CN104659495B - A kind of automatically controlled artificial structure's material for adjusting radiation frequency and preparation method thereof - Google Patents
A kind of automatically controlled artificial structure's material for adjusting radiation frequency and preparation method thereof Download PDFInfo
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- CN104659495B CN104659495B CN201510055860.XA CN201510055860A CN104659495B CN 104659495 B CN104659495 B CN 104659495B CN 201510055860 A CN201510055860 A CN 201510055860A CN 104659495 B CN104659495 B CN 104659495B
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Abstract
The invention discloses a kind of automatically controlled artificial structure's material and preparation method thereof for adjusting radiation frequency, the step of making, includes：(1) center operating frequency f is selected, and the spacing of the artificial structure's material cell and metal line width of metal structure for forming artificial structure's material cell, the electromagnetic property of metal species and base material are determined with this；(2) metal structure selectsThen the structure of type, loading capacitance diode recycle electromagnetic simulation software CST to calculate, and record respective resonant frequencies, paint resonant frequency voltage curve；(3) in antenna H faces direction periodic arrangement artificial structure's material, and these artificial structure's material cells are divided into the equal N number of region of spacing, N >=10, the unit number that each region includes is equal, and capacitance added on unit is equal in each region.Artificial structure's material of the present invention usesType metal structure adds variable capacitance, greatly reduces the influence generated during additional conducting wire to material electromagnetic property.
Description
Technical field
The invention belongs to antenna technical fields, and in particular to it is a kind of it is automatically controlled adjust radiation frequency artificial structure's material and its
Production method.
Background technology
Due to the electromagnetic property of artificial structure's material, people are still, traditional by artificial structure's material application to antenna
Artificial structure's material smaller bandwidth seriously limits use of artificial structure's material on antenna, in order to solve this problem, people
Start to study emphatically the electromagnetic property by extraneous means active control artificial structure material in real time.2006, Zhejiang University
There is research group to be extended on steerable antenna using antiparallel S rings artificial material, but this antenna is special based on S rings negative refraction
Property, therefore antiparallel S rings can only make single-frequency steerable antenna, frequency band is still very narrow.
Invention content
It is an object of the invention to：For existing negative index artificial material application bandwidth it is narrow the problem of, propose a kind of electricity
Control adjusts artificial structure's material of radiation frequency and preparation method thereof, and this structural material can be comparatively wide near working frequency
Bandwidth range within work, by changing the operating voltage of varactor, can realize artificial structure's material working frequency
Effective Regulation, and then antenna radiation frequencies are expanded.
To achieve these goals, a kind of production method institute of the automatically controlled artificial structure's material for adjusting radiation frequency of the present invention
The technical solution used for：
(1) center operating frequency f is selected, and the spacing of artificial structure's material cell and the artificial knot of composition are determined with this
The electromagnetic property of the metal line width of the metal structure of structure material cell, metal species and base material；Wherein, artificial structure's material
Between the spacing of material unit is 1/2 λ~λ of corresponding center operating frequency f, the line width of metal structure is between 1/20 λ -1/5 λ；
(2) metal structure selectsThe structure of type, in the opening of the metal structure of each artificial structural material unit
Loading capacitance diode, then recycle electromagnetic simulation software CST calculate diode under different voltages through spectral property and
Resonant frequency characteristic, and capacitance added by change, record respective resonant frequencies, paint resonant frequency-voltage curve；
(3) in antenna H faces direction periodic arrangement artificial structure's material, and it is equal that these artificial structure's materials are divided into spacing
N number of region, N >=10, the unit number that artificial structure's material in each region includes is equal, added on unit in each region
Capacitance is equal.
Preferably, the center operating frequency selected in the step (1) is 0.3GHz~300GHz.
Preferably, in the step (1) metal structure material selection copper, silver or gold.
Preferably, the base material in the step (1) be non-magnetic media material, dielectric constant between 2-10,
Magnetic conductivity is 1.
Preferably, the additional reversed bias voltage value of varactor is within 10V.
Preferably, in the step (3), the incidence wave of antenna is plane wave, and amplitude and position are mutually perpendicular to propagation
Direction plane is equal.
Meanwhile the present invention provides a kind of automatically controlled artificial structure's material for adjusting radiation frequency, it is equally spaced including several
Artificial structure's material, the unit number that each regional artificial's structural material includes is equal, and artificial structure's material cell includesType
Metal structure and base material,The central closing loading capacitance diode of the metal structure of type, it is single in each region
The capacitance of added di-cap is equal in member.By adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the structure that the art of this patent uses forType metal structure adds variable capacitance, when impressed DC voltage, itself
Metal can be used as conducting wire, greatly reduce the influence generated during additional conducting wire to material electromagnetic property.
2nd, sub-wavelength artificial structure's material metal of the art of this patent design is simple in structure, facilitates making.
3rd, the antenna of the art of this patent design need to be only controlled without transfiguration two on region using voltage-controlled method
The control to artificial structure's material and its antenna radiation frequencies can be completed in voltage value in pole pipe.
Description of the drawings
Fig. 1 is artificial structure's material cell schematic diagram of the present invention.
Fig. 2 is that the working frequency of the present invention is the relational graph between the diode voltage of 19GHz and modulating frequency.
Fig. 3 is artificial structure's material schematic diagram of the present invention.
Specific embodiment
With reference to Fig. 1-3, technical scheme of the present invention is illustrated with reference to specific embodiment.
Embodiment 1：
A kind of production method of the automatically controlled artificial structure's material for adjusting radiation frequency is as follows：
(1) Selection Center working frequency f is 19GHz, and corresponding wavelength X is 16mm.The material of metal structure be copper, substrate
Material is FR-4 (r=4.9, r=1), determines that artificial structure's material cell isThe cubic units of type, the length of metal structure
It is equal with width, take a=6mm.Metal line width be w=0.8mm, middle opening length be g=1mm, metal thickness t=0.014mm,
Base material thickness d=0.20mm；Spacing between artificial structure's material cell is 8mm,The middle opening of the metal structure of type
Locate loading capacitance diode.
(2) designing material stacks 20 layer materials in the propagation direction, when the voltage being applied on varactor is from 2-8v
When, frequency modulation(PFM) 18GHz-20GHz.Frequency and the relationship of diode voltage are as shown in Figure 2.
(3) design antenna size is 80mm × 8.5mm × 20mm, and 20 regions are divided on H faces, and each region has phase
Same position phase, is adjusted by the voltage on the varactor to being loaded in artificial structure's material, you can completes antenna work
The adjusting of working frequency.The distribution of artificial structure's material is as shown in Figure 3.
Embodiment 2：
A kind of production method of the automatically controlled artificial structure's material for adjusting radiation frequency is as follows：
(1) Selection Center working frequency f is 35GHz, and corresponding wavelength X is 8mm.The material of metal structure is golden, substrate
Material is FR-4 (r=4.9, r=1), determines that artificial structure's material cell isThe cubic units of type, the length of metal structure
It is equal with width, take a=3mm.Metal line width is w=0.4mm, and middle opening length is g=0.5mm, metal thickness t=
0.014mm, base material thickness d=0.1mm；Spacing between artificial structure's material cell is 4mm.
(2) it in the opening loading capacitance diode of the metal structure of each artificial structural material unit, then recycles
Electromagnetic simulation software CST calculates diode and penetrates spectral property and resonant frequency characteristic, and change and powered up under different voltages
Capacitance records respective resonant frequencies, paints resonant frequency-voltage curve.
(3) design antenna size is 80mm × 4mm × 20mm, and 20 regions are divided on H faces, and each region has identical
Position phase, be adjusted by the voltage on the varactor to being loaded in artificial structure's material, you can complete Antenna Operation
The adjusting of frequency.The distribution of artificial structure's material is as shown in Figure 3.
Embodiment 3：
A kind of production method of the automatically controlled artificial structure's material for adjusting radiation frequency is as follows：
(1) Selection Center working frequency f is 94GHz, wavelength X 32mm.The material of metal structure is gold, and base material is
FR-4 (r=4.9, r=1) determines that artificial structure's material cell isThe cubic units of type, length of side mm, metal structure
Length and width it is equal, take a=13mm.Metal line width is w=1.6mm, and middle opening length is g=2mm, metal thickness t=
0.014mm, base material thickness d=0.4mm；Spacing between artificial structure's material cell is 16mm.
(2) it in the opening loading capacitance diode of the metal structure of each artificial structural material unit, then recycles
Electromagnetic simulation software CST calculates diode and penetrates spectral property and resonant frequency characteristic, and change and powered up under different voltages
Capacitance records respective resonant frequencies, paints resonant frequency-voltage curve.
(3) design antenna size is 80mm × 4mm × 20mm, and 20 regions are divided on H faces, and each region has identical
Position phase, be adjusted by the voltage on the varactor to being loaded in artificial structure's material, you can complete Antenna Operation
The adjusting of frequency.The distribution of artificial structure's material is as shown in Figure 3.
Radiation frequency will be determined by formula below；
Wherein L is inductance, and C is the capacitance applied after voltage, and ω is corresponding instantaneous working frequency.
Meanwhile a kind of automatically controlled artificial structure's material for adjusting radiation frequency of the invention, including several equally spaced people
Work structural material, the unit number that each regional artificial's structural material includes is equal, and artificial structure's material cell includesThe gold of type
Belong to structure and base material,The central closing loading capacitance diode of the metal structure of type, in each region on unit
The capacitance of added di-cap is equal.
Claims (7)
1. a kind of production method of the automatically controlled artificial structure's material for adjusting radiation frequency, which is characterized in that include the following steps：
(1) center operating frequency f is selected, and the spacing of artificial structure's material cell and composition artificial structure's material are determined with this
The electromagnetic property of the metal line width of the metal structure of material unit, metal species and base material；Wherein, artificial structure's bill of materials
Between the spacing of member is 1/2 λ~λ of corresponding working frequency f, the line width of metal structure is between 1/20 λ -1/5 λ；
(2) metal structure selectsThe structure of type, in the opening loading of the metal structure of each artificial structural material unit
Then di-cap recycles electromagnetic simulation software CST to calculate diode and penetrates spectral property and resonance under different voltages
Frequency characteristic, and capacitance added by change, record respective resonant frequencies, paint resonant frequency-voltage curve；
(3) in antenna H faces direction periodic arrangement artificial structure's material, and these artificial structure's materials are divided into the equal N of spacing
A region, N >=10, the unit number that each region includes is equal, and capacitance added on unit is equal in each region；
The metal structure of each artificial structural material unit use middle opening length g, two side positions be also equipped with
The isometric opening of middle opening.
2. the production method of the automatically controlled artificial structure's material for adjusting radiation frequency according to claim 1, it is characterised in that：
Center operating frequency selected in the step (1) is 0.3GHz-300GHz.
3. the production method of the automatically controlled artificial structure's material for adjusting radiation frequency according to claim 1, it is characterised in that：
Material selection copper, silver or the gold of metal structure in the step (1).
4. the production method of the automatically controlled artificial structure's material for adjusting radiation frequency according to claim 1, it is characterised in that：
Base material in the step (1) is non-magnetic media material, and dielectric constant is between 2-10, magnetic conductivity 1.
5. the production method of the automatically controlled artificial structure's material for adjusting radiation frequency according to claim 1, it is characterised in that：
The additional reversed bias voltage value of varactor is within 10V.
6. the production method of the automatically controlled artificial structure's material for adjusting radiation frequency according to claim 1, it is characterised in that：
In the step (3), the incidence wave of antenna is plane wave, and amplitude and position are mutually equal perpendicular to direction of propagation plane.
7. a kind of artificial structure's material for the automatically controlled adjusting radiation frequency that method according to claim 1-6 any one makes
Material, which is characterized in that including several equally spaced artificial structure's materials, the unit number that each regional artificial's structural material includes
Equal, artificial structure's material cell includesThe metal structure and base material of type,It opens the centre of the metal structure of type
Mouthful place's loading capacitance diode, in each region on unit added by di-cap capacitance it is equal.
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Cited By (1)
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| CN111864401A (en) * | 2020-07-27 | 2020-10-30 | 浙江大学 | Adjustable solid electromagnetic vacuum material based on electromagnetic resonance structure |
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| CN105490029B (en) * | 2015-12-09 | 2018-10-16 | 电子科技大学 | A kind of metamaterial structure that harmonic wave selectively generates |
| CN107404004A (en) * | 2016-05-19 | 2017-11-28 | 深圳超级数据链技术有限公司 | Meta Materials, antenna reflective face, the control method of Meta Materials and device |
| CN107404001A (en) * | 2016-05-19 | 2017-11-28 | 深圳超级数据链技术有限公司 | Meta Materials, antenna reflective face, the control method of Meta Materials and device |
| CN110690578B (en) * | 2018-07-06 | 2021-04-20 | 中国航空工业集团公司济南特种结构研究所 | Wave absorbing structure for solving problem that wave transmittance of antenna housing test for electronic warfare exceeds hundred |
| CN109301491A (en) * | 2018-09-17 | 2019-02-01 | 深圳市太赫兹科技创新研究院有限公司 | Metamaterial structure and Meta Materials microwave resonator |
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| CN203553361U (en) * | 2013-11-13 | 2014-04-16 | 深圳光启创新技术有限公司 | Antenna reflecting plate and low back lobe antenna |
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