CN106711609A - Low-profile frequency conversion four-arm helical antenna and frequency conversion method thereof - Google Patents
Low-profile frequency conversion four-arm helical antenna and frequency conversion method thereof Download PDFInfo
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- CN106711609A CN106711609A CN201710018072.2A CN201710018072A CN106711609A CN 106711609 A CN106711609 A CN 106711609A CN 201710018072 A CN201710018072 A CN 201710018072A CN 106711609 A CN106711609 A CN 106711609A
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- arm
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- frequency conversion
- spiral
- low section
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a low-profile frequency conversion four-arm helical antenna which comprises a low-profile frequency conversion structure, a helical arm radiation structure and a metal floor, wherein the low-profile frequency conversion structure is composed of a medium plate and saw-tooth-shaped metal strips printed on the medium plate; and the saw-tooth-shaped metal strips are arrayed along a winding direction of the helical arm radiation structure. The saw-tooth-shaped metal strips are provided with saw teeth for accurately adjusting the length of the metal strips. The invention further discloses a frequency conversion method based on the four-arm helical antenna; and the saw teeth on the saw-tooth-shaped metal strips are cut in sequence, so that the effect of accurately changing the resonance frequency of the antenna is realized. The low-profile frequency conversion four-arm helical antenna is simple in structure, convenient to adjust and wide in applicability; when the low-profile frequency conversion structure is used, the radiation performance of the four-arm helical antenna can be improved, and the resonance frequency of the four-arm helical antenna can also be improved; and influences, including engineering errors, machining processes, material parameter deviation and the like, capable of causing antenna frequency imbalance are made up.
Description
Technical field
The invention belongs to antenna technical field, more particularly to a kind of low section frequency conversion four-arm spiral antenna further relates to one kind
For the frequency modulation method of above-mentioned 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, there is provided to the radio-frequency front-end treatment in terminal, navigation satellite signal and correlation are obtained with this
Data message, therefore, the quality of antenna performance 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 antenna ripple wider
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.
After four-arm spiral antenna is suggested in nineteen sixty-eight, 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 four arm spirals of the four-arm spiral antenna and wire coiling using printing structure
Antenna, such as Authorization Notice No. disclose a kind of omnidirectional's quadrifilar helix antenna device for the Chinese patent of CN205646139U, 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, low section is realized on flexible PCB by the way that metal band is printed on, due to be using printing structure
Spiral arm, the low section implementation method is not suitable for by the spiral arm of wire coiling, with certain limitation, while the day
Line does not consider flexible PCB relative dielectric constant, thickness and circuit fabrication, assembling equal error can cause on 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 the Chinese patent of CN205583136U is disclosed 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 each extend 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, but
Same principle cannot be used, i.e., by cutting auger arm, variable frequency adjustment is carried out come the four-arm spiral antenna to wire coiling.Mesh
Before, realized for the low section of the four-arm spiral antenna of wire coiling and corresponding frequency conversion problem still cannot be obtained preferably
Solution.
The content of the invention
Defect of the present invention for prior art, there is provided a kind of low section frequency conversion four-arm spiral antenna and its frequency conversion side
Method.
The technical scheme that the present invention takes is as follows：
A kind of low section frequency conversion four-arm spiral antenna, including：Low section conversion architecture, spiral arm irradiation structure, metal ground
Plate；
Serrated metal band of the low section conversion architecture by dielectric-slab and printing thereon is constituted；Serrated metal bar
Band curls up direction along spiral arm irradiation structure arranges；
The serrated metal bar takes the rectangle sawtooth being provided with 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.
A kind of conversion method of low section frequency conversion four-arm spiral antenna, by cutting the saw in low section conversion architecture successively
Sawtooth on tooth form metal band, adjusts the length of serrated metal band, realizes accurate change four-arm spiral antenna resonance frequently
The effect of rate.
Compared with prior art the advantage of the invention is that：Easy to adjust with simple structure, applicability is wide, by increasing
Plus low section conversion architecture improves the radiance of four-arm spiral antenna, while can be by accurate regulation low section frequency conversion knot
The length of serrated metal band changes the resonant frequency of four-arm spiral antenna on structure, makes up Engineering Error, processing technology, material
Material parameter error etc. causes the influence of four-arm spiral antenna frequency misalignment.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the close-up schematic view of serrated metal band in the low section conversion architecture of the embodiment of the present invention；
Fig. 3 is the antenna reflection coefficient curve map of the embodiment of the present invention；
X-z surface radiation directional diagrams of the Fig. 4 corresponding to center of antenna frequency in the embodiment of the present invention；
Fig. 5 is to remove x-z surface radiations corresponding to low section conversion architecture aft antenna centre frequency in the embodiment of the present invention
Directional diagram；
Fig. 6 is different sawtooth number antenna reflection coefficient curve maps in the embodiment of the present invention；
Fig. 7 be in the embodiment of the present invention different sawtooth number maximum right-handed circular polarization gains with frequency change curve；
Drawing reference numeral explanation：1. low section conversion architecture, 2. spiral arm irradiation structure, 3. metal floor, 11. dielectric-slabs,
12. serrated metal bands, 13. sawtooth.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention become more apparent, develop simultaneously embodiment referring to the drawings, right
The present invention is described in further details.
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；
Serrated metal band 12 of the low section conversion architecture 1 by dielectric-slab 11 and printing thereon is constituted；Zigzag
Metal band 12 curls up direction along spiral arm irradiation structure arranges；
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 for accurate adjustment metal band length to saw 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.
A kind of conversion method of low section frequency conversion four-arm spiral antenna, by cutting the saw in low section conversion architecture successively
Sawtooth on tooth form metal band, adjusts the length of serrated metal band, realizes accurate change four-arm spiral antenna resonance frequently
The effect of rate.
The reflection coefficient curve of embodiment of the present invention antenna in centre frequency is as shown in figure 3, the reflectance factor of antenna exists
In the frequency band range of 1.263GHz to 1.274GHz, reflectance factor shows that antenna port matching is good, feedback all below -10dB
The electromagnetic wave signal for entering can be absorbed by antenna.
X-z surface radiation directional diagram curves in the embodiment of the present invention corresponding to center of antenna frequency are as shown in figure 4, antenna exists
Right-handed circular polarization gain in normal orientation is 3.8dB, and left-hand circular polarization gain is -50dB, and the right-handed circular polarization ratio of gains is left-handed
The big 53.8dB of circular polarisation gain, shows antenna circular polarisation function admirable.
Remove the x-z surface radiation directional diagrams corresponding to low section conversion architecture aft antenna centre frequency in the embodiment of the present invention
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 be -49dB；
And pass through to increase the radiance that low section conversion architecture improves four-arm spiral antenna, dextrorotation entelechy of the antenna in normal orientation
Change gain is 3.8dB, and left-hand circular polarization gain is -50dB, shows that the dextrorotation of antenna can be improved using low section conversion architecture
Circular polarisation gain, reduces the left-hand circular polarization gain of antenna.
Influence of the different sawtooth numbers to antenna reflection coefficient is as shown in fig. 6, work as sawtooth number not in the embodiment of the present invention
When changing, the input impedance resonance frequency of antenna is 1.2685GHz, and when sawtooth number increases by two, that is, is increased
0.2mm, input impedance resonance frequency is changed into 1.263GHz, reduces 5.5MHz, with should sawtooth number reduce two when, that is, contract
Short 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 be with
The accurate input impedance resonance frequency for changing antenna.
Influence of the different sawtooth numbers to antenna maximum right-handed circular polarization gain is as shown in fig. 7, work as in the embodiment of the present invention
When sawtooth number does not change, frequency when antenna right-handed circular polarization gain is maximum is 1.2685GHz, and works as the increasing of sawtooth number
Plus at two, that is, increasing 0.2mm, frequency when right-handed circular polarization gain is maximum is 1.263GHz, reduces 5.5MHz, together should
When sawtooth number reduces two, that is, shorten 0.2mm, frequency when right-handed circular polarization gain is maximum is 1.274GHz, is increased
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 hair
Bright implementation, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.Ability
The those of ordinary skill in domain can according to these technical inspirations disclosed by the invention make it is various do not depart from essence of the invention its
Its various specific deformation and combination, these deformations and combination are still within the scope of the present invention.
Claims (3)
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；
Serrated metal band of the low section conversion architecture by dielectric-slab and printing thereon is constituted；Serrated metal band edge
Spiral arm irradiation structure curls up direction arrangement；
The serrated metal bar takes the rectangle sawtooth being provided with 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
It is 0.1mm*0.2mm.
3. a kind of conversion method of low section frequency conversion four-arm spiral antenna, it is characterised in that：By cutting low section frequency conversion successively
The sawtooth that serrated metal bar in structure takes, adjusts the length of serrated metal band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018072.2A CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018072.2A CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106711609A true CN106711609A (en) | 2017-05-24 |
| CN106711609B CN106711609B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018072.2A Active CN106711609B (en) | 2017-01-10 | 2017-01-10 | Frequency conversion method of low-profile frequency conversion four-arm spiral antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482309A (en) * | 2017-08-04 | 2017-12-15 | 江苏宁光通信设备有限公司 | A kind of double V-shaped side hanging frequency modulation broadcasting circular polarized antenna |
| CN109301434A (en) * | 2018-10-09 | 2019-02-01 | 江苏三和欣创通信科技有限公司 | A kind of high-precision four-arm spiral antenna |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482309A (en) * | 2017-08-04 | 2017-12-15 | 江苏宁光通信设备有限公司 | A kind of double V-shaped side hanging frequency modulation broadcasting circular polarized antenna |
| CN107482309B (en) * | 2017-08-04 | 2019-10-01 | 江苏宁光通信设备有限公司 | A kind of double V-shaped side hanging frequency modulation broadcasting circular polarized antenna |
| CN109301434A (en) * | 2018-10-09 | 2019-02-01 | 江苏三和欣创通信科技有限公司 | A kind of high-precision four-arm spiral antenna |
| CN109301434B (en) * | 2018-10-09 | 2020-04-14 | 江苏三和欣创通信科技有限公司 | High-precision four-arm helical antenna |
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| Publication number | Publication date |
|---|---|
| CN106711609B (en) | 2023-05-09 |
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