CN107579352A - A kind of ultra wide band frequency suitable for antenna house selects surface - Google Patents
A kind of ultra wide band frequency suitable for antenna house selects surface Download PDFInfo
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- CN107579352A CN107579352A CN201710686760.6A CN201710686760A CN107579352A CN 107579352 A CN107579352 A CN 107579352A CN 201710686760 A CN201710686760 A CN 201710686760A CN 107579352 A CN107579352 A CN 107579352A
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Abstract
The present invention proposes that a kind of ultra wide band frequency suitable for antenna house selects surface, for solving the technical problem that working frequency range is too high and edge steep drop characteristic is poor existing for existing ultra wide band frequency selection surface, including the upper strata first medium plate stacked gradually from top to bottom, upper strata second medium plate, first foam layer, middle level dielectric-slab, second foam layer, lower floor's first medium plate and lower floor's second medium plate, the upper surface center of the upper strata second medium plate is printed with the first annulus paster, the upper surface center of the middle level dielectric-slab is printed with the meander line paster being made up of four metal broken lines, four metal broken lines are arranged in 90 degree of rotational symmetry, and it is connected at symmetric points, the upper surface center of lower floor's second medium plate is printed with the second annulus paster.The present invention realizes low frequency ultra-wide transmission performance and edge steep drop characteristic, can be applied in the radome design of the platforms such as communication system, radar and aircraft.
Description
Technical field
The invention belongs to microwave technical field, is related to a kind of ultra wide band frequency suitable for antenna house and selects surface, can answer
In radome design for platforms such as communication system, radar and aircraft.
Background technology
Frequency-selective surfaces are a kind of two-dimensional and periodic surfaces that can be reflected electromagnetic wave or transmitted, itself
Energy is not absorbed, can but efficiently control reflection and the transmission performance of electromagnetic wave.Frequency-selective surfaces are according to electromagnetic wave
Frequency response characteristic can be divided into two classes:One kind is band resistance type frequency-selective surfaces, and it shows to the electromagnetic wave in stopband
Total reflection characteristic;Another kind of is bandpass-type frequency-selective surfaces, and it shows total transmissivity characteristic to the electromagnetic wave in passband.Due to
This unique spa-tial filter properties, frequency-selective surfaces have very big application value in engineering field, and one of them is important
Application direction is exactly antenna house.
With the development of modern electronic technology, various electronic equipments excessively use, and surrounding environment is flooded with a large amount of electromagnetism good fortune
Penetrate, normal communication equipment is also by the electromagnetic environmental impact of worsening.In the systems such as modern communicationses, radar and aircraft,
Be often desirable to the electromagnetism wave energy in the antenna operating band and smoothly pass through frequency-selective surfaces antenna house, local antenna so as to
With normal work, and there is certain suppression to the electromagnetic wave outside antenna operating band, it is cannot be introduced into antenna house
Inside, that is, possesses antijamming capability.In such systems, in order to ensure the normal work of antenna, it is desirable to frequency-selective surfaces day
Irdome keeps transparent in antenna operating band, small with in-band insertion loss, the characteristics such as stability is good;In antenna operating band
Outside require good reflection characteristic, reduce interference of the clutter to antenna.In order to reduce as far as possible with outer clutter to antenna
Influence, the transition band width of frequency-selective surfaces antenna house band and out-of-band should be narrow as far as possible, and this requires frequency to select
Skin antenna cover has good edge steep drop characteristic.
In existing research, the research overwhelming majority for selecting surface transmission performance to ultra wide band frequency concentrates on X-band
And band above, for S, L-band and its following wave band, the most investigations of research of frequency-selective surfaces are working frequencies
Range of frequencies selects surface extremely limited to the transmission capacity of electromagnetic wave, transmission bandwidth.In addition, existing ultra wide band frequency choosing
Select in surface, the design for realizing outstanding edge steep drop characteristic is also very rare.How to design with low frequency ultra-wide transporting
The frequency-selective surfaces that outstanding edge steep drop characteristic can be had concurrently are a urgent problems to be solved.
The content of the invention
The shortcomings that it is an object of the invention to overcome above-mentioned prior art to exist, there is provided a kind of suitable for the super of antenna house
Wideband frequency selects surface, and for solving, working frequency range existing for existing ultra wide band frequency selection surface is too high and spy drops in edge suddenly
Property difference technical problem.
To achieve the above object, the technical scheme taken of the present invention is:
A kind of ultra wide band frequency suitable for antenna house selects surface, includes the passive resonance list of M × N number of periodic arrangement
Member, wherein M >=3, N >=3, the passive resonance unit include upper strata first medium plate 1, the upper strata the stacked gradually from top to bottom
Second medium plate 3, the first foam layer 4, middle level dielectric-slab 6, the second foam layer 7, lower floor's first medium plate 8 and lower floor second are situated between
Scutum 10, the upper surface center of the upper strata second medium plate 3 are printed with the first annulus paster 2, the middle level dielectric-slab 6
Upper surface center be printed with the meander line paster 5 being made up of four metal broken lines 51, four metal broken lines 51 are in
90 degree of rotational symmetry are arranged, and are connected at symmetric points, and the upper surface center of lower floor's second medium plate 10 is printed with
Second annulus paster 9.
A kind of above-mentioned ultra wide band frequency suitable for antenna house selects surface, the upper strata first medium plate 1, upper strata second
Dielectric-slab 3, middle level dielectric-slab 6, lower floor's first medium plate 8 and lower floor's second medium plate 10, it is homogeneous using specification and dielectric constant
Same square sheet material, its thickness H1=0.3mm~0.5mm, length of side D=14.8~15.5mm, dielectric constant is 2~2.6.
A kind of above-mentioned ultra wide band frequency suitable for antenna house selects surface, the foam of the first foam layer 4 and second
Interlayer 7, using the cuboid light-high-strength foamed material of specification and dielectric constant all same, its shape of cross section is length of side chi
The very little square equal with five described dielectric-slabs, height H2=8.5~9.5mm, dielectric constant 1.1.
A kind of above-mentioned ultra wide band frequency suitable for antenna house selects surface, and the first annulus paster 2, its center of circle is located at
The center of upper strata second medium plate 3, internal diameter size are 6.6~6.9mm, and outside dimension is 7~7.3mm.
A kind of above-mentioned ultra wide band frequency suitable for antenna house selects surface, four metal broken lines 51, its symmetric points
Positioned at the center of middle level dielectric-slab 6, each metal broken line 51 by arrange successively the first " L " shape minor matters 511, waveform broken line
512nd, the second " L " shape minor matters 513, the 3rd " L " shape minor matters 514 and the 4th " L " shape minor matters 515 form, and first " L " shape minor matters
511 brachyplast is concordant with the brachyplast of the 4th " L " shape minor matters 515, its outward flange center and the middle level dielectric-slab 6 where the edge
The center superposition on side.
A kind of above-mentioned ultra wide band frequency suitable for antenna house selects surface, and the second annulus paster 9, its center of circle is located at
The center of lower floor's second medium plate 10, internal diameter size are 6.2~6.5mm, and outside dimension is 6.6~6.9mm.
The present invention compared with prior art, has the following advantages that:
1. the present invention realizes the first annulus paster, meander line paster using the cellular construction stacked gradually from top to bottom
With the cascade of the second annulus paster, annulus paster and meander line paster have different frequency responses to incident electromagnetic wave, utilize
Coupling between each paster, ultra wideband transmissions characteristic and edge steep drop characteristic are realized, ensure that dry outside working band
Disturb and be effectively suppressed, the original radiation characteristic of working band internal antenna will not be had an impact.
2. the meander line paster that the present invention uses is made up of four metal broken lines, each metal broken line includes four " L " shapes
Minor matters and waveform broken line, extend current path, effectively reduce the working frequency of frequency-selective surfaces, while reduce list
Elemental size so that the unit cycle is much smaller than operation wavelength, it is suppressed that adverse effect of the higher order resonances pattern to performance.
3. the first annulus paster that the present invention uses, meander line paster and the second annulus paster are rotational symmetry structure,
For TE the and TM polarized waves in 0~45 ° of incident angular domain, transmission band is steadily smooth, and insertion loss is small, has stable well
Property.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention;
Fig. 2 is the overall structure diagram of passive resonance unit of the present invention;
Fig. 3 is the structural representation of metal broken line of the present invention;
Fig. 4 is transmission coefficient figure of the embodiment of the present invention 1 in 0~45° angle domain under different polarized wave irradiations;
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further detail.
Embodiment 1
Reference picture 1, ultra wide band frequency selection surface include the passive resonance unit of 10 × 10 periodic arrangements.
Reference picture 2, passive resonance unit includes the upper strata first medium plate 1 that stacks gradually from top to bottom, upper strata second is situated between
Scutum 3, the first foam layer 4, middle level dielectric-slab 6, the second foam layer 7, lower floor's first medium plate 8 and lower floor's second medium plate
10, the upper surface center of the upper strata second medium plate 3 is printed with the first annulus paster 2, and its center of circle is located at upper strata second
The center of dielectric-slab 3, internal diameter size 6.8mm, outside dimension 7.2mm, the upper surface center of the middle level dielectric-slab 6
The meander line paster 5 being made up of four metal broken lines 51 is printed with, four metal broken lines 51 are at the center of middle level dielectric-slab 6
It is connected at point, and is arranged using the point as symmetric points in 90 degree of rotational symmetry, in the upper surface of lower floor's second medium plate 10
Heart position is printed with the second annulus paster 9, and its center of circle is located at the center of lower floor's second medium plate 10, internal diameter size 6.4mm, outside
Footpath size is 6.8mm, and the first annulus paster 2 and the second annulus paster 9 use different sizes, realize high order of frequency response,
Transition band width is reduced, and improves Out-of-band rejection effect, the first annulus paster 2, the annulus paster of meander line paster 5 and second
9 be rotational symmetry structure, improves the stability of frequency-selective surfaces performance, the upper strata first medium plate 1, upper strata second
Dielectric-slab 3, middle level dielectric-slab 6, lower floor's first medium plate 8 and lower floor's second medium plate 10, it is homogeneous using specification and dielectric constant
With square sheet material, its thickness H1=0.4mm, length of side D=15mm, dielectric constant 2.2, the He of the first foam layer 4
Second foam layer 7, using the cuboid light-high-strength PMI foamed materials of specification and dielectric constant all same, its cross section
It is shaped as the size dimension square equal with five described dielectric-slabs, height H2=8.8mm, dielectric constant 1.1.
Reference picture 3, metal broken line 51 by arrange successively the first " L " shape minor matters 511, waveform broken line 512, second " L "
Shape minor matters 513, the 3rd " L " shape minor matters 514 and the 4th " L " shape minor matters 515 form, the brachyplast of the first " L " shape minor matters 511 with
The brachyplast of 4th " L " shape minor matters 515 is concordant, the center weight at its outward flange center and the side of the middle level dielectric-slab 6 where the edge
Close, the metal broken line of adjacent passive resonant element is connected with each other in unit intersection, the first " L " shape minor matters 511, its brachyplast
Length L1=0.7mm, long shoot length L2=5.5mm, the brachyplast length L3=0.9mm of waveform broken line 512, long shoot length L4=
5mm, the brachyplast length L6=4.5mm of the second " L " shape minor matters 513, long shoot length L5=5.5mm, the 3rd " L " shape minor matters 514
Brachyplast length L7=0.9mm, long shoot length L8=5.2mm, the brachyplast length L10=1.3mm of the 4th " L " shape minor matters 515, long shoot
Length L9=6.7mm, the line width W=0.2mm of metal broken line 51, metal broken line 51 is by four " L " shape minor matters and waveform broken line
Composition, extends current path, so as to reduce working frequency, while reduces the cycle of unit.
Embodiment 2, the structure of the present embodiment is same as Example 1, and only following parameter is made an adjustment:
Upper strata first medium plate 1, upper strata second medium plate 3, middle level dielectric-slab 6, lower floor's first medium plate 8 and lower floor second
The thickness H1=0.3mm of dielectric-slab 10, length of side D=14.8mm, dielectric constant 2, the first foam layer 4 and the second foam layer
7 height H2=8.5mm, the internal diameter size of the first annulus paster 2 are 6.6mm, outside dimension 7mm, first " L " shape minor matters
511, its brachyplast length L1=0.6mm, long shoot length L2=5mm, the long shoot length L4=4.5mm of waveform broken line 512, second
The brachyplast length L6=4mm of " L " shape minor matters 513, long shoot length L5=5.4mm, the brachyplast length L7 of the 3rd " L " shape minor matters 514
=0.8mm, long shoot length L8=4.9mm, the brachyplast length L10=1mm of the 4th " L " shape minor matters 515, long shoot length L9=
6.7mm, the internal diameter size of the second annulus paster 9 is 6.2mm, outside dimension 6.6mm.
Embodiment 3, the structure of the present embodiment is same as Example 1, and only following parameter is made an adjustment:
Upper strata first medium plate 1, upper strata second medium plate 3, middle level dielectric-slab 6, lower floor's first medium plate 8 and lower floor second
The thickness H1=0.5mm of dielectric-slab 10, length of side D=15.5mm, dielectric constant 2.6, the first foam layer 4 and the second foam folder
The height H2=9.5mm of layer 7, the internal diameter size of the first annulus paster 2 are 6.9mm, outside dimension 7.4mm, first " L " shape branch
Section 511, its brachyplast length L1=0.8mm, long shoot length L2=5.7mm, the long shoot length L4=5.1mm of waveform broken line 512,
The brachyplast length L6=5.4mm of second " L " shape minor matters 513, long shoot length L5=5.6mm, the brachyplast of the 3rd " L " shape minor matters 514
Length L7=1mm, long shoot length L8=6mm, the brachyplast length L10=1.2mm of the 4th " L " shape minor matters 515, long shoot length L9=
7mm, the internal diameter size of the second annulus paster 9 is 6.5mm, outside dimension 6.9mm.
Below in conjunction with l-G simulation test, the technique effect of the present invention is described further:
1st, simulated conditions and content:
Using business simulation software HFSS_15.0 to embodiment 1 in 0~45° angle domain, TE, TM polarized wave irradiation under
Transmission coefficient carries out simulation calculation, as a result as shown in figure 4, Fig. 4 (a) is the TE polarized waves irradiation in 0~45° angle domain of embodiment 1
Under transmission coefficient figure, Fig. 4 (b) be embodiment 1 in 0~45° angle domain TM polarized waves irradiation under transmission coefficient figure.
2nd, analysis of simulation result:
Reference picture 4 (a), the centre frequency of embodiment 1 is 2.16GHz, transmits 0.51~3.81GHz of passband frequency range,
In this passband frequency range, for electromagnetic wave incident in 0~45° angle domain, the frequency-selective surfaces shine in TE polarized waves
To penetrate lower Insertion Loss and be respectively less than 3dB, relative frequency bandwidth has reached 153%, realizes ultra-wide transmission characteristic, while on transmission passband side
Edge has steep drop characteristic, and transmission coefficient quickly falls to -55dB, and is maintained in frequency band wider thereafter below -15dB, band
Outside inhibitory can be good.
Reference picture 4 (b), transmission performance and Fig. 4 (a) of the embodiment 1 under the irradiation of TM polarized waves are basically identical, on passband side
Edge equally realizes steep drop characteristic, and transmission coefficient quickly falls to -45dB, and is maintained at -10dB in frequency band wider thereafter
Hereinafter, Out-of-band rejection is functional.
Above simulation result illustrates that the present invention realizes low frequency ultra-wide transmission characteristic, is provided simultaneously with good edge and drops suddenly
Characteristic, stable performance can be kept for the incident electromagnetic wave of different angle and polarization mode.
Above description is only embodiments of the invention, does not form any limitation of the invention, it is clear that for this area
For professional, after present invention and principle has been understood, all may without departing substantially from the principle of the invention, in the case of, enter
Various modifications and variations in row form and details, but these modifications and variations based on inventive concept are still the present invention's
Within scope of the claims.
Claims (6)
1. a kind of ultra wide band frequency suitable for antenna house selects surface, include the passive resonance unit of M × N number of periodic arrangement,
Wherein M >=3, N >=3, it is characterised in that:The passive resonance unit includes the upper strata first medium plate stacked gradually from top to bottom
(1), upper strata second medium plate (3), the first foam layer (4), middle level dielectric-slab (6), the second foam layer (7), lower floor first
Dielectric-slab (8) and lower floor's second medium plate (10), the upper surface center of the upper strata second medium plate (3) are printed with first
Annulus paster (2), the upper surface center of the middle level dielectric-slab (6) are printed with the song being made up of four metal broken lines (51)
Broken line paster (5), four metal broken lines (51) are arranged in 90 degree of rotational symmetry, and are connected at symmetric points, the lower floor
The upper surface center of second medium plate (10) is printed with the second annulus paster (9).
2. a kind of ultra wide band frequency suitable for antenna house according to claim 1 selects surface, it is characterised in that:It is described
Upper strata first medium plate (1), upper strata second medium plate (3), middle level dielectric-slab (6), lower floor's first medium plate (8) and lower floor second
Dielectric-slab (10), using the square sheet material of specification and dielectric constant all same, its thickness H1=0.3mm~0.5mm, length of side D
=14.8~15.5mm, dielectric constant are 2~2.6.
3. a kind of ultra wide band frequency suitable for antenna house according to claim 1 selects surface, it is characterised in that:It is described
First foam layer (4) and the second foam layer (7), steeped using the cuboid light-high-strength of specification and dielectric constant all same
Foam material, its shape of cross section are the size dimension square equal with five described dielectric-slabs, height H2=8.5~
9.5mm, dielectric constant 1.1.
4. a kind of ultra wide band frequency suitable for antenna house according to claim 1 selects surface, it is characterised in that:It is described
First annulus paster (2), its center of circle are located at the center of upper strata second medium plate (3), and internal diameter size is 6.6~6.9mm, outer diameter ruler
Very little is 7~7.4mm.
5. a kind of ultra wide band frequency suitable for antenna house according to claim 1 selects surface, it is characterised in that:It is described
Four metal broken lines (51), its symmetric points are located at the center of middle level dielectric-slab (6), and each metal broken line (51) by what is arranged successively
First " L " shape minor matters (511), waveform broken line (512), the second " L " shape minor matters (513), the 3rd " L " shape minor matters (514) and
Four " L " shape minor matters (515) are formed, and the brachyplast of the first " L " shape minor matters (511) and the brachyplast of the 4th " L " shape minor matters (515) are put down
Together, the center superposition at its outward flange center and the side of the middle level dielectric-slab (6) where the edge.
6. a kind of ultra wide band frequency suitable for antenna house according to claim 1 selects surface, it is characterised in that:It is described
Second annulus paster (9), its center of circle are located at the center of lower floor's second medium plate (10), and internal diameter size is 6.2~6.5mm, external diameter
Size is 6.6~6.9mm.
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CN108832303A (en) * | 2018-06-07 | 2018-11-16 | 西安电子科技大学 | A kind of frequency-selective surfaces that high angle is stable |
CN108897331A (en) * | 2018-05-11 | 2018-11-27 | 安徽尼古拉电子科技有限公司 | A kind of aircraft altitude control method and system based on Radar Technology |
CN108963395A (en) * | 2018-07-20 | 2018-12-07 | 西安电子科技大学 | A kind of miniaturization band resistance type frequency-selective surfaces |
CN109449601A (en) * | 2018-10-31 | 2019-03-08 | 宋应龙 | It is a kind of that surface cell is selected based on the ultra wide band frequency of low pass and band logical multi-layer-coupled |
CN110034408A (en) * | 2019-04-24 | 2019-07-19 | 西安电子科技大学 | A kind of broad passband 3D frequency-selective surfaces |
CN110854543A (en) * | 2019-11-15 | 2020-02-28 | 电子科技大学 | Dual-frequency broadband wide-angle circularly polarized grid based on miniaturized unit |
CN110994172A (en) * | 2019-12-26 | 2020-04-10 | 西安邮电大学 | Antenna housing based on wide stop band low frequency multilayer frequency selective surface |
CN113540784A (en) * | 2021-06-21 | 2021-10-22 | 西安电子科技大学 | Integrated broadband frequency selection antenna cover with heat dissipation characteristic and mobile communication system |
CN113889767A (en) * | 2021-04-16 | 2022-01-04 | 哈尔滨工业大学 | Liquid crystal tunable super surface with narrow transition bandwidth |
CN114843725A (en) * | 2022-05-16 | 2022-08-02 | 江苏电子信息职业学院 | Ultra-wideband large-angle band-stop type frequency selection surface |
CN114976660A (en) * | 2021-02-23 | 2022-08-30 | 西安电子科技大学 | Band-pass frequency selection surface with ultra-wide band out-of-band rejection characteristic |
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CN108832303B (en) * | 2018-06-07 | 2019-11-15 | 西安电子科技大学 | A kind of frequency-selective surfaces that high angle is stable |
CN108832303A (en) * | 2018-06-07 | 2018-11-16 | 西安电子科技大学 | A kind of frequency-selective surfaces that high angle is stable |
CN108963395A (en) * | 2018-07-20 | 2018-12-07 | 西安电子科技大学 | A kind of miniaturization band resistance type frequency-selective surfaces |
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CN109449601A (en) * | 2018-10-31 | 2019-03-08 | 宋应龙 | It is a kind of that surface cell is selected based on the ultra wide band frequency of low pass and band logical multi-layer-coupled |
CN110034408A (en) * | 2019-04-24 | 2019-07-19 | 西安电子科技大学 | A kind of broad passband 3D frequency-selective surfaces |
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CN110994172A (en) * | 2019-12-26 | 2020-04-10 | 西安邮电大学 | Antenna housing based on wide stop band low frequency multilayer frequency selective surface |
CN110994172B (en) * | 2019-12-26 | 2021-04-27 | 西安邮电大学 | Antenna housing based on wide stop band low frequency multilayer frequency selective surface |
CN114976660A (en) * | 2021-02-23 | 2022-08-30 | 西安电子科技大学 | Band-pass frequency selection surface with ultra-wide band out-of-band rejection characteristic |
CN113889767A (en) * | 2021-04-16 | 2022-01-04 | 哈尔滨工业大学 | Liquid crystal tunable super surface with narrow transition bandwidth |
CN113889767B (en) * | 2021-04-16 | 2024-08-20 | 哈尔滨工业大学 | Liquid crystal tunable super surface with narrow transition bandwidth |
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