CN103825081A - Broadband wide wave beam circular polarized antenna and circular polarization method - Google Patents
Broadband wide wave beam circular polarized antenna and circular polarization method Download PDFInfo
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- CN103825081A CN103825081A CN201210459398.6A CN201210459398A CN103825081A CN 103825081 A CN103825081 A CN 103825081A CN 201210459398 A CN201210459398 A CN 201210459398A CN 103825081 A CN103825081 A CN 103825081A
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Abstract
The invention relates to the field of an antenna, and especially relates to a broadband wide wave beam circular polarized antenna and a circular polarization method in the field of a satellite communication and navigation antenna. The technical scheme adopted by the invention is as follows: the structure comprises an antenna layer and a microstrip power divider layer disposed below the antenna layer. The antenna layer comprises four integrally manufactured bent gradual change arrays; the four bent gradual change arrays are each connected with a feed metal column; the feed metal columns and a microstrip power divider on the microstrip power divider layer are connected in a circuit; the microstrip power divider layer is a one-to-four microstrip power divider; the four integrally manufactured bent gradual change arrays are totally the same in terms of shape; and the respectively connected feed metal columns are distributed to be vertical to a horizontal plane and are disposed at the central portion of the whole antenna. By using the technical scheme provided by the invention, the novel antenna has the advantages of wide working frequency band, large wave lobe width, good circular polarization performance, not high processing precision requirements, convenient installation and the like, thereby being quite suitable for high-performance satellite navigation ground receiving equipment.
Description
Technical field
The present invention relates to field of antenna, relate in particular to the broadband wide beam circular polarized antenna of satellite communication, navigation antenna and the method for circular polarization.
Background technology
Current circular polarized antenna mainly contains the structures such as microband paste, helical antenna, crossed dipole.
Micro-strip paster antenna beamwidth is wide, low elevation angle performance is good, but be subject to medium sheet material thickness limits, limited bandwidth, conventionally single layer microstrip antenna, bandwidth only has 1-2%, even if adopt the micro-band plate of a lot of layer stacking, energy broadening finite bandwidth, can reach an octave, but cost is high, is typically used as broad beam narrow-band transmission of wireless signals.
The beamwidth of helical antenna is narrower, and low elevation angle performance is bad, and it is larger to take volume, is unfavorable for the system integration, is generally used for the transmission of narrow beam phasing signal.
Right-angled intersection a period of time beamwidth of antenna is wide, and therefore low elevation angle performance is good, but it is large to take volume, and narrow bandwidth also only can be used for broad beam narrow-band transmission of wireless signals.
Above-mentioned antenna does not possess broadband, the ability of broad beam circularly polarized signal transmission.As everyone knows, bandwidth, the information capacity that can transmit is large, and wave beam is wide, and the ability of accepting all directions angle signal is strong.
The existing dipper system satellite fix of China and communication antenna at present, conventionally the form that adopts several narrow frequency micro-strip paster antennas or micro-strip paster antenna to add crossed dipole antenna realizes multiple spot and frequently covers, system complex, take volume large, it is more that multiple antennas integrate phase mutual interference, affect electrical property, assembling is inconvenience also.If there is a kind of wide band circular polarized antenna, can cover the working frequency range of the Big Dipper completely, will there is obvious advantage at electrical property and production fit on so.
Summary of the invention
The object of invention: for the broadband wide beam circular polarized antenna of a kind of transmitting of the circularly polarized signal that can solve broadband, broad beam and the problem of reception and the method for circular polarization are provided.
In order to reach as above object, the present invention takes following technical scheme:
Scheme 1:
Broadband wide beam circular polarized antenna, it is characterized in that, the microstrip power divider layer that structure comprises antenna stack and antenna stack below, bending gradual change a period of time that described antenna stack comprises four integrated making, four bending gradual change a period of time connect respectively a feed metal column separately, described feed metal column is connected with the microstrip power divider circuit on microstrip power divider layer, and described microstrip power divider layer is the microstrip power divider of a point four.
The further technical scheme of the present invention is, bending gradual change a period of time shape of described four integrated making is identical, and the feed metal column that it connects separately distributes perpendicular to horizontal plane and is positioned at the middle part of antenna entirety, through the total bottom surface in four bending a period of time.
The further technical scheme of the present invention is, bending gradual change a period of time surface of described four integrated making is round and smooth.
The further technical scheme of the present invention is, each self-contained tip of bending gradual change a period of time of described four integrated making, and described tip and the welding of feed metal column, described tip and ground level angle are between 20-50 degree.
The further technical scheme of the present invention is, described microstrip power divider layer comprises more than one power splitter unit or the broadband electric bridge that can control microstrip line length and realize successively 90 degree phase shifts, between multiple power splitters unit or broadband electric bridge, is connected.
The further technical scheme of the present invention is, described power splitter unit or broadband electric bridge have three, and the microstrip power divider circuit of its formation is connected respectively with more than one feed metal column.
The further technical scheme of the present invention is, described microstrip power divider laminating is contained on the total bottom surface in bending gradual change a period of time of four integrated making.
The further technical scheme of the present invention is, described antenna is integrated processing and manufacturing and is directly connected with floor, is self-supporting integrative-structure, described feed metal column does not contact with ground, the via hole of opening on floor, allows feed metal column pass, and via hole keeps concentric with feed metal column.
Scheme 2:
Utilize the method for the circular polarization of broadband wide beam circular polarized antenna as above, it is characterized in that, each unit controls microstrip line length of microstrip power divider layer realizes 90 degree phase shifts successively, microstrip power divider circuit is connected with feed metal column and is four bending gradual change a period of time feeds by this feed metal column, realizes left-handed or right-handed circular polarization radiation.
Adopt as above the present invention of technical scheme, there is following beneficial effect: adopted four unit bending gradual change a period of time of self-supporting ground connection integrative-structure, to they while feeds, realized broadband circle polarized radiation characteristic with the metal columns of four existence, 90 degree phase differences.After metal column, realize phase difference and the constant power distribution of feed with microstrip power divider.The features such as compared with prior art, it is wide that this new antenna possesses working band, and lobe width is wide, and circular polarization characteristics is good, and requirement on machining accuracy is not high, easy for installation.Be highly suitable for high performance satellite navigation ground receiving equipment, such as vehicle, boats and ships, aircraft, train etc.This ability is extremely obvious in the advantage of satellite navigation positioning field.
Accompanying drawing explanation
Fig. 1 is antenna and feeder pillar schematic diagram;
Fig. 2 is standing wave reflection coefficient analogous diagram;
Fig. 3 is feeding network schematic diagram;
Fig. 4 is antenna circular polarization radiation directional diagram;
Wherein: 1. bending gradual change a period of time; 2. feed metal column; 3. power splitter unit.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described;
Four bending gradual change a period of time 1 of self-supporting ground connection integrative-structure and four feed metal columns 2, between adopt welding connect, as shown in Figure 1.
Self-supporting ground connection integrative-structure is Promethean, bending gradual change a period of time 1 of antenna is directly connected with floor, the processing of metal one, gradual change a period of time crooked radian adopts mould to guarantee, round and smooth, insensitive to angle of bend error, most advanced and sophisticated and feed metal column 2 is weldingly connected, and between ground level angle 20-50 degree.
One point of four power splitter of microstrip structure broadband.The each branch road control of power splitter microstrip line length realizes 90 degree phase shifts successively, realizes left-handed or right-handed circular polarization radiation.The each allocation units available bandwidth of power splitter electric bridge substitutes, and can realize left-handed and circular polarization radiation dextrorotation simultaneously.Between microstrip power divider and metal column, adopt welding to be connected, as shown in Figure 2.
When assembling, upper strata is antenna stack, and lower floor is microstrip power divider layer, and microstrip power divider is back-to-back to be mounted on antenna.
Actual any satellite ground receiving equipment has the own volume to antenna, interface position, and the requirement of mounting means, therefore the present invention can have various variants in concrete practice process, and it does not cause restriction to specific embodiment of the invention.
In conjunction with Fig. 3, known this antenna standing wave reflection coefficient broader bandwidth is less than 10dB in 1.2-2.6GHz frequency range, and can, according to concrete engineering needs, further optimize.There is wider bandwidth with respect to original antenna.
In conjunction with Fig. 4, known this antenna circular polarization radiation characteristic good possesses equally larger gain in the situation of the low elevation angle.
These beneficial effects are that any antenna in the past does not all reach.
More than show and described basic principle of the present invention, principal character and advantage of the present invention.Those skilled in the art should understand the present invention and not be restricted to the described embodiments; that in above-described embodiment and specification, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in claimed scope.
Claims (9)
1. broadband wide beam circular polarized antenna, it is characterized in that, the microstrip power divider layer that structure comprises antenna stack and antenna stack below, bending gradual change a period of time (1) that described antenna stack comprises four integrated making, four bending gradual change a period of time (1) connect respectively a feed metal column (2) separately, described feed metal column (2) is connected with the microstrip power divider circuit on microstrip power divider layer, and described microstrip power divider layer is the microstrip power divider of a point four.
2. broadband wide beam circular polarized antenna as claimed in claim 1, it is characterized in that, (1) shape of bending gradual change a period of time of described four integrated making is identical, the feed metal column (2) that it connects separately distributes perpendicular to horizontal plane and is positioned at the middle part of antenna entirety, through the total bottom surface in four bending a period of time.
3. broadband wide beam circular polarized antenna as claimed in claim 1, is characterized in that, the surface of bending gradual change a period of time (1) of described four integrated making is round and smooth.
4. broadband wide beam circular polarized antenna as claimed in claim 1, it is characterized in that, each self-contained tip of bending gradual change a period of time (1) of described four integrated making, described tip and feed metal column (2) welding, described tip and ground level angle are between 20-50 degree.
5. broadband wide beam circular polarized antenna as claimed in claim 1, it is characterized in that, described microstrip power divider layer comprises more than one power splitter unit or the broadband electric bridge that can control microstrip line length and realize successively 90 degree phase shifts, between multiple power splitters unit or broadband electric bridge, is connected.
6. broadband wide beam circular polarized antenna as claimed in claim 5, is characterized in that, described power splitter unit or broadband electric bridge have three, and the microstrip power divider circuit of its formation is connected respectively with more than one feed metal column (2).
7. broadband wide beam circular polarized antenna as claimed in claim 1, is characterized in that, described microstrip power divider laminating is contained on the total bottom surface in bending gradual change a period of time (1) of four integrated making.
8. the circle of the wide bandwidth ripple as described in a claim as arbitrary in claim 1-7 bundle poliarizing antenna, it is characterized in that, described antenna is integrated processing and manufacturing and is directly connected with floor, for self-supporting integrative-structure, described feed metal column (2) does not contact with ground, the via hole of opening on floor, allows feed metal column (2) pass, and via hole keeps concentric with feed metal column (2).
9. utilize the method for the circular polarization of the broadband wide beam circular polarized antenna as described in claim 1-8, it is characterized in that, each unit controls microstrip line length of microstrip power divider layer realizes 90 degree phase shifts successively, microstrip power divider circuit is connected with feed metal column and is four bending gradual change a period of time feeds by this feed metal column, realizes left-handed or right-handed circular polarization radiation.
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| CN201210459398.6A CN103825081B (en) | 2012-11-16 | 2012-11-16 | The method of broadband and wide beamwidth circular polarized antenna and circular polarisation |
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| CN201210459398.6A CN103825081B (en) | 2012-11-16 | 2012-11-16 | The method of broadband and wide beamwidth circular polarized antenna and circular polarisation |
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| CN103825081A true CN103825081A (en) | 2014-05-28 |
| CN103825081B CN103825081B (en) | 2017-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736430A (en) * | 2020-12-24 | 2021-04-30 | 杭州电子科技大学 | Broadband wide-beam unmanned aerial vehicle navigation antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736430A (en) * | 2020-12-24 | 2021-04-30 | 杭州电子科技大学 | Broadband wide-beam unmanned aerial vehicle navigation antenna |
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| CN103825081B (en) | 2017-09-22 |
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