CN206364188U - A kind of low section frequency conversion four-arm spiral antenna - Google Patents
A kind of low section frequency conversion four-arm spiral antenna Download PDFInfo
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- CN206364188U CN206364188U CN201720028473.1U CN201720028473U CN206364188U CN 206364188 U CN206364188 U CN 206364188U CN 201720028473 U CN201720028473 U CN 201720028473U CN 206364188 U CN206364188 U CN 206364188U
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- spiral
- metal band
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 43
- 238000007639 printing Methods 0.000 claims abstract description 7
- 230000005855 radiation Effects 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000010287 polarization Effects 0.000 description 22
- 239000000758 substrate Substances 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000013475 authorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000010363 phase shift Effects 0.000 description 2
- 238000010219 correlation analysis Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
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Abstract
The utility model discloses a kind of low section frequency conversion four-arm spiral antenna, including low section conversion architecture, spiral arm irradiation structure, metal floor.The low section conversion architecture is made up of the serrated metal band of dielectric-slab and printing thereon；Serrated metal band curls up direction arrangement along spiral arm irradiation structure.The serrated metal bar takes the useful sawtooth in accurate adjustment metal band length.The conversion method based on the four-arm spiral antenna is also disclosed, by the sawtooth on cast-cutting saw tooth form metal band successively, the accurate effect for changing antenna resonant frequency is realized.The utility model is simple in construction, it is easy to adjust, applicability is wide, the radiance of four-arm spiral antenna can not only be improved by low section conversion architecture, it can also change the resonant frequency of four-arm spiral antenna simultaneously, make up the influence that Engineering Error, processing technology, material parameter deviation etc. cause antenna frequencies to lack of proper care.
Description
Technical field
The utility model belongs to antenna technical field, more particularly to a kind of low section frequency conversion four-arm spiral antenna.
Background technology
Antenna is the essential elements in satellite navigation system terminal, and satellite navigation system terminal receives navigation by antenna
The electromagnetic wave signal of satellite launch obtains navigation satellite signal and correlation there is provided to the radio-frequency front-end processing in terminal with this
Data message, therefore, antenna performance quality will directly affect the normal operating conditions of satellite navigation system terminal.
The intrinsic orbit distribution characteristic of aeronautical satellite, it is desirable to which the navigation terminal of ground wide-area applications has wider antenna ripple
Beam width, while in order to reduce the polarization loss between navigation satellite antenna and navigation terminal antenna, then requiring navigation terminal day
Line has good circular polarisation performance.
Four-arm spiral antenna is after nineteen sixty-eight is suggested, because it has circular polarisation, heart-shaped broad beam spoke in far field
Field is penetrated, is widely used in GPS, correlation analysis is theoretical and design criteria is gradually improved.It is currently used for
The four-arm spiral antenna of navigation terminal is mainly the four-arm spiral antenna using printing structure and four arm spirals of wire coiling
Antenna, such as Authorization Notice No. disclose a kind of omnidirectional's quadrifilar helix antenna device for CN205646139U Chinese patent, including
Four arm spiral radiation units, reflecting plate and phase shift feeding network, four described arm spiral radiation units are by flexible media circuit board
On four spiral radiation arms composition, four spiral radiation arms are connected in bottom by a matched line, four spiral radiations
The input of arm is connected by linking probe with beneath phase shift feeding network.Omnidirectional's four-arm spiral antenna belongs to printing structure
Four-arm spiral antenna, realize low section by the way that metal band is printed on flexible PCB, due to be using printing structure
Spiral arm, the low section implementation method be not suitable for by wire coiling spiral arm, with certain limitation, while the day
Line does not consider flexible PCB relative dielectric constant, circuit fabrication, assembling equal error can cause on thickness and flexible PCB
The problem of antenna actual operating frequency off-design value.Because Practical Project and fabrication error are inevitable, in Antenna Design
During these factors must be taken into account, can just make the antenna of design has engineering and technological feasibility and practical application
Value.Authorization Notice No. for CN205583136U Chinese patent disclose it is a kind of can accurate frequency modulation circular polarization microstrip antenna,
Including：It is micro-strip dielectric substrate, circularly polarization microstrip patch, metal probe joint, metallization via, feeding network dielectric substrate, same
Shaft coupling, feeding network and grounded metal；Circularly polarization microstrip patch is fixed on micro-strip dielectric substrate upper surface, circularly polarization microstrip patch
Piece upper and lower surface is designed with grounded metal, and the grounded metal of upper surface is fitted with micro-strip dielectric substrate；Feeding network is located at feed
In network medium substrate, metal probe joint is in micro-strip dielectric substrate；Energy is fed electric bridge power splitter by coaxial fitting
Feeding network, and then fed circularly polarization microstrip patch by metal probe joint, 4 sides of circularly polarization microstrip patch are each extended over
Go out a regulation minor matters.The microstrip antenna carries out frequency modulation by cutting the area of change regulation minor matters to microstrip antenna, still
Same principle can not be used, i.e., by cutting auger arm, variable frequency adjustment is carried out to the four-arm spiral antenna of wire coiling.Mesh
Before, the low section for the four-arm spiral antenna of wire coiling is realized and corresponding frequency conversion problem still can not be obtained preferably
Solution.
Utility model content
There is provided a kind of low section frequency conversion four-arm spiral antenna and its frequency conversion for the defect of prior art for the utility model
Method.
The technical scheme that the utility model is taken is as follows：
A kind of low section frequency conversion four-arm spiral antenna, including：Low section conversion architecture, spiral arm irradiation structure, metal
Plate；
The low section conversion architecture is made up of the serrated metal band of dielectric-slab and printing thereon；Serrated metal bar
Band curls up direction arrangement along spiral arm irradiation structure；
The serrated metal bar is taken provided with the rectangle sawtooth for accurate adjustment metal band length, the shape of sawtooth
Shape structure is identical, is evenly distributed on metal band；
The spiral arm irradiation structure is made up of four strip structure identical spiral arms；The metal floor 3 is used as spiral shell
The reference ground of spiral arm irradiation structure；The spiral arm upper end passes through the dielectric-slab and serrated metal in low section conversion architecture
Band is connected.
Preferably, the size of sawtooth is 0.1mm*0.2mm.
Compared with prior art the utility model has the advantage of：Easy to adjust with simple in construction, applicability is wide, leads to
The radiance that increase low section conversion architecture improves four-arm spiral antenna is crossed, while can become by accurately adjusting low section
The length of serrated metal band changes the resonant frequency of four-arm spiral antenna in frequency structure, makes up Engineering Error, processing work
Skill, material parameter deviation etc. cause the influence of four-arm spiral antenna frequency misalignment.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 illustrates for the partial enlargement of serrated metal band in the low section conversion architecture of the utility model embodiment
Figure；
Fig. 3 is the antenna reflection coefficient curve map of the utility model embodiment；
Fig. 4 is the x-z surface radiation directional diagrams corresponding to center of antenna frequency in the utility model embodiment；
Fig. 5 is to remove x-z faces corresponding to low section conversion architecture aft antenna centre frequency in the utility model embodiment
Antenna pattern；
Fig. 6 is different sawtooth number antenna reflection coefficient curve maps in the utility model embodiment；
Fig. 7 is change curve of the different maximum right-handed circular polarization gains of sawtooth number in the utility model embodiment with frequency
Figure；
Drawing reference numeral explanation：1. low section conversion architecture, 2. spiral arm irradiation structures, 3. metal floors, 11. dielectric-slabs,
12. serrated metal band, 13. sawtooth.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
Example, is described in further details to the utility model.
As shown in figure 1, a kind of low section frequency conversion four-arm spiral antenna, including：Low section conversion architecture 1, spiral arm radiation
Structure 2, metal floor 3；
The low section conversion architecture 1 is made up of the serrated metal band 12 of dielectric-slab 11 and printing thereon；Zigzag
Metal band 12 curls up direction arrangement along spiral arm irradiation structure；
The spiral arm irradiation structure 2 is made up of four strip structure identical spiral arms；The metal floor 3 is used as spiral shell
The reference ground of spiral arm irradiation structure 2；The spiral arm upper end passes through dielectric-slab 11 and zigzag in low section conversion architecture 1
Metal band 12 is connected.
As shown in Fig. 2 there is the rectangle saw for accurate adjustment metal band length on the serrated metal band 12
Tooth 13, the shape and structure of sawtooth 13 is identical, is evenly distributed on metal band；
In order to take into account frequency conversion precision and cutting accuracy, the size of sawtooth is 0.1mm*0.2mm.
The sawtooth taken by the serrated metal bar cut successively in low section conversion architecture, adjusts serrated metal bar
The length of band, realizes the accurate effect for changing four-arm spiral antenna resonant frequency.
The reflection coefficient curve of the utility model embodiment antenna in centre frequency is as shown in figure 3, the reflection system of antenna
Number is in 1.263GHz to 1.274GHz frequency band range, and reflectance factor shows that antenna port matching is good all below -10dB
Good, the electromagnetic wave signal of feed-in can be absorbed by antenna.
X-z surface radiation directional diagram curves in the utility model embodiment corresponding to center of antenna frequency are as shown in figure 4, day
Right-handed circular polarization gain of the line in normal orientation is 3.8dB, and left-hand circular polarization gain is -50dB, the right-handed circular polarization ratio of gains
The big 53.8dB of left-hand circular polarization gain, shows antenna circular polarisation function admirable.
Remove the x-z surface radiation sides corresponding to low section conversion architecture aft antenna centre frequency in the utility model embodiment
To figure curve as shown in figure 5, right-handed circular polarization gain of the antenna in normal orientation be 2.4dB, left-hand circular polarization gain for-
49dB；And the radiance of four-arm spiral antenna is improved by increasing low section conversion architecture, the right side of the antenna in normal orientation
Hand circular polarization gain is 3.8dB, and left-hand circular polarization gain is -50dB, shows that using low section conversion architecture antenna can be improved
Right-handed circular polarization gain, reduce antenna left-hand circular polarization gain.
Influence of the different sawtooth numbers to antenna reflection coefficient is as shown in fig. 6, when sawtooth in the utility model embodiment
When number does not change, the input impedance resonance frequency of antenna is 1.2685GHz, and when sawtooth number increases by two, that is, is increased
Long 0.2mm, input impedance resonance frequency is changed into 1.263GHz, reduces 5.5MHz, with should sawtooth number reduce two when, i.e.,
Shorten 0.2mm, input impedance resonance frequency is changed into 1.274GHz, increases 5.5MHz, it can thus be appreciated that the number of regulation sawtooth can
Accurately to change the input impedance resonance frequency of antenna.
Influence such as Fig. 7 institute of the different sawtooth numbers to the maximum right-handed circular polarization gain of antenna in the utility model embodiment
Show, when sawtooth number does not change, frequency when antenna right-handed circular polarization gain is maximum is 1.2685GHz, and works as sawtooth
When number increases by two, that is, increase 0.2mm, frequency when right-handed circular polarization gain is maximum is 1.263GHz, reduces 5.5MHz,
With should sawtooth number reduce two when, that is, shorten 0.2mm, frequency when right-handed circular polarization gain is maximum is 1.274GHz, is risen
High 5.5MHz, it can thus be appreciated that the number of regulation sawtooth can accurately change the resonant frequency of aerial radiation.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this reality
With new implementation, it should be understood that protection domain of the present utility model is not limited to such especially statement and implemented
Example.One of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this reality
With new substantive other various specific deformations and combination, these deformations and combination are still in protection domain of the present utility model
It is interior.
Claims (2)
1. a kind of low section frequency conversion four-arm spiral antenna, it is characterised in that including：Low section conversion architecture, spiral arm radiation knot
Structure, metal floor；
The low section conversion architecture is made up of the serrated metal band of dielectric-slab and printing thereon；Serrated metal band edge
Spiral arm irradiation structure curls up direction arrangement；
The serrated metal bar is taken provided with the rectangle sawtooth for accurate adjustment metal band length, the shape knot of sawtooth
Structure is identical, is evenly distributed on metal band；
The spiral arm irradiation structure is made up of four strip structure identical spiral arms；The metal floor 3 is used as spiral arm
The reference ground of irradiation structure；The spiral arm upper end passes through dielectric-slab and serrated metal band in low section conversion architecture
It is connected.
2. a kind of low section frequency conversion four-arm spiral antenna according to claim 1, it is characterised in that：The size of the sawtooth
For 0.1mm*0.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720028473.1U CN206364188U (en) | 2017-01-10 | 2017-01-10 | A kind of low section frequency conversion four-arm spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720028473.1U CN206364188U (en) | 2017-01-10 | 2017-01-10 | A kind of low section frequency conversion four-arm spiral antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206364188U true CN206364188U (en) | 2017-07-28 |
Family
ID=59380016
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720028473.1U Expired - Fee Related CN206364188U (en) | 2017-01-10 | 2017-01-10 | A kind of low section frequency conversion four-arm spiral antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711609A (en) * | 2017-01-10 | 2017-05-24 | 成都北斗天线工程技术有限公司 | Low-profile frequency conversion four-arm helical antenna and frequency conversion method thereof |
| CN109509964A (en) * | 2018-10-29 | 2019-03-22 | 成都市克莱微波科技有限公司 | A kind of broadband circle polarized array antenna |
| CN110611162A (en) * | 2019-09-18 | 2019-12-24 | 西安矩阵无线科技有限公司 | Satellite-borne miniaturized double-frequency quadrifilar helix antenna |
-
2017
- 2017-01-10 CN CN201720028473.1U patent/CN206364188U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711609A (en) * | 2017-01-10 | 2017-05-24 | 成都北斗天线工程技术有限公司 | Low-profile frequency conversion four-arm helical antenna and frequency conversion method thereof |
| CN109509964A (en) * | 2018-10-29 | 2019-03-22 | 成都市克莱微波科技有限公司 | A kind of broadband circle polarized array antenna |
| CN110611162A (en) * | 2019-09-18 | 2019-12-24 | 西安矩阵无线科技有限公司 | Satellite-borne miniaturized double-frequency quadrifilar helix antenna |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 |
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| CF01 | Termination of patent right due to non-payment of annual fee |