CN205178016U - On --spot emitting surface antenna able to programme based on novel artifical electromagnetism surface - Google Patents
On --spot emitting surface antenna able to programme based on novel artifical electromagnetism surface Download PDFInfo
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- CN205178016U CN205178016U CN201520861560.6U CN201520861560U CN205178016U CN 205178016 U CN205178016 U CN 205178016U CN 201520861560 U CN201520861560 U CN 201520861560U CN 205178016 U CN205178016 U CN 205178016U
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Abstract
The utility model discloses an on - -spot emitting surface antenna able to programme based on novel artifical electromagnetism surface, including aperture antenna and the digital electromagnetism of reflection surface, reflect digital electromagnetism surface and form by the phase place unit that periodicity was arranged, under the control state of difference, reflection phase place, reflection range or the polarization mode of looks bit cell are different. Through the state of real time control looks bit cell, can realize the radiation pattern of expectation under the unchangeable condition of holding frequency, can realizing real -time beam control. The utility model has the advantages of control is convenient, and the reaction is quick, the facilitate promotion, can make it to be applicable to different wave bands such as microwave, millimeter wave or terahertz wave through the component size that changes digital electromagnetism surface simultaneously.
Description
Technical field
The utility model relates to antenna technology, especially a kind of field-programmable surface of emission antenna based on novel artificial resistance electromagnetic surface, its can holding frequency constant while realize wave beam control.
Background technology
Reflector antenna has the advantages such as high-gain, Sidelobe, main lobe be narrow, can in formation high-gain with while requiring shape wave beam, and feed is simple, design comparison is easy, cost is lower, can meet the requirement of multiple conventional radar system.Reflector antenna is one of principal mode of satellite communication ground based terminal station antenna, is widely used in distance radio communication and high resolution radar etc.Reflector antenna is made up of a reflecting surface and a feed antennas, by reflecting surface, electromagnetic scattering effect is formed to the antenna pattern expected.
Traditional reflector antenna realizes the radiation direction expected by the shape in design reflectivity face, design is once complete, and the stuctures and properties of reflecting surface is just fixed, and cannot control in real time antenna according to actual needs.
Utility model content
Utility model object: provide a kind of field-programmable surface of emission antenna based on novel artificial resistance electromagnetic surface, to solve the problems referred to above that prior art exists.
Technical scheme: a kind of field-programmable surface of emission antenna based on novel artificial resistance electromagnetic surface, comprise aperture antenna and reflection digital resistance electromagnetic surface, described reflection digital resistance electromagnetic surface is made up of the phase unit of periodic arrangement, under different state of a controls, the reflected phase will of described phase unit, reflection amplitudes or polarization mode are different, obtain the state out of phase unit of periodic distribution.
By the state of the mode control phase unit such as FPGA, thus realize periodicity or the distribution of expection property of different conditions phase unit, realize electromagnetic modulation.
Further, every m × n is adjacent and state is identical phase unit forms a resistance electromagnetic surface submodule, and in adjacent resistance electromagnetic surface submodule, the state of phase unit is contrary, m, n be not less than 1 natural number.
Further, described phase unit comprises medium substrate and is positioned at the metallic circuit on medium substrate surface, be connected with the diode for control phase location mode in this metallic circuit, when diode is in different states, the reflected phase will of phase unit differs 180 °.Described diode is PIN type diode.Diode in each phase unit is electrically connected with FPGA, and FPGA, in order to regulate the state of each diode, obtains the phase unit array that phase state arrangement mode is different, realizes wave beam and controls.
Beneficial effect: by the state of real-time control phase unit, can realize the antenna pattern expected, under the condition that holding frequency is constant, can realize real-time wave beam and control.It is convenient that the utility model has control, and reaction fast, is convenient to the advantage promoted, and while can, by changing the component size on digital electromagnetic surface, make it to be applicable to the different-wavebands such as microwave, millimeter wave or THz wave.
Accompanying drawing explanation
Fig. 1 a and Fig. 1 b is structural representation of the present utility model.
Fig. 2 a and Fig. 2 b is respectively resistance electromagnetic surface schematic diagram when resistance electromagnetic surface submodule comprises 5 × 5 phase unit, 10 × 5 phase unit.
Fig. 3 is the structural representation of phase unit.
Fig. 4 a and Fig. 4 b is respectively the far field radiation pattern of resistance electromagnetic surface when resistance electromagnetic surface submodule comprises 5 × 5 phase unit, 10 × 5 phase unit.
Fig. 5 a and Fig. 5 b is respectively simulation result and the test result comparison diagram of resistance electromagnetic surface when resistance electromagnetic surface submodule comprises 5 × 5 phase unit, 10 × 5 phase unit, and the deflection wherein in Fig. 5 a and Fig. 5 b is respectively 45 ° and 63.4 °.
Embodiment
After deliberation after background technology, applicant thinks: the medium character of Novel manual electromagnetic material and constituent material have nothing to do, and come from the micro-structural of material, it be by have the sub-wavelength elementary cell of geometry in particular periodically/aperiodically arrange, or be implanted to a kind of artificial material that in basis material body, (or surface) is formed.
The difference of Novel manual electromagnetic material and traditional sense material is just to instead of original microscopic dimensions unit (atom or molecule) with macro-size unit, thus there is the physical property not available for many nature conventional materials, to electromagnetic wave, there is extraordinary control ability.It is a kind of ultra-thin two-dimension array plane, is made up of metamaterial structure unit, and it can handle the characteristics such as electromagnetic phase place, polarization mode, communication mode flexibly and effectively.
Below in conjunction with Fig. 1 a to Fig. 5 b, ins and outs of the present utility model and principle are described.
As illustrated in figs. ia and ib, the utility model mainly comprises aperture antenna 101 as feed and reflection digital resistance electromagnetic surface 1 based on the field-programmable surface of emission antenna of novel artificial resistance electromagnetic surface.As we know from the figure, launch surperficial the arrangement in length and breadth by a kind of phase unit of digital electromagnetic to form.
In this embodiment, described reflected electromagnetic surface is made up of binary phase element (having the phase unit of two states), by the state of the super surperficial binary unit of the real-time control figure of FPGA, the arrangement of the elementary cell of design two states, realize the antenna pattern expected, under the condition that holding frequency is constant, realize wave beam and control; This reflector antenna controls convenient, and reaction fast, is convenient to promote; By changing the component size on digital electromagnetic surface, be applicable to the different-wavebands such as microwave, millimeter wave and THz wave.
Fig. 2 a and Fig. 2 b provides two kinds of case study on implementation.In fig. 2 a, every 5 × 5 adjacent and the phase unit 11 that state is identical forms a resistance electromagnetic surface submodule, and in adjacent resistance electromagnetic surface submodule, the state of phase unit is contrary.In figure 2b, every 10 × 5 adjacent and phase place is identical phase unit forms a resistance electromagnetic surface submodule, in adjacent resistance electromagnetic surface submodule, the state of phase unit is contrary.In above-mentioned two kinds of embodiments, phase unit is checkerboard distribution, and each resistance electromagnetic surface submodule is equivalent to a gridiron pattern, and the state being positioned at gridiron pattern phase unit is identical, and the state being arranged in adjacent gridiron pattern phase unit is different.Technical staff is by controlling tessellated size to control the main lobe direction of scattered field.Therefore, the phase unit quantity in each resistance electromagnetic surface submodule (gridiron pattern) can adjust as required, and namely on each direction, quantity m × n, m, the n of phase unit is non-zero natural number.
Forward Fig. 3 to, the structure of phase unit is described, this phase unit 11 has three-decker, be made up of the metallic circuit on medium substrate and surface, a PIN type diode 11a is placed in this metallic circuit, bottom is DC feedback 11b, to control the on off state of diode, realizes the binary feature of phase unit reflected phase will.Under the ON/OFF two states of diode, the reflected phase will of phase unit differs 180 °.
In this embodiment, S=1mm, W=4.3mm, the length of side of binary unit is 7mm, and the live width of all metallic circuits is 0.2mm.Meanwhile, the on off state of diode is controlled in real time by field programmable gate array (FPGA).In addition, technical staff is by the structural parameters of adjustment phase unit, and such as medium substrate surface metal circuit length, width regulate its reflection characteristic.Namely the reflection characteristic of reflection digital resistance electromagnetic surface is determined by the on off state of phase unit and structural parameters.Related personnel controls the state of diode in each phase unit by FPGA, can realize the periodic arrangement of phase unit or meet the arrangement of related contemplated, thus controls the operating state of reflector antenna.
There is phase difference to the super surperficial different units of numeral in the aperture antenna as feed, so need to compensate.Different size S and W of element circuit, corresponding different reflected phase will, by setting up amplitude-phase table corresponding to S and W, adjusts the size of the different units of resistance electromagnetic surface, poor with compensation of phase.The value of suitable S and W can be calculated by least square method and obtain.
As shown in figures 4 a and 4b, the reflector antenna in simulation result display embodiment under the constant condition of holding frequency, can change the main lobe direction of wave beam in real time.
As shown in fig. 4 a, reflector antenna in this embodiment is when resistance electromagnetic surface submodule (gridiron pattern) is 5 × 5 phase unit, the main lobe direction of scattered wave appears at (43 °, 45 °), (43 °, 135 °), (43 °, ﹣ 135 °), on (43, ﹣ 45 °).
As shown in Figure 4 b, reflector antenna in this embodiment is when gridiron pattern is 10 × 5 unit, the main lobe direction of scattered wave appears at (32.6 °, 63.4 °), (32.6 °, 116.6 °), (32.6 °, ﹣ 116.6 °), on (32.6 °, ﹣ 63.4 °).
As shown in figure 5 a and 5b, as seen the simulation result of above-mentioned two embodiments and test result substantially identical.
Reflector antenna in the utility model is different according to working frequency range, and different processing technology can be adopted to realize.
In a word, in the utility model, numeral is super to be surperficially made up of a kind of binary elementary cell (phase unit), binary condition can be two kinds of reflected phase will, also can be two kinds of reflection amplitudes, or two kinds of polarization modes, these modes are equivalent, and technical staff can design as required.By the state of FPGA control phase unit, the permutation and combination of two states elementary cell can be realized, thus realize electromagnetic modulation.
More than describe preferred implementation of the present utility model in detail; but; the utility model is not limited to detail in above-mentioned execution mode (such as; by changing the component size on digital electromagnetic surface; be applicable to the different-wavebands such as microwave, millimeter wave and THz wave); within the scope of technical conceive of the present utility model, can carry out multiple equivalents to the technical solution of the utility model, these equivalents all belong to protection range of the present utility model.
Claims (5)
1. the field-programmable surface of emission antenna based on novel artificial resistance electromagnetic surface, comprise aperture antenna and reflection digital resistance electromagnetic surface, it is characterized in that: described reflection digital resistance electromagnetic surface is made up of the phase unit of periodic arrangement, under different state of a controls, the reflected phase will of described phase unit, reflection amplitudes or polarization mode are different.
2. as claimed in claim 1 based on the field-programmable surface of emission antenna of novel artificial resistance electromagnetic surface, it is characterized in that, every m × n is adjacent and state is identical phase unit forms a resistance electromagnetic surface submodule, in adjacent resistance electromagnetic surface submodule, the state of phase unit is contrary, m, n be not less than 1 natural number.
3. as claimed in claim 1 based on the field-programmable surface of emission antenna of novel artificial resistance electromagnetic surface, it is characterized in that, described phase unit comprises medium substrate and is positioned at the metallic circuit on medium substrate surface, the diode for control phase location mode is connected with in this metallic circuit, when diode is in different states, the reflected phase will of phase unit differs 180 °.
4., as claimed in claim 3 based on the field-programmable surface of emission antenna of novel artificial resistance electromagnetic surface, it is characterized in that, described diode is PIN type diode.
5. as claimed in claim 3 based on the field-programmable surface of emission antenna of novel artificial resistance electromagnetic surface, diode in each phase unit is electrically connected with FPGA, FPGA, in order to regulate the state of each diode, obtains the phase unit array that phase state arrangement mode is different, realizes wave beam and controls.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520861560.6U CN205178016U (en) | 2015-10-30 | 2015-10-30 | On --spot emitting surface antenna able to programme based on novel artifical electromagnetism surface |
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| CN201520861560.6U CN205178016U (en) | 2015-10-30 | 2015-10-30 | On --spot emitting surface antenna able to programme based on novel artifical electromagnetism surface |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281037A (en) * | 2015-10-30 | 2016-01-27 | 江苏赛博防务技术有限公司 | Field programmable emission surface antenna based on novel artificial electromagnetic surface |
| CN106299717A (en) * | 2016-10-24 | 2017-01-04 | 东南大学 | A kind of microwave section 1 bit anisotropy able to programme surpasses surface |
-
2015
- 2015-10-30 CN CN201520861560.6U patent/CN205178016U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281037A (en) * | 2015-10-30 | 2016-01-27 | 江苏赛博防务技术有限公司 | Field programmable emission surface antenna based on novel artificial electromagnetic surface |
| CN106299717A (en) * | 2016-10-24 | 2017-01-04 | 东南大学 | A kind of microwave section 1 bit anisotropy able to programme surpasses surface |
| CN106299717B (en) * | 2016-10-24 | 2022-01-04 | 东南大学 | Microwave band programmable 1-bit anisotropic super surface |
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