CN206271891U - Mirror antenna array - Google Patents
Mirror antenna array Download PDFInfo
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- CN206271891U CN206271891U CN201621299468.6U CN201621299468U CN206271891U CN 206271891 U CN206271891 U CN 206271891U CN 201621299468 U CN201621299468 U CN 201621299468U CN 206271891 U CN206271891 U CN 206271891U
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- meta materials
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- materials surface
- driving source
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Abstract
The utility model discloses a kind of mirror antenna array, including driving source, programmable substrate, Meta Materials surface and metallic support；The driving source, programmable substrate and Meta Materials surface are fixed on the metallic support；The Meta Materials surface includes several active antenna elements, and the active antenna element includes metamaterial unit and the active diode being connected between metamaterial unit.The utility model can quickly design corresponding " 0 " and " 1 " coding arrangement, and corresponding active diode is quickly controlled by programmable substrate, control beam-scanning angles and radiation beam.Compared with traditional structure, it is not necessary to which mechanical rotation antenna structure is to be capable of achieving to need the radiation beam of orientation angles, overall volume to reduce, and increases flexibility.
Description
Technical field
The utility model belongs to communication technical field, especially a kind of mirror antenna array.
Background technology
Radar antenna is to be used to radiate and receive electromagnetic wave in radar and determine the visual plant of its detection direction, radar
Important tactical qualities, such as detection range, investigative range, search angle (orientation, pitching) precision, angular resolution and counter-measure energy
Power etc., it is relevant with radar antenna performance.
To realize detection and tracking of the radar to target, general radar antenna is needed with beam scanning capabilities, by it
Scan mode, can be divided into mechanical scanning antennas, electronic scanning antenna and the electromechanical class of scanning antenna three by radar antenna.Mechanical scanning
It is parabola antenna and lens antenna that antenna is used more, has the advantages that secondary lobe and back lobe level is small, directionality is good, therefore
Obtain important in fields such as Aeronautics and Astronautics, satellite communication, mobile communication and be widely applied.But due to traditional parabola day
The problems such as line and lens antenna have that volume is big, weight is high, installation is complicated, are not easy to integrated, airborne radar, spaceborne radar and
Missile-borne radar etc. is difficult to be applied in having volume and quality the system of rigors.The phased-array radar day of current main flow
Electron scanning mode is employed in line, each radar antenna unit connects a phase shifter in this antenna, and all of
Phase shifter by computer controls, so as to realize the beam scanning of antenna.But the T/R component prices such as phase shifter in phased array antenna
It is expensive.
Reflector antenna has the advantages that high-gain, Sidelobe, main lobe are narrow, can form high-gain and require shape ripple
While beam, feed is simple, design comparison is easy, cost is relatively low, can meet the requirement of various conventional radar systems.Reflecting surface day
Line is one of principal mode of satellite communication ground based terminal station antenna, is had at the aspect such as distance radio communication and high resolution radar
Extensive use.Reflector antenna is made up of a reflecting surface and a feed antennas, the scattering by reflecting surface to electromagnetic wave
Effect forms desired antenna pattern.
But the volume of existing mirror antenna array is also than larger, the shortcomings of wave beam adjusting function is not comprehensive enough.
Utility model content
In order to solve the above mentioned problem of prior art presence, there is provided a kind of mirror antenna array.
Specifically scheme is：A kind of mirror antenna array, including driving source, programmable substrate, Meta Materials surface and gold
Category support；The driving source, programmable substrate and Meta Materials surface are fixed on the metallic support；The Meta Materials surface includes
Several active antenna elements, the active antenna element includes metamaterial unit and be connected between metamaterial unit active two
Pole pipe.
In a further embodiment, when the status park of active diode is different, " 0 ", " 1 " shape on Meta Materials surface
State distribution is different；And then plane wave is reflected to form into required radiation beam.The driving source is conical horn, the circular cone
Vertex angle theta=the 2arctan (a/2L) of loudspeaker, wherein a are bell mouth surface diameter, and L is loudspeaker radiation length.The conical horn turns
Dynamic to be connected on metallic support, the rotational angle of conical horn is 0-60 °.
Compared with prior art, the technical solution of the utility model has the advantages that：
(1), the active metamaterial unit of the utility model design is realized by the break-make of active diode and controls it not
The working condition " 0 " of same-phase and " 1 ", inverse algorithm is encoded according to electromagnetism, and the difference of radiation beam is required by radar system,
Corresponding " 0 " and " 1 " coding arrangement can be quickly designed, corresponding active diode is quickly controlled by programmable substrate, controlled
Beam-scanning angles processed and radiation beam.Compared with traditional parabola radar antenna, can directly carry out it is digital control, without complexity
Expensive phase shifter and ad/da converter, realizes more fully wave beam adjusting function, can not only carry out beam scanning, also
High-gain simple beam, dualbeam and controllable multi-beam can be produced, and can flexibly be switched.
(2), the utility model driving voltage and low in energy consumption, simple structure.Programmable substrate can be carried out by 5V voltages
Drive, and the operating current of single active diode is very low (5.2mA), and whole control panel and active Meta Materials surface power disappear
Consumption is low.Overall structure using excitation loudspeaker source, Meta Materials surface and programmable substrate composition can 0 ° -70 ° of generation it is comprehensive
Scanning beam, compared with traditional structure, it is not necessary to which mechanical rotation antenna structure is to be capable of achieving to need the radiation beam of orientation angles,
Overall volume reduces, and increases flexibility.
(3), the utility model reflecting surface and excitation loudspeaker source are integrated on metallic support, by adjusting loudspeaker source with reflection
The orientation in face achieves that optimal reflected beam, is adaptable to different excitation loudspeaker and reflectings surface, with flexible regulation
Property.
Brief description of the drawings
Fig. 1 a are schematic diagram of the present utility model；Fig. 1 b are structural representation of the present utility model.
Fig. 2 a, Fig. 2 b and Fig. 2 c are respectively front view, rearview and the side view of active antenna element of the present utility model.
Fig. 3 is the structure chart in excitation loudspeaker source of the present utility model.
Fig. 4 a and Fig. 4 b are the side view and top view of antenna holder of the present utility model.
Fig. 5 is programmable substrate theory diagram of the present utility model.
Fig. 6 a and Fig. 6 b are respectively the simple beam antenna pattern that the utility model is tested in 10GHz Frequency points.
Fig. 7 a and Fig. 7 b are the dualbeam antenna pattern that the utility model is tested in 10GHz Frequency points.
Fig. 8 is workflow diagram of the present utility model.
Specific embodiment
Applicant thinks after research：Traditional reflector antenna realizes desired spoke by designing the shape of reflecting surface
Direction is penetrated, the structure and performance of reflecting surface have just been fixed, it is impossible to carry out real-time control to antenna according to actual needs.It is programmable
Reflector antenna has the advantages that traditional parabolic reflector antenna and phased array antenna, by the microstrip reflection for adjusting two-dimensional structure
The unit arrangement of antenna, can realize that single wave beam or multiple wave beams work simultaneously, and cover the spatial domain of given shape, in satellite
The technical field such as communication and electronic countermeasure obtains extensive use.Microstrip reflection antenna is improve satellite communication system performance one
Guardian technique, is also a kind of important means that a large amount of targets are sorted in Modern Electronic Countermeasure.Described in detail below practicality is new
The technical scheme and case study on implementation of type.
In the embodiment shown in Fig. 1 a to Fig. 7, the mirror antenna array mainly includes loudspeaker driving source 1, Meta Materials
Surface 5 and programmable substrate 4；Active antenna element 6 is made up of active diode device 2 and metamaterial unit 3；" 0 ", " 1 " surpass
Material surface is made up of n × n active antenna element array；Programmable substrate is connected by slot with Meta Materials surface, is led to
Cross downloading wire and coded sequence is written to programmable substrate；The loudspeaker driving source, programmable substrate and " 0 ", " 1 " Meta Materials table
Face is fixed on metallic support；Driving source is fixed on one end of metallic support, and Meta Materials surface and programmable substrate are fixed on gold
Belong to the other end of support.
Loudspeaker driving source is used as signal driving source, plane of departure ripple to " 0 ", " 1 " Meta Materials surface, the plane wave of its transmitting
Area is approximate with Meta Materials surface size, maximum by plane wave reflection, forms high-gain, the preferable reflected beam of directionality,
By adjust the position and azimuth of loudspeaker driving source be capable of achieving to launch different size of reflection plate antenna carry out it is appropriate
Excitation." 0 ", " 1 " Meta Materials surface are distributed by controlling the break-make of active diode device to change " 0 " on surface, one state,
The plane wave of loudspeaker driving source is reflected to form into required radiation beam.Programmable substrate is according to the requirement of radar beam by spy
Fixed " 0 ", " 1 " coding distribution is write by FPGA control panels, the break-make of active diode device is controlled, by plane wave reflection
Into specific radiation beam.
Loudspeaker driving source can provide plane wave excitation, it is ensured that all of active antenna element is received on Meta Materials surface
Plane wave phase amplitude is identical.The adjustable excitation loudspeaker source of metallic support 7 and the distance and bearing on Meta Materials surface, realize each
Active metamaterial unit all may act on reflected beam, reach optimal reflecting effect.
In above-mentioned mirror antenna array, " 0 " and " 1 " working condition of the active antenna element has by control
The break-make of source diode device realizes that the phase under two kinds of different working conditions in its operating frequency range differs 180 °, structure
1bit into 0 and 1 encodes metamaterial unit.
As Fig. 2 a to Fig. 2 c show active antenna element structure, connected respectively by two through holes in the radiation patch on surface
Ground connection and positive source, power to active diode device 2, greatly simplify the power supply of whole system.
Wherein, parameter l1, l2 can change the working frequency point of unit in structure；W2 is the length of active diode device；
According to the break-make of active diode device 2, phase difference in the case of available two kinds are optimized to parameter s1, s2 and w1
180 °, then thus unit can design unit corresponding in X-band each frequency.
The directionality that all of unit is formed on " 0 ", " 1 " Meta Materials surface is indicated by formula (1), wherein, θ andThe respectively angle of pitch of radiation beam and azimuth；It is the Far-field scattering of metamaterial unit 3；K is free space
Wave number；D is the width of unit；The phase of each unit isUsually 0 ° or 180 °.So can just be calculated anti-
The directional diagram that the formula antenna of penetrating is formed.
Programmable substrate realized by FPGA control panels, have the advantages that low cost, be easily integrated, stability it is high, according to
The demand of radar emission wave beam, the coding on " 0 ", " 1 " the Meta Materials surface being calculated by electromagnetism algorithm for inversion is write by downloading wire
Enter in the control module of FPGA, to ensure that FPGA has enough load capacities, by rectification module rectification, make it have foot
Enough driving currents, so as to control the both end voltage of active diode device, reach and realize to the control of each diode break-make
Purpose, so as to constitute two kinds of different working conditions that phase difference is 180 °.
As shown in Fig. 2 a to Fig. 2 c, using conical horn, design is in the transmitting of 10GHz frequencies for the structural parameters in excitation loudspeaker source
Plane wave.Can determine that circular cone drift angle size θ=2arctan (a/2L), wherein a are loudspeaker by phase margin (δ not should be greater than 0.3 λ 2)
Mouth face diameter, L is loudspeaker radiation length.Conical horn other specification can determine that according to center frequency point, realize that loudspeaker excitation is defeated
Go out plane wave effect.
As shown in figures 4 a and 4b, reflecting plate is fixed on support one end to antenna holder structure, and loudspeaker driving source 1 is another in support
One end, the position of driving source and the angle of pitch are variable.Distance apart from reflecting plate is adjustable in scope 120mm~320mm, and height becomes
Change scope is 100mm~300mm, and loudspeaker can rotate in 0-60 ° of angle, with controllability higher.
As shown in figure 8, the course of work of the present utility model is：Plane wave to " 0 ", " 1 " is sent by loudspeaker driving source first
The characteristic of electromagnetic wave is realized manipulating in Meta Materials surface, the Meta Materials surface according to different working condition, will by programmable substrate
The different coding sequence statement for calculating realizes the control and scanning of different electromagnetic beams to " 0 ", " 1 " Meta Materials surface,
The radiation beams such as simple beam, dualbeam and four wave beams can be formed.
With reference to the reflective programmable antenna array of the utility model method, it is made up of 20 × 20 active antenna elements,
The overall size 200 × 200 × 1.8 (mm) of reflecting plate, working frequency range is 9.7-10.2GHz, is write coded sequence by PC
To in programmable substrate (FPGA), realize controlling Meta Materials surface " 0 ", " 1 " to be distributed by the break-make of active diode device, it is real
Beam scanning control is showed and simple beam, dualbeam and multi-beam has been switched fast.
Fig. 6 a and Fig. 6 b, Fig. 7 a and Fig. 7 b are respectively the simple beam that example of the present utility model is tested in 10GHz Frequency points
With dualbeam directional diagram.According to radar beam direction demand, by electromagnetism inverse calculation, required for quick design excess of export surface
20 × 20 each unit coded sequence, by PC ends pass through corresponding FPGA control panels write specific direction angle coding journey
Sequence, by 0 ° of simple beam, 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, the 70 ° chip of coded sequence distribution write-in FPGA substrates.
Test the simple beam performance (gain and directional diagram) of whole mirror antenna.Change the coding arrangement on Meta Materials surface, excitation
After the plane wave in loudspeaker source is reflected by super surface, accurate high-gain, the radiation beam of low sidelobe are generated, reached controls ripple
The function of beam scanning, meets requirement of the radar system to antenna difference radiation beam.Write-in coding is scanned through to multi-beam
Sequence pair angle of radiation is -45 °, 30 ° of dualbeam radiation is tested, and as a result shows to be produced in respective angles corresponding
Wave beam, the radiation of manipulation electromagnetic beam is realized by the coding for changing super surface, realizes Protean beam scanning function.
In a word, the utility model discloses a kind of mirror antenna array, the mirror antenna array includes multiple active
Antenna element, programmable substrate, driving source electromagnetic horn and metallic support.The active antenna element is by active diode and surpasses
Material cell is combined into, and its working frequency range is can control by changing unit size.The programmable substrate (FPGA) is in reflection
Surface backplate, is connected by the direct insertion terminal of 400 pins with each antenna element, each diode on control active antenna element
Break-make, reaches the working condition of unit on control antenna reflective face.The excitation loudspeaker source is conical horn, can produce broadband
Plane wave, by the excitation of loudspeaker driving source, aerial array is operated in different radiation modes, produces different angles and difference
The radiation beam of number, meets the radar system demand different to wave beam.Metallic support is anti-to constant excitation loudspeaker and antenna
Plate is penetrated, the orientation of excitation loudspeaker source and reflecting surface is can adjust, optimal reflected beam output is realized.
Preferred embodiment of the present utility model described in detail above, but, the utility model is not limited to above-mentioned reality
The detail in mode is applied, in range of the technology design of the present utility model, the technical solution of the utility model can be entered
The various equivalents of row, these equivalents belong to protection domain of the present utility model.It is further to note that above-mentioned
Each particular technique feature described in specific embodiment, in the case of reconcilable, can be by any suitable side
Formula is combined.In order to avoid unnecessary repetition, the utility model is no longer separately illustrated to various possible combinations.
Claims (4)
1. a kind of mirror antenna array, it is characterised in that including driving source, programmable substrate, Meta Materials surface and metal branch
Frame；The driving source, programmable substrate and Meta Materials surface are fixed on the metallic support；The Meta Materials surface includes some
Individual active antenna element, the active antenna element includes metamaterial unit and active two pole being connected between metamaterial unit
Pipe.
2. mirror antenna array as claimed in claim 1, it is characterised in that when the status park of active diode is different
When, " 0 " on Meta Materials surface, one state distribution are different；And then plane wave is reflected to form into required radiation beam.
3. mirror antenna array as claimed in claim 1, it is characterised in that the driving source is conical horn, the circle
Vertex angle theta=the 2arctan (a/2L) of loudspeaker is bored, wherein a is bell mouth surface diameter, and L is loudspeaker radiation length.
4. mirror antenna array as claimed in claim 3, it is characterised in that the conical horn is rotationally connected with metal branch
On frame, the rotational angle of conical horn is 0-60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299468.6U CN206271891U (en) | 2016-11-30 | 2016-11-30 | Mirror antenna array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621299468.6U CN206271891U (en) | 2016-11-30 | 2016-11-30 | Mirror antenna array |
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| Publication Number | Publication Date |
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| CN206271891U true CN206271891U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621299468.6U Active CN206271891U (en) | 2016-11-30 | 2016-11-30 | Mirror antenna array |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900233A (en) * | 2018-04-17 | 2018-11-27 | 东南大学 | Direct radiation radio digital communication system and method based on digital coding Meta Materials |
| CN112688073A (en) * | 2021-03-22 | 2021-04-20 | 成都迅翼卫通科技有限公司 | Reflection type multi-beam satellite communication panel array antenna control system and simulation method |
-
2016
- 2016-11-30 CN CN201621299468.6U patent/CN206271891U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900233A (en) * | 2018-04-17 | 2018-11-27 | 东南大学 | Direct radiation radio digital communication system and method based on digital coding Meta Materials |
| WO2019200803A1 (en) * | 2018-04-17 | 2019-10-24 | 东南大学 | Direct radiation wireless digital communication system and method based on digital coding metamaterial |
| US11165612B2 (en) | 2018-04-17 | 2021-11-02 | Southeast University | Direct radiation wireless digital communications system and method based on digital coding metamaterial |
| CN112688073A (en) * | 2021-03-22 | 2021-04-20 | 成都迅翼卫通科技有限公司 | Reflection type multi-beam satellite communication panel array antenna control system and simulation method |
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