CN105514582A - Four-arm spiral antenna - Google Patents
Four-arm spiral antenna Download PDFInfo
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- CN105514582A CN105514582A CN201510916686.3A CN201510916686A CN105514582A CN 105514582 A CN105514582 A CN 105514582A CN 201510916686 A CN201510916686 A CN 201510916686A CN 105514582 A CN105514582 A CN 105514582A
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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
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention discloses a four-arm spiral antenna. The four-arm spiral antenna comprises a spiral arm, and the spiral arm comprises a first spiral arm portion, at least one second spiral arm portion arranged at an interval from the first spiral arm portion, and a third spiral arm portion, wherein one end of the first spiral arm portion and one end of the second spiral arm portion are connected with one end of the third spiral arm portion, and the other end of the third spiral arm portion is connected with a spiral arm feed end feeding the spiral arm. The spiral antenna provided by the invention can realize multi-frequency-range work of more than two frequency ranges with quite large frequency intervals and can also adjust input impedance of the spiral antenna through structural adjustment of the spiral arm of the spiral antenna so as to realize impedance match between an input port and a feed pot, reduce energy loss and improve the overall gain of the antenna. The spiral antenna provided by the invention is compact in structure, light in weight, small in volume and easy to process.
Description
Technical field
The invention belongs to antenna technical field, be specifically related to a kind of helical antenna, particularly relate to a kind of four-arm spiral antenna.
Background technology
Along with the development of satellite navigation system, particularly along with China's Beidou satellite navigation system development and become better and approaching perfection day by day, increasing application is obtained in military and civilian field based on the navigator fix of big-dipper satellite and mobile communication, such as transport monitoring, hydrologic monitoring, the anti-flood of flood control, and provide the integrated services such as location, communication and time service, thus serve more and more important effect in the Working Life of people.
In Satellite Navigation Technique and communication technology of satellite, as reception and the transmitting antenna of satellite-signal, helical antenna, particularly four-arm spiral antenna (QuadrifilarHelixAntenna, QHA) be a kind of antenna with circular polarization and broad beam characteristic, its antenna pattern is cardioid, and front and back are than excellent, and do not need ground connection, be therefore widely used in the technical field of radio such as satellite communication and global positioning system.
But, existing four-arm spiral antenna belongs to the resonant aerial of narrow bandwidth, the multiband work realizing wideband or two or more frequency range is wanted to be very difficult, particularly existing four-arm spiral antenna cannot realize the multiband work of frequency two or more frequency range relatively far apart, more cannot realize the input impedance regulating four-arm spiral antenna, thus realize the impedance matching of input port and feed port, to reduce energy loss and to improve entire physical gain.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of helical antenna, this helical antenna can realize the multiband work of frequency two or more frequency range relatively far apart.The input impedance of adjustable screw antenna can also be carried out according to helical antenna of the present invention by the structural adjustment of the spiral arm of four-arm spiral antenna, thus realize the impedance matching of input port and feed port, to reduce energy loss and to improve entire physical gain.
The invention provides a kind of helical antenna, comprise spiral arm, described spiral arm comprises: the first spiral arm, at least one second spiral arm and triple helical arm.First spiral arm and the second spiral arm interval are arranged.One end of first spiral arm is connected with one end of triple helical arm with one end of the second spiral arm.And the other end of triple helical arm is connected with to the spiral arm feed end of spiral arm feed.
According to an aspect of the present invention, the first spiral arm is identical with the radius of spin of the second spiral arm, and the first spiral arm is identical with the lift angle of the second spiral arm.
According to an aspect of the present invention, be launched under flat state, the first spiral arm and the second spiral arm parallel.
According to an aspect of the present invention, the first spiral arm and the second spiral arm and triple helical portion are integrally formed.
According to an aspect of the present invention, the other end of the first spiral arm is free end.
According to an aspect of the present invention, the other end of the second spiral arm is free end.
According to an aspect of the present invention, the length of the first spiral arm is greater than the length of the second spiral arm.
According to an aspect of the present invention, the first spiral arm is than the second spiral arm minister 5mm-80mm.
According to an aspect of the present invention, the length range of the first spiral arm is 20mm-200mm.
According to an aspect of the present invention, the length range of the first spiral arm is 30mm-150mm.
According to an aspect of the present invention, the length range of the first spiral arm is 40mm-100mm.
According to an aspect of the present invention, the length range of the second spiral arm is 10mm-150mm.
According to an aspect of the present invention, the length range of the second spiral arm is 20mm-100mm.
According to an aspect of the present invention, the length range of the second spiral arm is 30mm-70mm.
According to an aspect of the present invention, the length range of triple helical arm is 3mm-150mm.
According to an aspect of the present invention, the length range of triple helical arm is 10mm-120mm.
According to an aspect of the present invention, the length range of triple helical arm is 30mm-100mm.
According to an aspect of the present invention, this helical antenna also comprises columnar supporting body, and spiral arm is arranged on the periphery wall of columnar supporting body, and columnar supporting body is made up of dielectric material.
According to an aspect of the present invention, columnar supporting body is made up of flexible material, and spiral arm is printed on by typography on the surface of the columnar supporting body of deployed condition.
The helical antenna structure of structure like this is compact, and quality is light, and volume is little, and is easy to processing.
According to an aspect of the present invention, the other end of the first spiral arm extends to the top of columnar supporting body, and the other end of triple helical arm extends to the bottom of described columnar supporting body.
According to an aspect of the present invention, this helical antenna also comprises feeding network, and feeding network has feed element and the spiral arm feed end to spiral arm feed.
According to an aspect of the present invention, helical antenna is four-arm spiral antenna, and this four-arm spiral antenna comprises four described spiral arm.
According to helical antenna of the present invention, the multiband work of frequency two or more frequency range relatively far apart can be realized.The input impedance of adjustable screw antenna can also be carried out according to helical antenna of the present invention by the structural adjustment of the spiral arm of helical antenna, thus realize the impedance matching of input port and feed port, to reduce energy loss and to improve entire physical gain.And helical antenna structure of the present invention is compact, quality is light, and volume is little, and is easy to processing.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, can not be interpreted as that it is to any restriction of formation of the present invention.For those of ordinary skill in the art, other embodiments and the corresponding accompanying drawing of other embodiments can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic stereogram of helical antenna according to an embodiment of the invention;
Fig. 2 is the schematic view that helical antenna according to an embodiment of the invention expands into flat state;
Fig. 3 is the schematic structure chart of the feeding network of helical antenna according to an embodiment of the invention;
Fig. 4 is the schematic stereogram of helical antenna according to still another embodiment of the invention;
Fig. 5 is the schematic view that helical antenna according to still another embodiment of the invention expands into flat state;
Fig. 6 is the return loss schematic diagram of the helical antenna according to an embodiments of the invention example;
Fig. 7 is the high-frequency gain radiation schematic diagram of the helical antenna according to an embodiments of the invention example;
Fig. 8 is the low-frequency gain radiation schematic diagram of the helical antenna according to an embodiments of the invention example.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme of more than one embodiment of the present invention is described.Obviously, described embodiment is only the application's part execution mode, instead of whole execution modes.It should be noted that, based on these embodiments in the present invention, the every other embodiment that those of ordinary skill in the art obtain, all belongs to the scope of the application's protection.
Spiral arm is comprised according to the helical antenna that embodiments of the invention provide.Spiral arm comprises the first spiral arm, at least one second spiral arm and triple helical arm.First spiral arm and the second spiral arm interval are arranged.One end of first spiral arm is connected with one end of triple helical arm with one end of the second spiral arm.And the other end of triple helical arm is connected with to the spiral arm feed end of spiral arm feed.
In hereafter described embodiments of the invention, with reference to four-arm spiral antenna conventional in satellite positioning device and satellite communication apparatus, the present invention will be described, those skilled in the art can know, this is not construed as limiting the present invention, and concept of the present invention, thought and design can apply to the helical antenna of other kinds.
Fig. 1 is the schematic stereogram of four-arm spiral antenna 10 according to an embodiment of the invention.Fig. 2 is the schematic view expanding into flat state according to the four-arm spiral antenna 10 of the first embodiment of the present invention.As illustrated in fig. 1 and 2, four-arm spiral antenna 10 comprises spiral arm 11.Spiral arm 11 comprises the first spiral arm 111, second spiral arm 112 and triple helical arm 113.As illustrated in fig. 1 and 2, the first spiral arm 111 and the second spiral arm 112 interval are arranged.One end of first spiral arm 111 is connected with one end of triple helical arm 113 with one end of the second spiral arm 112.The other end of triple helical arm 113 is connected with to the spiral arm feed end of spiral arm feed.Here, if do not have specified otherwise, term " connection " generally refers to electrical connection.Specifically, four-arm spiral antenna 10 comprises 4 spiral arm 11.Structure due to 4 spiral arm 11 is similar, therefore, for for purpose of brevity, only marks a spiral arm 11 in the accompanying drawings.
As illustrated in fig. 1 and 2, the first spiral arm 111 is identical with the radius of spin of the second spiral arm 112.First spiral arm 111 is identical with the lift angle of the second spiral arm 112.Say further, as shown in Figure 2, be launched under flat state, the first spiral arm 111 and the second spiral arm 112 parallel.Say further, triple helical arm 113 is identical with the radius of spin of the second spiral arm 112 with the first spiral arm 111.Triple helical arm 113 is identical with the lift angle of the second spiral arm 112 with the first spiral arm 111.
Say further, as illustrated in fig. 1 and 2, the first spiral arm 111 and the second spiral arm 112 and triple helical portion 113 are integrally formed.
In this embodiment, as illustrated in fig. 1 and 2, the other end of the first spiral arm 111 is free end.The other end of the second spiral arm 112 is free end.Here, free end refers to the one end be not electrically connected with other objects.
As shown in Figure 1, four-arm spiral antenna 10 also comprises columnar supporting body 12, and spiral arm 11 is arranged on the periphery wall of columnar supporting body 12.Columnar supporting body 12 can adopt the shape of any applicable making helical antenna, such as cylindrical, cylindrical shape, tubulose etc.In a kind of embodiment, columnar supporting body 12 can roll with sheet material or film and form.Columnar supporting body 12 is made up of dielectric material, and preferred columnar supporting body 12 material is flexible media film.Preferably, columnar supporting body 12 adopts the material of high-k to make, and described material is such as but is not limited to plexiglas, plastics, pottery etc.
Say further, spiral arm 11 moulding process that 4 spiral arm 11 are commonly used by this area is formed on the periphery wall of columnar supporting body 12.Such as when columnar supporting body 12 is made up of flexible material, 4 spiral arm 11 are printed on the surface of columnar supporting body 12 of deployed condition by typography.Then, become column by this flexible material curling thus obtain the columnar supporting body 12 that support 4 spiral arm 11.The four-arm spiral antenna compact conformation of structure like this, quality is light, and volume is little, and is easy to processing.
As illustrated in fig. 1 and 2, the other end of the first spiral arm 111 extends to the top of columnar supporting body 12.The other end of triple helical arm 113 extends to the bottom of columnar supporting body 12.Four-arm spiral antenna 10 also comprises base 13.The bottom of columnar supporting body 12 is fixedly connected with the base 13 being provided with feeding network.
In the present embodiment, four-arm spiral antenna 10 also comprises feeding network 2.Fig. 3 is the schematic structure chart of the feeding network 2 of four-arm spiral antenna 10 according to an embodiment of the invention.As shown in Figure 3, feeding network 2 has feed element 201 and the spiral arm feed end to spiral arm feed.Feed element 201 can be T-shaped power splitter, Wilkinson power divider or four arm electrical bridge.
As shown in Figure 3, feeding network 2 also comprises transmission line 202,203,204,205 and 206, and transmission line 203,204,205 and 206 is connected respectively to the spiral arm feed end corresponding with 4 spiral arm 11.Feeding network 2 also comprises coaxial feed end 14.Transmission line 202 connects coaxial feed end 14 and feed element 201.Coaxial feed end 14 connects external radio frequency circuit.Thus four auxiliary arms 11 of four-arm spiral antenna 10 are followed successively by the constant amplitude feed of 90 ° of phase differences.
The four-arm spiral antenna 10 of structure like this can have 2 working frequency range simultaneously.Specifically, the first radiant body is formed by the first spiral arm 111 and triple helical arm 113.First radiant body corresponds to a working frequency range (the first working frequency range).The second radiant body is formed by the second spiral arm 112 and triple helical arm 113.Second radiant body corresponds to another working frequency range.The summation of the length of the first spiral arm 111 and triple helical arm 113 is the integral multiple of 1/4th operation wavelengths corresponding with it, i.e. M*lambda/4 (M is integer, and lambda represents the operation wavelength corresponding with it).When M is odd number, spiral arm non-feeding end is opened a way; When M is even number, spiral arm non-feeding terminal shortcircuit.The current amplitude of four spiral arm feed ends is equal, the phase of adjacent port 90 degree, and namely four ports are respectively 0,90 °, 180 °, 270 °.Equally, the length summation of the second spiral arm 112 and triple helical arm 113 is the integral multiple of 1/4th operation wavelengths corresponding with it.
Say further, in this embodiment, as illustrated in fig. 1 and 2, the length of the first spiral arm 111 is greater than the length of the second spiral arm 112.More particularly, the long 5mm-80mm of the first spiral arm 111 to the second spiral arm 112.The length range of the first spiral arm 111 is 20mm-200mm.Preferably, the length range of the first spiral arm 111 is 30mm-150mm.Better, the length range of the first spiral arm 111 is 40mm-100mm.Such as, the length of the first spiral arm can be 50mm, 60mm, 75mm.The length range of the second spiral arm 112 is 10mm-150mm.Preferably, the length range of the second spiral arm 112 is 20mm-100mm.Better, the length range of the second spiral arm 112 is 30mm-70mm.Such as, the length of the second spiral arm 112 can be 30mm, 45mm, 60mm.
The length range of triple helical arm 113 is 3mm-150mm.Preferably, the length range of triple helical arm 113 is 10mm-120mm.Better, the length range of triple helical arm 113 is 30mm-100mm.Can be such as 50mm, 80mm, 100mm.
The helical antenna 10 of structure like this can realize frequency two band operation relatively far apart.The input impedance of four-arm spiral antenna 10 can also be regulated according to helical antenna of the present invention by the structural adjustment of the spiral arm of helical antenna, thus realize the impedance matching of input port and feed port, to reduce energy loss and to improve entire physical gain.Specifically, by regulating the length of triple helical arm 113 to be adjusted to the integral multiple of 1/4th operation wavelengths corresponding with it, thus realize the impedance matching of input port and feed port, to reduce energy loss and to improve entire physical gain.
Be described with reference to Fig. 1-3 pairs of one embodiment of the present of invention above.To in the description of this embodiment, be only provided with a second spiral arm 112.The present invention is not limited to this.The present invention can also arrange the second spiral arm 112 of more than 2.In this case, in the present embodiment, each in the second spiral arm 112 of more than 2 is equally applicable to the description of the second spiral arm 112.That is, helical antenna according to the present invention comprises the first spiral arm, at least one the second spiral arm, triple helical arm.In this case, the length of each second spiral arm 112 is different, to correspond to different working frequency range.
Below, with reference to Figure 4 and 5 description four-arm spiral antenna 20 according to still another embodiment of the invention.In figures 4 and 5, the part that four-arm spiral antenna 20 is identical with four-arm spiral antenna 10 is labeled with identical Reference numeral, and omits the description to it.
As shown in Figures 4 and 5, four-arm spiral antenna 20 comprises spiral arm 21.Spiral arm 21 comprises the first spiral arm 211, second spiral arm 212 and triple helical arm 213.Different from a upper embodiment, in this embodiment, the first spiral arm 211, second spiral arm 212 is longer relative to triple helical arm 213.In addition, the acute angle portion of the other end (namely near one end of base 13) of triple helical arm 213 is removed.
It should be noted that, the acute angle portion of the other end (namely near one end of base 13) of the triple helical arm 113 in a upper embodiment also can be removed.
An example of four-arm spiral antenna is according to an embodiment of the invention described referring to Fig. 6,7 and 8.To understand the present invention further.Wherein, Fig. 6 is the return loss schematic diagram of the helical antenna according to an embodiments of the invention example; Fig. 7 is the high-frequency gain radiation schematic diagram of the helical antenna according to an embodiments of the invention example; Fig. 8 is the low-frequency gain radiation schematic diagram of the helical antenna according to an embodiments of the invention example.
In this example, the length of the first spiral arm is 75mm, and the length of the second spiral arm is 45mm, and the length of triple helical arm is 100mm; First radiant body length is that 175mm (the first spiral arm adds the length of triple helical arm) is operated in GPSL2 frequency range (1227MHz), and the second radiant body length is that 145mm (the second spiral arm adds the length of triple helical arm) is operated in GPSL1 frequency range (1575MHz); Wherein, the first spiral arm, the second spiral arm and triple helical arm are printed on that diameter is 44mm, highly for 136mm, thickness are on the flexible media film of 0.1mm, the lift angle of each spiral arm is 50.88 degree.Fig. 6 is the return loss plot of L1 and L2 frequency range, Fig. 7 and Fig. 8 is the left-right rotary gain radiation directional diagram of high and low frequency.
The working frequency range of the four-arm spiral antenna disclosed in above-described embodiment includes but not limited to GPS:L1 (1575MHz), L2 (1227MHz), L5 (1176MHz); BD1:Tx (1616MHz), Rx (2492MHz); BD2:B1 (1561MHz), B2 (1207MHz), B3 (1268MHz) and GLONASS:L1 (1602MHz), L2 (1246MHz).
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical or equivalent elements.In addition, term " on ", D score, " top ", " end " etc. do not form absolute spatial relationship restriction, just a kind of relative concept.
Be described in detail a kind of helical antenna that the application provides above, apply specific case herein and set forth the principle of the application and execution mode, the explanation of above embodiment is just for helping method and the inventive concept of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. a helical antenna, comprises spiral arm, it is characterized in that, described spiral arm comprises:
First spiral arm;
At least one second spiral arm, described first spiral arm and described second spiral arm interval are arranged; With
Triple helical arm, one end of described first spiral arm is connected with one end of described triple helical arm with one end of described second spiral arm, and the other end of described triple helical arm is connected with to the spiral arm feed end of described spiral arm feed.
2. helical antenna as claimed in claim 1, is characterized in that,
Described first spiral arm is identical with the radius of spin of described second spiral arm, and described first spiral arm is identical with the lift angle of described second spiral arm.
3. helical antenna as claimed in claim 1, is characterized in that,
Be launched under flat state, described first spiral arm and described second spiral arm parallel.
4. helical antenna as claimed in claim 1, is characterized in that,
First spiral arm and the second spiral arm and described triple helical portion are integrally formed.
5. helical antenna as claimed in claim 1, is characterized in that,
The other end of described first spiral arm is free end; Or
The other end of described second spiral arm is free end.
6. helical antenna as claimed in claim 1, is characterized in that,
The length of described first spiral arm is greater than the length of described second spiral arm.
7. helical antenna as claimed in claim 6, is characterized in that,
The length range of described first spiral arm is 20mm-200mm;
The length range of described second spiral arm is 10mm-150mm;
Described first spiral arm is than described second spiral arm minister 5mm-80mm;
The length range of described triple helical arm is 3mm-150mm.
8. helical antenna as claimed in claim 1, is characterized in that,
Described helical antenna also comprises columnar supporting body, and described spiral arm is arranged on the periphery wall of described columnar supporting body, and described columnar supporting body is made up of dielectric material.
9. helical antenna as claimed in claim 8, is characterized in that,
Described columnar supporting body is made up of flexible material, and described spiral arm is printed on by typography on the surface of the columnar supporting body of deployed condition.
10., as the helical antenna in claim 1-9 as described in any one, it is characterized in that,
Described helical antenna is four-arm spiral antenna, and described four-arm spiral antenna comprises four described spiral arm.
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| CN201510916686.3A CN105514582A (en) | 2015-12-10 | 2015-12-10 | Four-arm spiral antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510916686.3A CN105514582A (en) | 2015-12-10 | 2015-12-10 | Four-arm spiral antenna |
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| CN105514582A true CN105514582A (en) | 2016-04-20 |
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Cited By (10)
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| CN106058472A (en) * | 2016-06-01 | 2016-10-26 | 深圳市华信天线技术有限公司 | Dual-frequency and four-arm helical antenna and handheld terminal using the same |
| CN106450688A (en) * | 2016-07-11 | 2017-02-22 | 深圳市维力谷无线技术股份有限公司 | Satellite communication antenna based on quadrifilar helix technology |
| CN106532230A (en) * | 2016-12-30 | 2017-03-22 | 广州中海达卫星导航技术股份有限公司 | Helical antenna for unmanned aerial vehicle |
| CN106972248A (en) * | 2017-03-28 | 2017-07-21 | 南京邮电大学 | The conformal four-arm spiral antenna of one kind miniaturization printing |
| CN107146942A (en) * | 2017-04-07 | 2017-09-08 | 深圳市景程信息科技有限公司 | Double-frequency quadrifilar helix antenna applied to satellite navigation |
| CN107171059A (en) * | 2017-04-07 | 2017-09-15 | 深圳市景程信息科技有限公司 | Four-arm spiral antenna with circular polarization characteristics |
| CN107611590A (en) * | 2017-10-16 | 2018-01-19 | 福建福大北斗通信科技有限公司 | Compact dual-frequency satellite communication hand-held terminal antenna and its application method |
| WO2018184346A1 (en) * | 2017-04-07 | 2018-10-11 | 深圳市景程信息科技有限公司 | Dual-frequency quadrifilar helical antenna |
| CN111029737A (en) * | 2019-11-22 | 2020-04-17 | 深圳市鼎耀科技有限公司 | Compact circularly polarized omnidirectional antenna |
| CN112490661A (en) * | 2020-11-23 | 2021-03-12 | 上海海积信息科技股份有限公司 | Impedance matching device and antenna |
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Application publication date: 20160420 |