06 | Murata Mfg Co Ltd | Array antenna |
| US8878728B1 (en) * | 2012-01-16 | 2014-11-04 | Rockwell Collins, Inc. | Parasitic antenna array for microwave frequencies |
-
2015
- 2015-06-12 CN CN201510338348.6A patent/CN106299684A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918803B1 (en) * | 2007-07-11 | 2009-10-02 | Advanten Soc Par Actions Simpl | ANTENNAIRE SYSTEM COMPRISING A REPLIE MONOPOLE WITH MULTIBRINS PARASITES. |
| KR20100020875A (en) * | 2008-08-13 | 2010-02-23 | (주)에이스안테나 | Cylinder type monopole multi-band antenna using non-feeding element |
| US8878728B1 (en) * | 2012-01-16 | 2014-11-04 | Rockwell Collins, Inc. | Parasitic antenna array for microwave frequencies |
| CN202616399U (en) * | 2012-06-05 | 2012-12-19 | 中国电子科技集团公司第三十八研究所 | Meter-wave broadband dual-polarization cone-cage antenna unit |
| JP2014192652A (en) * | 2013-03-27 | 2014-10-06 | Murata Mfg Co Ltd | Array antenna |
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Application publication date: 20170104 |