CN101123326A - Base station short wave bandwidth load coupling antenna - Google Patents
Base station short wave bandwidth load coupling antenna Download PDFInfo
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- CN101123326A CN101123326A CNA2007100533241A CN200710053324A CN101123326A CN 101123326 A CN101123326 A CN 101123326A CN A2007100533241 A CNA2007100533241 A CN A2007100533241A CN 200710053324 A CN200710053324 A CN 200710053324A CN 101123326 A CN101123326 A CN 101123326A
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- antenna
- base station
- short wave
- wave bandwidth
- station short
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Abstract
The invention relates to a base station shortwave broadband loading dipole antenna used for short-wave communication, which comprises a stand bar tower, an antenna arm, an antenna tail, an insulator and a transmission line transformer. The difference is that the middle of the antenna arm is connected with a lumped loading resistor in series; a triangle antenna tail extends down towards the stand bar tower at an angle of Alpha at the loading point of lumped loading resistor on the antenna arm; the end of the antenna tail is hung on the stand bar tower through insulation rope; the antenna arm is connected with the stand bar tower through the insulator. The invention has the advantages of 1) simple structure, being erected conveniently, small floor space, applicability for medium and minitype base stations within 2000km; 2) excellent standing wave ratio band width, and being corollary to wideband transmitters; average increment is more than 4dBi on general ground; 3) weak directionality, applicability for omnidirectional communication; 4) great wind resistance; 5) meeting the use requirement of the frequency band from 3 to 30 MHz.
Description
Technical field
The present invention relates to a kind of base station short wave bandwidth load coupling antenna that is applied to short wave communication.
Background technology
Be used at present, the antenna for base station of in-plant short wave communication adopts horizontally-polarized antenna in a large number, modal have dipole antenna, a cage antenna etc., they are narrow-band antenna, can not guarantee that transmitter exempts from tuning full frequency band wideband operation, frequency hopping, spread spectrum, adaptive frequency-selecting, dynamically frequently pipe etc. effectively the antijam communication means can't implement.The modern communications traffic carrying capacity is increasing, in order not increase the antenna scale, requires communication distance 2000km to should be omnidirectional wideband antenna with interior antenna, to satisfy the communication to a plurality of communication objects.
Summary of the invention
Problem to be solved by this invention is to propose the base station short wave bandwidth load coupling antenna of a kind of suitable 2000km with interior short wave communication at above-mentioned prior art.
The solution that the present invention adopts is: base station short wave bandwidth load coupling antenna, and include and support shaft tower, antenna arm, antenna empennage, insulator, line transformer, its difference is in lump loading resistor unit of serial connection, antenna arm middle part.
Press such scheme, described antenna arm stretches out a triangle antenna empennage with angle [alpha] to supporting shaft tower downwards from the load(ing) point of lump loading resistor unit, the end of antenna empennage hangs over by the insulation rope and supports on the shaft tower, and antenna arm is connected by insulator with the support shaft tower.
Press such scheme, the antenna arm before the load(ing) point of lump loading resistor unit is the wiregrating triangle of a planar structure, and the antenna arm behind the load(ing) point of lump loading resistor unit is a three-dimensional wiregrating pyramidal structure.
Press such scheme, the Stainless Steel silk rope that described antenna arm diameter of wire is 2-4mm.
Press such scheme, described angle [alpha] is 20-40 °.
Advantage of the present invention is:
1) simple in structure, to set up conveniently, floor space is little, is applicable to that 2000km is with interior middle-size and small-size base station;
2) have good standing-wave ratio bandwidth, than less than 2.2, be suitable for and the supporting use of wideband transmitter at whole short-wave band standing internal wave; Average gain is greater than 4dBi on general ground;
3) directivity a little less than, be suitable for directional communication;
4) antenna has very strong wind loading rating;
5) line transformer have than the general impedance converter wide the bandwidth of Duoing, can satisfy the instructions for use of 3～30MHz frequency range.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention;
Fig. 2 is the plan structure schematic diagram of Fig. 1;
Fig. 3 is emulation and actual measurement standing-wave ratio curve;
Fig. 4 is an antenna gain simulation calculation curve.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention is described further.
Base station short wave bandwidth load coupling antenna, include the support shaft tower, antenna arm 2, antenna empennage 6, insulator, line transformer 4 (Balun), lump loading resistor unit 5, supporting shaft tower 1 links to each other with line transformer by antenna arm, line transformer supports shaft tower 3 with another again and links to each other, lump loading resistor unit is positioned at the antenna arm middle part, antenna arm stretches out a triangle antenna empennage with angle [alpha] to supporting shaft tower downwards from the load(ing) point of lump loading resistor unit, the end of antenna empennage hangs over by the insulation rope and supports on the shaft tower, and antenna arm is connected by insulator with the support shaft tower.
Wherein, the antenna arm before the load(ing) point of lump loading resistor unit is the wiregrating triangle of a planar structure, and the antenna arm behind the load(ing) point of lump loading resistor unit is a three-dimensional wiregrating pyramidal structure.
Wherein, the antenna arm diameter of wire is the Stainless Steel silk rope of 2-4mm.
Wherein, angle [alpha] is 20-40 °.
Wherein, the entire antenna arm adopts Xiao Zhang angle triangular structure.
As shown in Figure 1, antenna brachium L=19.2m, wherein L
1=7.918m, L
2=9.264m, L
3=1.417m, the length S=0.4m of loaded segment and feed section, the terminal wide W=1.8m of antenna arm, the long L of antenna empennage
4=7.6m, antenna empennage subtended angle α=30 °, lump loading resistor unit R=160 Ω is high-power noninductive resistance, the no-load voltage ratio of line transformer is 6: 1.
The experiment antenna is adopted moment method emulation, VSWR curve chart, gain curve figure and the antenna pattern of base station short wave bandwidth load coupling antenna have been calculated, as Fig. 2 is the comparison diagram of moment method emulation VSWR curve and actual measurement VSWR curve, both coincide fine, and measured result measures with vector network analyzer HP8752C.As shown in Figure 2, the working band of this antenna covers the whole short-wave band of 3～30MHz, and the VSWR maximum is about 2.2.
As Fig. 3 be on the ground (σ=1 * 10
-2S/m, ε
r=15) the gain curve figure that adopts moment method emulation to obtain to the experiment antenna.As can be seen, the low frequency end gain is lower, and this is to cause that the calculated value of antenna efficiency has only 20% during as 3MHz because antenna efficiency is low at this moment.But when operating frequency during greater than 5MHz, the gain of antenna is greater than 2dBi; The average gain of full frequency band internal antenna is greater than 4dBi.
Claims (8)
1. base station short wave bandwidth load coupling antenna includes and supports shaft tower, antenna arm (2), antenna empennage (6), insulator, line transformer (4), it is characterized in that in a serial connection lump loading resistor unit (5), antenna arm middle part.
2. by the described base station short wave bandwidth load coupling antenna of claim 1, it is characterized in that described antenna arm stretches out a triangle antenna empennage with angle [alpha] to supporting shaft tower downwards from the load(ing) point of lump loading resistor unit, the end of antenna empennage hangs over by the insulation rope and supports on the shaft tower, and antenna arm is connected by insulator with the support shaft tower.
3. by claim 1 or 2 described base station short wave bandwidth load coupling antennas, it is characterized in that the antenna arm before the load(ing) point of lump loading resistor unit is the wiregrating triangle of a planar structure, the antenna arm behind the load(ing) point of lump loading resistor unit is a three-dimensional wiregrating pyramidal structure.
4. by claim 1 or 2 described base station short wave bandwidth load coupling antennas, it is characterized in that the Stainless Steel silk rope that described antenna arm diameter of wire is 2-4mm.
5. by the described base station short wave bandwidth load coupling antenna of claim 2, it is characterized in that described angle [alpha] is 20-40 °.
6. by claim 1 or 2 or 5 described base station short wave bandwidth load coupling antennas, it is characterized in that lump loading resistor unit is high-power noninductive resistance.
7. by claim 1 or 2 or 5 described base station short wave bandwidth load coupling antennas, the no-load voltage ratio that it is characterized in that line transformer is 6: 1.
8. by the described base station short wave bandwidth load coupling antenna of claim 5, it is characterized in that antenna brachium L=19.2m, wherein L
1=7.918m, L
2=9.264m, L
3=1.417m, the loaded segment of lump loading resistor unit and the length S=0.4m of feed section, the terminal wide W=1.8m of antenna arm, the long L of antenna empennage
4=7.6m, antenna empennage subtended angle α=30 °, lump loading resistor unit R=160 Ω, the no-load voltage ratio of line transformer are 6: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100533241A CN101123326A (en) | 2007-09-21 | 2007-09-21 | Base station short wave bandwidth load coupling antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100533241A CN101123326A (en) | 2007-09-21 | 2007-09-21 | Base station short wave bandwidth load coupling antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101123326A true CN101123326A (en) | 2008-02-13 |
Family
ID=39085551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100533241A Pending CN101123326A (en) | 2007-09-21 | 2007-09-21 | Base station short wave bandwidth load coupling antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101123326A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904420B (en) * | 2014-03-27 | 2017-01-25 | 西安电子科技大学 | Minimized and broadband efficient cage type antenna |
-
2007
- 2007-09-21 CN CNA2007100533241A patent/CN101123326A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103904420B (en) * | 2014-03-27 | 2017-01-25 | 西安电子科技大学 | Minimized and broadband efficient cage type antenna |
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Open date: 20080213 |