CN110085982A - Ultra wideband dual polarization antenna and preparation method thereof - Google Patents
Ultra wideband dual polarization antenna and preparation method thereof Download PDFInfo
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- CN110085982A CN110085982A CN201910403550.0A CN201910403550A CN110085982A CN 110085982 A CN110085982 A CN 110085982A CN 201910403550 A CN201910403550 A CN 201910403550A CN 110085982 A CN110085982 A CN 110085982A
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- 230000010287 polarization Effects 0.000 title claims abstract description 59
- 230000009977 dual effect Effects 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title description 6
- 230000005855 radiation Effects 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 12
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- 238000011160 research Methods 0.000 description 3
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- 238000004804 winding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
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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
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Abstract
The invention discloses a kind of ultra wideband dual polarization antennas, including a metab and one or four arm Sinuous helical antennas；The metab is in cone, inner hollow and both ends open；The four arms Sinuous helical antenna is in cone compatible with the conical curved surface of the inner surface of the metab；The four arms Sinuous helical antenna is attached at the inner surface of the metab.The present invention also provides a kind of production methods of ultra wideband dual polarization antenna.By above embodiment, the size that radiating aperture can not only be made full use of, reduce antenna, additionally it is possible to increase the low elevation radiation of antenna, i.e. raising 3dB lobe width.
Description
Technical field
The present invention relates to communication antenna technical fields more particularly to a kind of ultra wideband dual polarization antenna and preparation method thereof.
Background technique
In microwave communication and radar-probing system, antenna carries the transmitting and received task of electromagnetic wave.Signal hair
When penetrating, guided wave is changed into spatial electromagnetic wave and is directed toward specific direction by antenna；When signal receives, antenna is by spatial electromagnetic wave
It is changed into frequency electromagnetic waves and is transferred to radio-frequency transmitter.In recent years, with the continuous development of communication system and microelectronic component
Technical matters improves, and emerges Ultra-wideband Communication Technology and device technology manufacturing method, compared with conventional communication techniques, ultra wide band
Antenna technology has the bandwidth of GHz magnitude, and as a kind of completely new antenna form, ultra-wideband antenna technology is had the advantage that
1) since ultra-wideband antenna technology uses hop-time spread spectrum signal, when transmitting, unlimited electric impulse signal dispersed in wider array of frequency band
It propagates, relative to the noise that conventional equipment generates, output power is lower, in the energy reduction process when receiving, passes through despreading
It can produce spreading gain, this will bring bigger processing gain to system；2) under conditions of same bit rate, using ultra-wide
Band antenna technology will bring stronger interference free performance to system；3) ultra-wideband communications are due to occupying very wide frequency band, have compared with
High transmission rate can achieve several hundred to thousands of Mbps；4) ultra-wideband communications are not due to consuming the biggish carrier wave of power, only
It is to send transient pulse electric wave when needed, therefore the electric energy consumed is smaller with respect to conventional communication mode, not only extends system
The working time of power supply decreases the influence to human body；5) ultra-wideband communications have better confidentiality.
Ultra-wideband antenna is widely used in now in the fields such as electromagnetic measurement, electromagnetic compatibility test, ULTRA-WIDEBAND RADAR.It is led
Want way of realization to have: 1) ridged horn, electromagnetic horn have bandwidth band, good directionality, the ability of high-gain and high power load
The advantages that；2) Vivaldi antenna has the advantages that low section；3) self complementray antenna since irradiation structure is self-complementary there is non-frequency to become special
Point.Transmission duplex mode can be achieved at the same time in dual polarized antenna in the field of communications, and then can reduce directional base station work antenna
Quantity, the switching times to different polarization direction antennas can be reduced in certain testing fields, can be real in mobile communication application
Existing polarity diversity and channeling, the polarization isolation that transmitting-receiving may be implemented in satellite communication, can be in the direction-finding system of broadband
Two mutually orthogonal polarized waves are provided.It can be seen that ultra wideband dual polarization antenna suffers from very big development potentiality in many fields.
The research of document 1(Chen Zhenhua's super wide band plane sine antenna and design Nanjing Aero-Space University master learn
Degree thesis whole-length, 2009.) the conventional two-arm plane sine antenna for having developed 3~15GHz, using miniaturization exponential fade micro-strip feedback
Electric balun realizes feed, has the advantages that ultra wide band, complete polarization ability, single aperture.A kind of double entelechies of document 2(Wang Han, Hu Xing
Change the design and emulation space electronic technology of plane sinuous line, 2017(5): 76-78.) devise a kind of plane
Sinuous antenna, antenna are mainly made of multistage archimedes curve, and there are four feed ports for tool, and cooperation feeding network can
To realize good double-circle polarization characteristic, axis ratio reaches 3dB or less in design frequency band, directional diagram out-of-roundness is less than 0.5dB.
Antenna has planar structure and can be realized double-circle polarization, is reduced in size area by winding mode.Document Shao 3(
Yun Qing ultra-wideband antenna Miniaturization Research South China Science & Engineering University master thesis, 2015.) describe a kind of broad-band antenna
The design method for minimizing Sinuous antenna reduces antenna using modes such as coated by dielectric, reactance loaded antenna, increase current paths
Swept area, reduce Sinuous antenna size.Use the diameter of the Sinuous antenna of load loop coupling for 44mm, ring coupling
Conjunction makes the coefficient of reduction of antenna reach 1.36,10dB return loss bandwidth covering, 2.45~18.7GHz.Document Lee's 4(name determines
The research Xian Electronics Science and Technology University master thesis of wide beam circular polarized antenna, 2008.) have studied broad beam circular polarisation
The design method of antenna proposes the design scheme of multifrequency antenna, is being based on 2-18GHz antenna, introduces double floors, Gao Jie electricity
The measures such as constant substrate and medium extended structure, realize the optimization of antenna radiation characteristics.
Above-mentioned ultra wide band circular polarized antenna has the drawback that
If microstrip antenna realizes that broadband character needs to introduce multilayer dielectricity either air layer, lead to antenna volume increase and structure
It is not compact；
It broadens the beamwidth of antenna or covers more than two working bands, need to introduce multimode using measures such as capacitor and shorting pins
Operating mode increases the design and difficulty of processing of antenna；
Quickly, 3dB lobe width is insufficient for the low elevation direction gain decline of plane microstrip antenna.
Summary of the invention
The present invention provides a kind of ultra wideband dual polarization antenna and preparation method thereof to solve above-mentioned technical problem, can not only
The size for making full use of radiating aperture, reducing antenna, additionally it is possible to increase the low elevation radiation of antenna, i.e. raising 3dB lobe width.
In order to solve the above technical problems, the present invention provides a kind of ultra wideband dual polarization antenna, comprising: metab and one
Four arm Sinuous helical antennas；The metab is in cone, inner hollow and both ends open；The four arms Sinuous
Helical antenna is bent into bottom surface structure compatible with the conical curved surface of the inner surface of the metab；Four arm
Sinuous helical antenna is attached at the inner surface of the metab.
Further, the four arms Sinuous helical antenna includes four identical Sinuous antenna elements, each described
The bottom surface of Sinuous antenna element is adapted with the conical curved surface of the inner surface of the metab, along the metal bottom
The circumferencial direction of seat, each Sinuous antenna element direction is consistent and is angularly attached at the interior table of the metab
Face.
Further, the Sinuous antenna element include multistage be sinusoidal radiation arm, each radiation arm with
Certain angle turns back back and forth alternately links into an integrated entity and constitutes non-occluded configuration, and the opening of described metab one end is first
Opening, the opening of the other end are the second opening, and the radius of second opening is greater than the radius of first opening, from described the
One is open the direction to second opening, and the length of the radiation arm in the Sinuous antenna element becomes larger.
Further, in the Sinuous antenna element, the sine curve of each radiation arm shape according to the following formula
At:
Wherein,R n It isnThe radius of section curve,r n =R n+1 /R n , αnIt isnThe angular span of section curve, φ and r are polar coordinate system
Coordinate.
Further, the angular span quilt in the Sinuous antenna element, between each two neighboring radiation arm
22.5 ° are set as, so that the Sinuous antenna element is formed as self-complementary figure.
Further, each adjacent Sinuous antenna element carries out grafting nesting using the characteristic of self-complementary figure.
Further, the four arms Sinuous helical antenna includes the first feeding point along the circumferential direction set gradually,
Two feeding points, third feeding point and the 4th feeding point, the ultra wideband dual polarization antenna further include a feeding network；The feedback
Electric network includes two 90 ° of electric bridges for being defined as the first electric bridge and the second electric bridge and the first balun and the second balun；It is described
First feeding point, second feeding point are electrically connected with the first input end of first electric bridge, the second input terminal respectively, described
Third feeding point, the 4th feeding point are electrically connected with the first input end of second electric bridge, the second input terminal respectively；It is described
First output end of the first electric bridge, second output terminal respectively with the first input end of first balun, second balun
First input end electrical connection, the first output end of second electric bridge, second output terminal respectively with first balun second
The second input terminal electrical connection of input terminal, second balun；And the first output end of first balun and the first feed are defeated
Outlet electrical connection, second output terminal ground connection, the first output end of second balun is grounded, second output terminal and the second feed are defeated
Outlet electrical connection.
In order to solve the above technical problems, the present invention also provides a kind of production methods of ultra wideband dual polarization antenna, including such as
Lower step: prepare metab, the metab is with hollow inside and both ends have opening；Make four arm Sinuous
Helical antenna, the four arms Sinuous helical antenna are in circular cone compatible with the conical curved surface of the inner surface of metab
Shape；The four arms Sinuous helical antenna is installed on to the inner surface of the metab.
Further, among the four arm Sinuous helical antenna of the production the step of, specifically: on microwave plate
The antenna domain of the four arms Sinuous helical antenna is made by planar circuit board technique, and the antenna domain is cut
It is curved it after cutting as cone compatible with the conical surface of the metab.
Further, the step of the four arms Sinuous helical antenna is installed on the inner surface of the metab
Among, specifically: the four arms Sinuous helical antenna is set to the inner surface of the metab by adhesion process.
Ultra wideband dual polarization antenna of the invention and preparation method thereof, has the following beneficial effects:
By using the metab of cone and in four arm Sinuous spiral days of metab inner surface setting cone
Line realizes Sinuous antenna element using multistage sine curve and by that can not only make full use of spoke by the way of winding
Perforation diameter, the size for reducing antenna, additionally it is possible to increase the low elevation radiation of antenna, i.e. raising 3dB lobe width；
And the feeding network by design including two 90 ° of electric bridges and two baluns, and exported by dual-port, it can be achieved at the same time
The double-circle polarization of the dual polarized antenna is realized in left-hand circular polarization and right-handed circular polarization.
Detailed description of the invention
Fig. 1 is the top view of the package assembly of ultra wideband dual polarization antenna of the present invention.
Fig. 2 is the side perspective of ultra wideband dual polarization antenna shown in FIG. 1.
Fig. 3 is the three-dimensional structure diagram of four arm Sinuous helical antennas in ultra wideband dual polarization antenna shown in Fig. 2.
Fig. 4 is the plan view from above of four arms Sinuous helical antenna shown in Fig. 2.
Fig. 5 is the planar structure schematic diagram of four Sinuous antenna elements in four arm Sinuous helical antennas shown in Fig. 3.
Fig. 6 is the antenna domain of production four arm Sinuous helical antennas as shown in Figure 3.
Fig. 7 is the top view of metab in ultra wideband dual polarization antenna shown in FIG. 1.
Fig. 8 is the side view of metab in ultra wideband dual polarization antenna shown in FIG. 1.
Fig. 9 is the circuit diagram of feeding network in ultra wideband dual polarization antenna shown in FIG. 1.
Figure 10 is the reflection loss schematic diagram of ultra wideband dual polarization antenna shown in Fig. 1.
Figure 11 is gain schematic diagram of ultra wideband dual polarization antenna shown in Fig. 1 in frequency 1.5GHz.
Figure 12 is that axis of ultra wideband dual polarization antenna shown in Fig. 1 in frequency 1.5GHz compares schematic diagram.
Figure 13 is the flow chart of the production method of ultra wideband dual polarization antenna of the present invention.
Specific embodiment
The present invention is described in detail with embodiment with reference to the accompanying drawing.
The present invention provides a kind of ultra wideband dual polarization antenna.It carries out in conjunction with Fig. 1 to Fig. 8 refering to the ultra wideband dual polarization day
Line includes a metab 20 and one or four arm Sinuous helical antennas 10.
The metab 20 is conical structure, and with hollow inside and both ends have opening, is equivalent to frustum of a cone
Shape structure.The four arms Sinuous helical antenna 10 is in circular cone compatible with the conical curved surface of the inner surface of metab 20
Shape, and the four arms Sinuous helical antenna 10 is attached at the inner surface of metab 20 and is equivalent to for ease of understanding by four
Arm Sinuous helical antenna 10 is snugly installed in the inner surface of metab 20 in a manner of upright projection.
Specifically, the four arms Sinuous helical antenna 10 include four identical Sinuous antenna elements 11,12,
13,14 namely the structure snd size having the same of four Sinuous antenna elements 11~14.Wherein, each Sinuous days
Line unit 11~14 is all made of conical curved surface distribution, is adapted with the conical curved surface of the inner surface of metab 20.Edge
The circumferencial direction of metab 20, each Sinuous antenna element 11~14 is towards consistent and be angularly attached at metal bottom
The inner surface of seat 20.It can be regarded as a Sinuous antenna element 11 by Cheng Gongsi parts of swivel replication of 90 ° of angle and then in addition
Sinuous antenna element 12,13,14 is formd, and then forms the four arms Sinuous helical antenna 10.
Metab 20 by using cone and the four arm Sinuous in 20 inner surface of metab setting cone
Helical antenna 10, the size that radiating aperture can not only be made full use of, reduce antenna, additionally it is possible to increase the low elevation angle spoke of antenna
It penetrates, i.e. raising 3dB lobe width.
In one embodiment, specifically by taking one of Sinuous antenna element such as Sinuous antenna element 11 as an example
It is illustrated.The Sinuous antenna element 11 includes that multistage is sinusoidal radiation arm 110.Wherein, each radiation arm 110 with
Certain angle turns back alternately linking integrally back and forth and constitutes non-occluded configuration, namely except first segment radiation arm 110 and finally
One section of respective one end of radiation arm 110 is not connected with except other radiation arms 110, and the both ends of remaining radiation arm 110 are respectively connected with other
Radiation arm 110.For example, which can be designed as 12 radiation arms 110,12 radiation arms
110 length gradual changes, shortest radiation arm 110 is corresponding to have highest working frequency, and longest radiation arm 110 is corresponding with most
Low working frequency.Wherein, by increasing by 110 length of radiation arm, the low frequency operating frequency of antenna can be expanded.In general, can be with
By the neighbouring edge for being set to the lesser opening of radius in metab 20 of shortest radiation arm 110, and by longest radiation
The neighbouring edge for being set to the biggish opening of radius in metab 20 of arm 110, further to reduce the volume of antenna.
Further, as shown in fig. 7, the opening of 20 one end of metab is defined as the first opening 21, the opening of the other end
It is defined as the second opening 22, the radius of the second opening 22 is greater than the radius of the first opening 21.Wherein, from the first opening 21 to second
The length in the direction of opening 22, the radiation arm 110 in Sinuous antenna element 11 becomes larger.More specifically, same
In Sinuous antenna element 11, the sine curve of each radiation arm 110 is formed according to the following formula:
Wherein,R n It isnThe radius of section curve,r n =R n+1 /R n , αnIt isnThe angular span of section curve, φ and r are polar coordinate system
Coordinate.
In a preferred embodiment, to make Sinuous antenna element 11 be formed as self-complementary figure, by each two neighboring radiation
Angular span between arm 110 is disposed as 22.5 °.With following when the Sinuous antenna element 11 constitutes self-complementary figure
Characteristic, i.e. in every group of radiation arm 110, the linking part of two neighboring radiation arm 110 is at least partly inserted into being nested in by this
The gap section (not indicating) that two radiation arms 110 are constituted, it is possible to understand that, it is more than two identical when having
When Sinuous antenna element such as 11~14, when by each Sinuous antenna element 11~14 in a circumferential direction towards identical row
When column, two neighboring Sinuous antenna element can mutually plug nesting.The four arms Sinuous helical antenna 10,
Gap section in Sinuous antenna element 11~14 between each radiation arm 110 and its corresponding two radiation arm 110 is self complementary graph
Shape is essentially frequency-independent antenna, has wider bandwidth.
In a further preferred embodiment, in a circumferential direction towards each Sinuous antenna element of identical setting specifically such as
In 11~14, each adjacent S inuous antenna element 11~14 is carried out using the characteristic of self-complementary figure mutually nested.Preferably,
In order to improve the isolation between each Sinuous antenna element 11~14, when nested, different Sinuous antenna elements 11~14
Between the ground grafting that is not in contact with each other of the needs of radiation arm 110 it is nested.In this way, it is nested by non-contiguously grafting, it can both guarantee this
The electrical characteristic of dual polarized antenna, and can greatly reduce the volume of the dual polarized antenna, facilitate the reality of ultra-small antenna
It is existing.
According to the basic constructional design of above-mentioned ultra wideband dual polarization antenna, a feeding network can be designed, to realize this pair
The linear dual polarization (i.e. horizontal polarization and vertical polarization) of poliarizing antenna.
And the present invention more designs another feeding network, to realize double-circle polarization (the i.e. left-handed entelechy of the dual polarized antenna
Change and right-handed circular polarization).Specifically, carrying out in conjunction with Fig. 5 and Fig. 9 refering to four in the four arms Sinuous helical antenna 10
Sinuous antenna element 11~14 is provided with a feeding point at the starting point of the shortest radiation arm 110 of length, and this four
Feeding point A1~A4 is along the circumferential direction set gradually, corresponding, which includes two 90 ° of electric bridges, is determined respectively
Justice is the first electric bridge 31 and the second electric bridge 32；And two baluns, it is respectively defined as the first balun 33 and the second balun 34.
Wherein, feeding point A1 is electrically connected with the first input end of the first electric bridge 31, and the of feeding point A2 and the first electric bridge 31
The electrical connection of two input terminals, feeding point A3 is electrically connected with the first input end of the second electric bridge 32, feeding point A4 and the second electric bridge 32
The electrical connection of second input terminal.
Further, the first output end of the first electric bridge 31 is electrically connected with the first input end of the first balun 33, the first electricity
The second output terminal of bridge 31 is electrically connected with the first input end of the second balun 34；First output end of the second electric bridge 32 and first bar
Second input terminal of human relations 33 is electrically connected, and the second output terminal of the second electric bridge 32 is electrically connected with the second input terminal of the second balun 34.
Further, the first feed of the first output end electrical connection output end P1 of the first balun 33, the of the first balun 33
Two output ends ground connection；First output end of the second balun 34 is grounded, the second feed of second output terminal electrical connection of the second balun 34
Output end P2.
Pass through above-mentioned feeding network, four Sinuous 11~14(of antenna element Fig. 4 of four arm Sinuous helical antennas 10
In by Sinuous antenna element 11,12,13,14 clockwise direction) current feed phase be respectively 0 °, 90 °, 180 °, 270 ° when,
Left-hand circular polarization wave can be generated；And (clockwise direction of Sinuous antenna element 11,12,13,14 is pressed in Fig. 4) feed phase
When position is respectively 0 °, -90 °, -180 °, -270 °, right-handed circular polarization wave can be generated.Use two 90 ° of electric bridges 31,32 and two
Double-circle polarization can be thus achieved in a balun 33,34.
Four feeding point leads are electrically connected to inside the metab 20 of cone, connect above-mentioned feeding network, most
End form is at two feed output end P1, P2(, that is, left-hand circular polarization ports and right-handed circular polarization port).
In above-described embodiment, four arm Sinuous helical antennas 10 are made using microwave plate 17, for example, can
It is made with using with a thickness of the TLY-5 microwave plate of 0.762mm.
The port parameter test result of the dual polarized antenna is as shown in Fig. 6, radiation of the antenna in lower-frequency limit 1.5GHz
As shown in figs. 10-12, specifically, as shown in Figure 10, antenna echo reflection in working frequency range is less than -10dB to characteristic；Such as figure
Shown in 11, antenna is greater than -6dB in frequency low side gain, and half beam width is up to 140 degree；As shown in figure 12, antenna is in half-wave beamwidth
It spends inner shaft ratio and is less than 3dB.Wherein, antenna overall dimensions are bullet base diameter 30mm, bullet diameter of bore 13mm, height
12mm；Overall dimensions are about the 1/7 of lowest operating frequency (i.e. 1.5GHz) corresponding wavelength, belong to ultra-small antenna.
According to the design principle and structure of above-mentioned ultra wideband dual polarization antenna, frequency range covering 1.5GHz-8GHz may be implemented
Ultra wide band dual circularly polarized antenna, can be widely applied for the fields such as ultra-wideband communications, radar detection, direction-finding station.
The present invention provides a kind of production method of ultra wideband dual polarization antenna.As shown in figure 13, which includes such as
Lower step:
Step S1 prepares metab.
Wherein, the metab is with hollow inside and both ends have opening.
Step S2 makes four arm Sinuous helical antennas.
Wherein, which is in circle compatible with the conical curved surface of the inner surface of metab
Taper.
Four arm Sinuous helical antennas are installed on the inner surface of metab by step S3.
Wherein, four arm Sinuous helical antennas can usually be attached at the inner surface of metab by adhesion process.
In one embodiment, specifically in step S2, that is, in the step of making four arm Sinuous helical antennas, specifically
Four arm can be made by using planar circuit board technique (including printed wiring 16, circuit etching 16 etc. on microwave plate 17)
The antenna domain of Sinuous helical antenna, and curve it after being cut to the antenna domain as the circular cone with metab
The compatible cone of curved surface.
Ultra wideband dual polarization antenna of the invention and preparation method thereof, has the following beneficial effects:
Four arm Sinuous spiral shells of the metab 20 by using cone and the inner surface setting cone in metab 20
Antenna 10 is revolved, Sinuous antenna element 11~14 is realized using multistage sine curve and by by the way of winding, it can not only
The size for enough making full use of radiating aperture, reducing antenna, additionally it is possible to increase the low elevation radiation of antenna, i.e. raising 3dB lobe is wide
Degree；
And the feeding network by design including two 90 ° of electric bridges 31,32 and two baluns 33,34, and pass through dual-port P1, P2
Output, can be achieved at the same time left-hand circular polarization and right-handed circular polarization, that is, realizes the double-circle polarization of the dual polarized antenna.
The above is only embodiments of the present invention, are not intended to limit the scope of the invention, all to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (10)
1. a kind of ultra wideband dual polarization antenna characterized by comprising
One metab and one or four arm Sinuous helical antennas；
The metab is in cone, inner hollow and both ends open；
The four arms Sinuous helical antenna is in circular cone compatible with the conical curved surface of the inner surface of the metab
Shape；The four arms Sinuous helical antenna is attached at the inner surface of the metab.
2. ultra wideband dual polarization antenna according to claim 1, it is characterised in that:
The four arms Sinuous helical antenna includes four identical Sinuous antenna elements, each Sinuous antenna list
The bottom surface of member is adapted with the conical curved surface of the inner surface of the metab, along the circumferencial direction of the metab,
Each Sinuous antenna element direction is consistent and is angularly attached at the inner surface of the metab.
3. ultra wideband dual polarization antenna according to claim 2, it is characterised in that:
The Sinuous antenna element includes that multistage is sinusoidal radiation arm, and each radiation arm is round-trip at a certain angle
Fold-back alternately links into an integrated entity and constitutes non-occluded configuration, and the opening of described metab one end is the first opening, the other end
Opening be second opening, it is described second opening radius be greater than it is described first opening radius, be open from described first to institute
The direction of the second opening is stated, the length of the radiation arm in the Sinuous antenna element becomes larger.
4. ultra wideband dual polarization antenna according to claim 3, it is characterised in that:
In the Sinuous antenna element, the sine curve of each radiation arm is formed according to the following formula:
Wherein,R n It isnThe radius of section curve,r n =R n+1 /R n , αnIt isnThe angular span of section curve, φ and r are polar coordinate system
Coordinate.
5. ultra wideband dual polarization antenna according to claim 4, it is characterised in that:
In the Sinuous antenna element, the angular span between each two neighboring radiation arm is all set to 22.5 °,
So that the Sinuous antenna element is formed as self-complementary figure.
6. ultra wideband dual polarization antenna according to claim 5, it is characterised in that:
Each adjacent Sinuous antenna element carries out grafting nesting using the characteristic of self-complementary figure.
7. ultra wideband dual polarization antenna according to claim 3, it is characterised in that:
The four arms Sinuous helical antenna includes the first feeding point along the circumferential direction set gradually, the second feeding point, third
Feeding point and the 4th feeding point, the ultra wideband dual polarization antenna further include a feeding network；
The feeding network includes two 90 ° of electric bridges for being defined as the first electric bridge and the second electric bridge and the first balun and
Two baluns；
First feeding point, second feeding point are electric with the first input end of first electric bridge, the second input terminal respectively
Connection, the third feeding point, the 4th feeding point are electric with the first input end of second electric bridge, the second input terminal respectively
Connection；First output end of first electric bridge, second output terminal respectively with the first input end of first balun, described
The first input ends of two baluns is electrically connected, the first output end of second electric bridge, second output terminal respectively with described first bar
The second input terminal electrical connection of second input terminal of human relations, second balun；And the first output end of first balun and
One feed output end electrical connection, second output terminal ground connection, the first output end ground connection of second balun, second output terminal and the
Two feed output end electrical connections.
8. a kind of production method of ultra wideband dual polarization antenna, which comprises the steps of:
Prepare metab, the metab is with hollow inside and both ends have opening；
Four arm Sinuous helical antennas are made, the four arms Sinuous helical antenna is in the circular cone with the inner surface of metab
The compatible cone of shape curved surface；
The four arms Sinuous helical antenna is installed on to the inner surface of the metab.
9. the production method of ultra wideband dual polarization antenna according to claim 8, which is characterized in that in four arms of the production
Among the step of Sinuous helical antenna, specifically:
The antenna domain of the four arms Sinuous helical antenna is made by planar circuit board technique on microwave plate, and right
The antenna domain is curved it after being cut as cone compatible with the conical surface of the metab.
10. the production method of ultra wideband dual polarization antenna according to claim 8, which is characterized in that by four arm
Sinuous helical antenna was installed among the step of inner surface of the metab, specifically:
The four arms Sinuous helical antenna is set to the inner surface of the metab by adhesion process.
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