CN108054516A - The frequency-selective surfaces that a kind of frequency response is stablized - Google Patents
The frequency-selective surfaces that a kind of frequency response is stablized Download PDFInfo
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- CN108054516A CN108054516A CN201710349144.1A CN201710349144A CN108054516A CN 108054516 A CN108054516 A CN 108054516A CN 201710349144 A CN201710349144 A CN 201710349144A CN 108054516 A CN108054516 A CN 108054516A
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- frequency
- fss
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- transmission line
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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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
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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
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/0026—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective said selective devices having a stacked geometry or having multiple layers
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- Aerials With Secondary Devices (AREA)
Abstract
The frequency-selective surfaces that a kind of frequency response is stablized, the fundamental resonance unit of the frequency-selective surfaces FSS is made of two kinds of transmission lines of thickness, thick transmission line is rectangular flat plate shape flag face, thin transmission line is flagpole shape, it is connected to together in flag shape, each resonant element is made of side by side the flag of flag and one side rotation 180 degree；Thin transmission line connects into the metal wire frame for forming resonant element, and then each cell configuration is qb or dp to flagpole neighbour, and then each cell configuration is not bq or pd, bp or dq to neighbour to flagpole；Double-layer structure shape is identical up and down by FSS, symmetrical in mirror symmetry or overturning.
Description
Technical field
The frequency-selective surfaces structure and material stablized the present invention relates to frequency-selective surfaces FSS, especially frequency response.
Background technology
Existing frequency-selective surfaces (FSS) are by a large amount of passive resonance units evenly distributed single-layer or multi-layer week formed
Phase property array structure is made of the metal patch unit or aperture unit of periodic arrangement.It this surface can be humorous in unit
Band resistance (patch-type) or the defeated characteristic of band logical (aperture type) is nearby presented in vibration frequency, and the application of FSS is very extensive at present, can be used for
The negative reflector of reflector antenna improves the utilization rate of antenna, available for stealth technology, such as radar day to realize channeling
Irdome is to reduce radar cross section of antenna system etc..This selection structure has good choosing to the transmission and reflection of electromagnetic wave
Selecting property, in its bandpass range, electromagnetic wave can pass through FSS structures, and in the range of its band resistance, electromagnetic wave is then complete
It is reflected back, by adjustment, the design to periodic structure, different band logicals can be obtained and with resistance scope.
FSS currently also has important answer as a kind of artificial material in terms of wireless energy transfer and radio frequency identification (RFID)
With.FSS can improve the efficiency of wireless energy transfer, can also improve the stability of RFID responses.In current RFID applications
One common problem is that the response of RFID label tag (Tag) is affected by environment bigger.Same RFID label tag installation is not
With on medium, such as plastics, wood, building, packing box, clothing, frequency response, identification distance etc. have Different Effects,
This takes very big difficulty to practical application.
It typically can be found in as follows：CN201510200529.2；The invention discloses a kind of frequency-selective surfaces, including
100 units, bottom plates, the unit are arranged in 10 rows 10 and arrange, and the unit per a line is horizontally aligned, the list of each row
Member is vertically aligned, and the unit is square sheets, length of side 5.8mm, thickness 0.1mm, in the unit just
In be provided with a square hole, the length of side of the square hole is 4.2mm, and the spacing between each unit is 1.9mm, described
Unit is 1 by relative dielectric constant, and electrical conductivity is made of the material of 200s/m, is attached to made of insulating materials on bottom plate.This
Invention size is small, convenient for conformal with system, is easily installed.The FSS structures suction ripple range band of the present invention is roomy, can be in 2-18GHz
Ultra wide band range in carry out suction ripple, reflectance factor is less than -15dB, particularly suitable for ultra-wideband antenna field.
The CN201510035441.X applyings date：2015-01-23；The invention discloses a kind of frequency-selective surfaces structure,
Belong to Electromagnetic Field and Microwave Technology field, include periodic arrangement honeycomb on the metal layer of the frequency-selective surfaces structure
Multiple metal units of shape structure；The metal unit includes hexagonal rings, three extremely sub- patches and three triangle patch,
The frequency-selective surfaces structure includes more than one intermediate repetitive structure, and intermediate repetitive structure is set successively from top to bottom
It puts；The intermediate repetitive structure includes intermediate metal layer (3) and intermediate substrate layer (2).A kind of Multilayer Frequency-Selective Surfaces knot
Structure：Including more than one intermediate repetitive structure, and intermediate repetitive structure is set gradually from top to bottom, while the intermediate weight
Complex structure the upper surface of is provided with skinning layer 5, sets base substrate layer 7, bottom metal layers 8, lower skinning layer 6 in turn below；Tool
There is the characteristics of low insertion loss, wide frequency bandwidth, wide electromagnetic wave incident angle and frequency bandpass filtering performance.It can be widely used for nothing
Line communicates, radar, in the antenna house of the equipment such as electronic navigation and electronic countermeasure.
The content of the invention
The present invention seeks to propose a kind of novel multi-layer FSS for not having to application available for wireless energy transfer and RFID etc.
And design method.The new FSS frequency responses are sufficiently stable.
The technical scheme is that the frequency-selective surfaces that a kind of frequency response is stablized, the frequency-selective surfaces FSS
Fundamental resonance unit be made of two kinds of transmission lines of thickness, thick transmission line be rectangular flat plate shape flag face, thin transmission line be flagpole
Shape is connected to together in flag shape, and each resonant element is made of side by side the flag of flag and one side rotation 180 degree；
Thin transmission line connects into the metal wire frame for forming resonant element, and then each cell configuration is qb or dp to flagpole neighbour, and flagpole is not near
Adjacent then each cell configuration is bq or pd, bp or dq；Double-layer structure shape is identical up and down by FSS, in mirror symmetry or overturning pair
Claim.
The fundamental resonance unit of the frequency-selective surfaces FSS is made of two kinds of transmission lines of thickness, and thick transmission line is rectangular
Shape tabular flag face, thin transmission line are flagpole shape, are connected to together in flag shape, each resonant element by flag and
The flag for rotating 180 degree on one side is formed side by side；Thin transmission line connects into the metal wire frame for forming resonant element, and flagpole neighbour is then
Each unit is qb or dp, and then each unit is not bq or pd, bp or dq to neighbour to flagpole；Double-layer structure is 90 degree of rotations to FSS up and down
Turn symmetrical.
Advantageous effect：Because the capacitance above and below in the utility model structure between two layers is very high, thus the method for the present invention is set
The resonant frequency of the FSS of meter is mainly determined by the capacitance in resonant element between the inductance of thin transmission line and tablet (flag planar).
When there is other media to be attached on corresponding FSS, attachment medium is the inductive impact of the capacitance tablet and thin transmission line
It is minimum, almost it can be ignored.Therefore thus the FSS responses of method design will hardly be influenced by external world's attachment medium.
Description of the drawings
Fig. 1 (a) novel double-layer structure frequency selection surface textures of the present invention；The current distributions of 1 (b) resonant element；
The CURRENT DISTRIBUTION of upper and lower two layers of resonant element is very different, as shown in Fig. 1 (b).
Fig. 2 novel multi-layer cellular construction frequency-selective surfaces schematic diagrames.This structure is to horizontal polarized wave and vertically polarized wave
Response is consistent.
Caused centre frequency variation when Fig. 3 other media are attached on novel frequency selection surface；It is shown in Fig. 2
FSS simulated response；
Fig. 4 (a) legacy frequencies select surface, and resonant element is made of the transmission line of tablet and cross-like shape；Fig. 4 (b)
Surface texture is selected for novel frequency of the present invention, is the single layer structure of FSS, but upper and lower two layers does not overturn.
The frequency-selective surfaces of Fig. 5 (a) actual fabrications, 5 (b) are the partial enlarged view of Fig. 5 (a).
Fig. 6 is when there is medium attachment, the frequency situation of change on the novel frequency selection surface of emulation and actual measurement.
Specific embodiment
The frequency-selective surfaces that a kind of frequency response is stablized, the fundamental resonance unit of the frequency-selective surfaces FSS is (as schemed
Shown in 1 (a).Each resonant element) it is made of two kinds of transmission lines of thickness, thick transmission line is rectangular flat plate shape flag face, thin to transmit
Line is flagpole shape, is connected to together in flag shape, each resonant element rotates the flag of 180 degree simultaneously by flag and one side
Row is formed；Thin transmission line connects into the metal wire frame for forming resonant element, and then each unit is qb or dp to flagpole neighbour, flagpole
Then each unit is not bq or pd or bp or dq to neighbour；It is FSS two layers of knot up and down in place of the novel and unique of the method for the present invention
It is identical to be configured shape, but it is symmetrical (Flipped) in mirror symmetry or overturning；Mirror image such as qb is dp shapes, and the mirror image of dp is qb shapes.
When there is incidence wave, the CURRENT DISTRIBUTION of upper and lower two layers of resonant element is very different, as shown in Fig. 1 (b).By taking right planar as an example,
When radio wave is incident in a certain direction, electric current flows into upper strata right planar.Because overturning the reason for symmetrical, electric current will flow
Go out lower floor's right planar；The charge polarity that upper and lower two layers of right planar is inducted is on the contrary, there are extremely strong capacitances between tablet.Left side
Tablet situation is similar.
The structure of either each layer of resonant element array is all 90 degree of rotational symmetry.
Fundamental resonance unit can also have other similar building forms.
When the electric field of incident radio wave is horizontal direction or vertical direction, FSS shown in FIG. 1 can show difference
Response.It is influenced to reduce FSS by incidence wave direction of an electric field, the cellular construction composition that FSS can be as shown in Figure 2.This element is every
One layer of structure is all 90 degree of rotational symmetry, therefore response is influenced very little by incidence wave direction of an electric field.Adjacent two layers are in turn over
Turn symmetrical, as described above, layer capacitance is very strong.Equally, the response of FSS is influenced very small by attachment medium.Shown in Fig. 2
FSS simulated response it is as shown in Figure 3.When there is different medium to be attached to both sides, the response of FSS has almost no change.
As a comparison, Fig. 4 (a) is a kind of common FSS, and resonant element is by tablet and the transmission line group of cross-like shape
Into.The single layer structure of FSS shown in Fig. 4 (b) is identical with Fig. 2.Structure uniquely difference lies in adjacent layer is identical,
It does not overturn symmetrical.This two kinds of FSS are as shown in table 1 by attachment medium influence.Using the FSS of novel unit structure design by attached
The influence for medium is also as shown in table 1.As can be seen from Table 1, it is only traditional structure that novel medium is influenced by attachment medium
1/4 to 1/10.The FSS designed using novel method will be with high frequency stability.
The FSS of one utilization method design proposed by the present invention is as shown in Figure 5.Experimental result is as shown in Figure 6.Actual measurement knot
Fruit shows that the frequency response of new FSS is highly stable when dielectric material is attached to unilateral or bilateral.
Because the capacitance between two layers upper and lower in the utility model structure is very high, the FSS's that thus the method for the present invention designs
Resonant frequency is mainly determined by the capacitance in resonant element between the inductance of thin transmission line and tablet (flag planar).It is other when having
When medium is attached on corresponding FSS, attachment medium is minimum the inductive impact of the capacitance tablet and thin transmission line, several
It can be ignored.Therefore thus the FSS responses of method design will hardly be influenced by external world's attachment medium.
When the electric field of incident radio wave is horizontal direction or vertical direction, FSS shown in FIG. 1 can show difference
Response.It is influenced to reduce FSS by incidence wave direction of an electric field, the cellular construction composition that FSS can be as shown in Figure 2.This element is every
One layer of structure is all 90 degree of rotational symmetry, therefore response is influenced very little by incidence wave direction of an electric field.Adjacent two layers are in turn over
Turn symmetrical, as described above, layer capacitance is very strong.Equally, the response of FSS is influenced very small by attachment medium.Shown in Fig. 2
FSS simulated response it is as shown in Figure 3.When there is different medium to be attached to both sides, the response of FSS has almost no change.
As a comparison, Fig. 4 (a) is a kind of common FSS, and resonant element is by tablet and the transmission line group of cross-like shape
Into.The single layer structure of FSS shown in Fig. 4 (b) is identical with Fig. 2.Structure uniquely difference lies in adjacent layer is identical,
It does not overturn symmetrical.This two kinds of FSS are as shown in table 1 by attachment medium influence.Using the FSS of novel unit structure design by attached
The influence for medium is also as shown in table 1.As can be seen from Table 1, it is only traditional structure that novel medium is influenced by attachment medium
1/4 to 1/10.The FSS designed using novel method will be with high frequency stability.
Table 1：Different FSS frequency shift (FS)s caused by by attachment medium influence compare
Shown in FSS such as Fig. 5 (a) of one utilization method design proposed by the present invention.Experimental result is as shown in Figure 6.Actual measurement
The result shows that when dielectric material is attached to unilateral or bilateral, the frequency response of new FSS is highly stable.
Claims (2)
1. a kind of frequency-selective surfaces that frequency response is stablized, it is characterized in that the fundamental resonance list of the frequency-selective surfaces FSS
Member is made of two kinds of transmission lines of thickness, and thick transmission line is rectangular flat plate shape flag face, and thin transmission line is flagpole shape, is connected to together
In in flag shape, each resonant element is made of side by side the flag of flag and one side rotation 180 degree；Thin transmission line connects into
Form the metal wire frame of resonant element, then each cell configuration is qb or dp to flagpole neighbour, flagpole not neighbour's then each unit shape
Shape is bq or pd, bp or dq；Double-layer structure shape is identical up and down by FSS, symmetrical in mirror symmetry or overturning.
2. a kind of frequency-selective surfaces that frequency response is stablized, it is characterized in that the fundamental resonance list of the frequency-selective surfaces FSS
Member is made of two kinds of transmission lines of thickness, and thick transmission line is rectangular flat plate shape flag face, and thin transmission line is flagpole shape, is connected to together
In in flag shape, each resonant element is made of side by side the flag of flag and one side rotation 180 degree；Thin transmission line connects into
Form the metal wire frame of resonant element, then each unit is qb or dp to flagpole neighbour, flagpole not neighbour then each unit for bq or
Pd, bp or dq；Double-layer structure is 90 degree of rotational symmetry to FSS up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710349144.1A CN108054516B (en) | 2017-05-17 | 2017-05-17 | Frequency selective surface with stable frequency response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710349144.1A CN108054516B (en) | 2017-05-17 | 2017-05-17 | Frequency selective surface with stable frequency response |
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| Publication Number | Publication Date |
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| CN108054516A true CN108054516A (en) | 2018-05-18 |
| CN108054516B CN108054516B (en) | 2020-08-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114065890A (en) * | 2021-11-22 | 2022-02-18 | 苏州大学应用技术学院 | Identification tag, preparation method thereof and identification method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8271241B2 (en) * | 2005-01-18 | 2012-09-18 | University Of Massachusetts Lowell | Chiral metamaterials |
| CN103715477A (en) * | 2013-12-03 | 2014-04-09 | 西安交通大学 | Microwave frequency band three-frequency-point polarization-independent 90-degree polarized revolver and application thereof |
-
2017
- 2017-05-17 CN CN201710349144.1A patent/CN108054516B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8271241B2 (en) * | 2005-01-18 | 2012-09-18 | University Of Massachusetts Lowell | Chiral metamaterials |
| CN103715477A (en) * | 2013-12-03 | 2014-04-09 | 西安交通大学 | Microwave frequency band three-frequency-point polarization-independent 90-degree polarized revolver and application thereof |
Non-Patent Citations (2)
| Title |
|---|
| AMIR NADER ASKARPOUR ET AL: "Optical Chirality Enhancement in Twisted Metamaterials", 《2014 THIRD CONFERENCE ON MILLIMETER-WAVE AND TERAHERTZ TECHNOLOGIES (MMWATT)》 * |
| M. HUSSEIN ET AL: "Frequency Selective Surface with Simple Configuration Stepped-Impedance Elements", 《2016 10TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114065890A (en) * | 2021-11-22 | 2022-02-18 | 苏州大学应用技术学院 | Identification tag, preparation method thereof and identification method |
| CN114065890B (en) * | 2021-11-22 | 2024-05-10 | 苏州大学应用技术学院 | Identification tag, preparation method thereof and identification method |
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| CN108054516B (en) | 2020-08-07 |
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