CN102931456B - 424GHz quasi-optics frequency selective surface - Google Patents
424GHz quasi-optics frequency selective surface Download PDFInfo
- Publication number
- CN102931456B CN102931456B CN201210372320.0A CN201210372320A CN102931456B CN 102931456 B CN102931456 B CN 102931456B CN 201210372320 A CN201210372320 A CN 201210372320A CN 102931456 B CN102931456 B CN 102931456B
- Authority
- CN
- China
- Prior art keywords
- periodic unit
- periodic
- frequency
- dipole
- silicon material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a 424GHz quasi-optics frequency selective surface comprising multiple rows, wherein each row comprises a plurality of periodic units which are arranged in the same way, the periodic units between the rows are distributed in a staggered manner, any one periodic unit and another two adjacent periodic units on the row adjacent to the row on which the periodic unit are arranged by forming an angle being 60 degrees; each periodic unit is square, the side length of the periodic unit is 160-180um, and each periodic unit comprises a metal layer and a silicon material layer, wherein the metal layer covers the silicon material layer; the thickness of the metal layer is 4-12um, and the thickness of the silicon material layer is 350-420um; the metal layer is integrally shaped like a flat plate and comprises a single dipole and two circular apertures, the dipole is shaped like a groove and positioned at the central position of the metal layer; the two circular apertures are respectively positioned on the two sides of the dipole; and the silicon material layer is integrally shaped like the flat plate and is made of pure silicon materials, the relative dielectric constant is more than 11, and the loss tangent is 10<-5>-10<-4>.
Description
Technical field
The present invention relates to wireless communication field, particularly a kind of 424GHz quasi-optics frequency-selective surfaces.
Background technology
Frequency-selective surfaces (Frequency Selective Surfaces, FSS) is a kind of two-dimensionally periodic structure with frequency selective characteristic.As a kind of novel spatial filter, because it has advantage more more than conventional filter in millimere-wave band and submillimeter region, thus have in military and civilian field and apply very widely, FSS has become a study hotspot in recent years.
Along with the progress of microwave remote sensing technique, the spaceborne detection system of millimeter wave submillimeter wave has become a main trend, its operating frequency forward Terahertz future development, surface is selected by frequency of utilization, can realize multiband multiplexing, thus frequency-selective surfaces becomes one of core component in quasi-optics dividing network.
Following technical requirement should be met for the frequency-selective surfaces in quasi-optics dividing network:
1, incidence angle is fixed: according to the requirement of dividing network structure, and the incidence angle of incident wave is restricted to 45 °, and this just requires to consider this factor, to realize best selecting frequency characteristic when designing.
2, low-loss: the loss source of frequency-selective surfaces is more, there are thermal losses, insertion loss, graing lobe loss etc., therefore the characteristic of the size of periodic pattern unit, shape and dielectric layer to be considered in the design, to reach the bandwidth of design objective requirement, operating frequency, transmission coefficient and reflection coefficient.
3, polarizer stability: frequency-selective surfaces, under the excitation of different polarized wave, should have stable operating characteristic.
The operating frequency of frequency-selective surfaces is relevant with size, and operating frequency is higher, and size is less.In addition, the operating frequency of frequency-selective surfaces is also relevant with its shape.Frequency-selective surfaces under particular job frequency has specific shape.Frequency-selective surfaces of the prior art has lower operating frequency, as 54GHz, 150GHz etc.424GHz is typical oxygen absorption peak frequency, in the passive detection of submillimeter wave air, have very high using value.The frequency-selective surfaces that operating frequency is 424G Hz is still there is not in prior art.
Summary of the invention
The object of the invention is to overcome in prior art and there is not the defect that operating frequency is the frequency-selective surfaces of 424G Hz, thus a kind of 424GHz quasi-optics frequency-selective surfaces is provided.
To achieve these goals, the invention provides a kind of 424GHz quasi-optics frequency-selective surfaces, its working band is 414-434GHz, includes multirow, and every a line comprises multiple periodic unit; Periodic unit in each row is placed in an identical manner, and the periodic unit between row and row is staggered, and two periodic units of the next-door neighbour of the adjacent lines that arbitrary periodic unit is expert at it become 60 ° to arrange;
Described periodic unit quadrate, its length of side is between 160-180um; Described periodic unit comprises metal level and silicon material layer, and described metal level is covered in the top of described silicon material layer; The thickness of described metal level is between 4-12um, and the thickness of described silicon material layer is between 350-420um;
Described metal layer totals becomes plate, it comprises single dipole and two circular apertures, and described dipole becomes grooved, is positioned at the center of described metal level, the 1/7-1/6 of frequency corresponding wavelength centered by its length, centered by width frequency corresponding wavelength 1/24-1/20 between; Described two circular apertures lay respectively at the both sides of described dipole; The diameter of described circular aperture and the width in dipole gap are than being 1:1.2; Described metal level adopts gilding to realize;
Described silicon material layer entirety becomes plate, adopts pure silicon material to make, its relative dielectric constant more than 11, loss angle tangent 10
-5-10
-4.
In technique scheme, the orthogonal or chamfering rectangle of described dipole.
In technique scheme, equally arrange about two circular apertures on described metal level and dipole three, two circular apertures are up and down in arrangement placed in the middle.
In technique scheme, the length of side of described periodic unit is 166um.
In technique scheme, the thickness of the metal level of described periodic unit is 10um.
The invention has the advantages that: working band is wide, three dB bandwidth reaches 20GHz; Curve characteristic is precipitous, and high to the isolation of the outer frequency of band, selectivity is good; Insertion loss is little, and filtering characteristic is good; Structure is simple, is convenient to processing; Physical characteristics of materials is stablized, and characteristic drift is little in actual applications; Centre frequency is 424GHz, and in the application of submillimeter wave atmospheric remote sensing, prospect is good.
Accompanying drawing explanation
Fig. 1 is the vertical view of the periodic unit of frequency-selective surfaces of the present invention;
Fig. 2 is the cutaway view of the periodic unit of frequency-selective surfaces of the present invention;
Fig. 3 is the arrangement mode schematic diagram of frequency-selective surfaces of the present invention;
Fig. 4 is the schematic diagram of the power transfer characteristic curve of frequency-selective surfaces of the present invention;
Fig. 5 is the schematic diagram of the phase characteristic curve of frequency-selective surfaces of the present invention.
Embodiment
Now the invention will be further described by reference to the accompanying drawings.
Frequency-selective surfaces of the present invention comprises multiple periodic unit, and each periodic unit has identical structure.First the structure of periodic unit is described below.
Fig. 1 is the vertical view of the periodic unit of frequency-selective surfaces of the present invention, and Fig. 2 is the cutaway view of the periodic unit of frequency-selective surfaces of the present invention.As can be seen from Fig. 1 and Fig. 2, described periodic unit quadrate, its length of side is between 160-180um, and as a kind of optimal way, the length of side of the periodic unit in the present embodiment is 166um.Described periodic unit comprises metal level and silicon material layer, and metal level is wherein covered in the top of described silicon material layer.The thickness of described metal level is between 4-12um, and as a kind of optimal way, the thickness of the metal level in the present embodiment is 10um.The thickness of described silicon material layer is between 350-420um.
Described metal level adopts single dipole both sides to load the configuration of circular aperture, and described dipole is positioned at the center of described periodic unit, and in the present embodiment, its shape is rectangle, and in other embodiments, its shape also can be chamfering rectangle.The length of described dipole is about the 1/7-1/6 of centre frequency corresponding wavelength, and the 1/24-1/20 of frequency corresponding wavelength centered by width, to provide stable passband and operating frequency.Described circular aperture is positioned at the both sides of described dipole, as a preferred implementation, equally arrange about two circular apertures and dipole three, two circular apertures are up and down in arrangement placed in the middle, and the diameter of circular aperture and the width in dipole gap are than being 1:1.2.Described metal level can adopt gilding to realize.
Described silicon material layer adopts pure silicon material to make, its relative dielectric constant more than 11, loss angle tangent 10
-5-10
-4, to ensure that the operating characteristic of frequency-selective surfaces is optimized to greatest extent.
It is more than the description of the periodic unit to frequency-selective surfaces of the present invention.Below the arrangement mode of described periodic unit is illustrated.
With reference to figure 3, frequency-selective surfaces of the present invention includes multirow, periodic unit in every a line is placed all in an identical manner, and the periodic unit between row and row is staggered, as a certain edge of periodic unit arranged on left and right sides aligns with the center line of the periodic unit of adjacent lines.Two periodic units of the next-door neighbour of these adjacent lines just making a periodic unit and its be expert at become 60 ° to arrange, that is: the summit on the right side of the periodic unit on the right adjacent with this periodic unit in the summit on the left of the periodic unit on the left side adjacent with this periodic unit in the central point (totally two points) of the top edge of two adjacent with this periodic unit in the summit of the central point of a certain periodic unit top edge, its lower limb both sides, next line periodic units, next line, next line is connected, and forms an equilateral triangle.
Frequency-selective surfaces of the present invention has good operating characteristic.Fig. 4 is the frequency response curve of frequency-selective surfaces of the present invention, and Fig. 5 is the phase characteristic curve of frequency-selective surfaces of the present invention.As can be seen from these two figure, frequency-selective surfaces of the present invention in the course of the work, to 45 degree of incident frequencies be 414-434GHz electromagnetism all through, the electromagnetic wave of other frequencies outside working frequency range is played to the effect of reflection.
It should be noted last that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, modify to technical scheme of the present invention or equivalent replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (5)
1. a 424GHz quasi-optics frequency-selective surfaces, its working band is 414-434GHz, it is characterized in that, includes multirow, and every a line comprises multiple periodic unit; Periodic unit in each row is placed in an identical manner, periodic unit between row and row is staggered, two periodic units of the adjacent lines that arbitrary periodic unit is expert at it become 60 ° to arrange, and this arbitrary periodic unit is close to mutually with two periodic units of these adjacent lines;
Described periodic unit quadrate, its length of side is between 160-180um; Described periodic unit comprises metal level and silicon material layer, and described metal level is covered in the top of described silicon material layer; The thickness of described metal level is between 4-12um, and the thickness of described silicon material layer is between 350-420um;
Described metal layer totals becomes plate, it comprises single dipole and two circular apertures, and described dipole becomes grooved, is positioned at the center of described metal level, centered by its length frequency corresponding wavelength 1/7-1/6 between, centered by width frequency corresponding wavelength 1/24-1/20 between; Described two circular apertures lay respectively at the both sides of described dipole; The diameter of described circular aperture and the width in dipole gap are than being 1:1.2; Described metal level adopts gilding to realize;
Described silicon material layer entirety becomes plate, adopts pure silicon material to make, its relative dielectric constant more than 11, loss angle tangent 10
-5-10
-4.
2. 424GHz quasi-optics frequency-selective surfaces according to claim 1, is characterized in that, the orthogonal or chamfering rectangle of described dipole.
3. 424GHz quasi-optics frequency-selective surfaces according to claim 1, is characterized in that, equally arranges about two circular apertures on described metal level and dipole three, and two circular apertures are up and down in arrangement placed in the middle.
4. 424GHz quasi-optics frequency-selective surfaces according to claim 1, is characterized in that, the length of side of described periodic unit is 166um.
5. 424GHz quasi-optics frequency-selective surfaces according to claim 1, is characterized in that, the thickness of the metal level of described periodic unit is 10um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372320.0A CN102931456B (en) | 2012-09-28 | 2012-09-28 | 424GHz quasi-optics frequency selective surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210372320.0A CN102931456B (en) | 2012-09-28 | 2012-09-28 | 424GHz quasi-optics frequency selective surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102931456A CN102931456A (en) | 2013-02-13 |
| CN102931456B true CN102931456B (en) | 2014-12-31 |
Family
ID=47646201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210372320.0A Active CN102931456B (en) | 2012-09-28 | 2012-09-28 | 424GHz quasi-optics frequency selective surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102931456B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151580B (en) * | 2013-03-19 | 2015-03-18 | 中国科学院空间科学与应用研究中心 | Double-frequency-band submillimeter wave FSS (frequency selective surface) with loading fractal structure |
| CN106793732A (en) * | 2017-01-03 | 2017-05-31 | 哈尔滨工业大学 | Geometric center type infrared band dual band pass optical window electromagnetic armouring structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400043A (en) * | 1992-12-11 | 1995-03-21 | Martin Marietta Corporation | Absorptive/transmissive radome |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7190325B2 (en) * | 2004-02-18 | 2007-03-13 | Delphi Technologies, Inc. | Dynamic frequency selective surfaces |
-
2012
- 2012-09-28 CN CN201210372320.0A patent/CN102931456B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5400043A (en) * | 1992-12-11 | 1995-03-21 | Martin Marietta Corporation | Absorptive/transmissive radome |
Non-Patent Citations (2)
| Title |
|---|
| 厚屏频率选择表面设计及工艺研究;方春易;《中国优秀硕士学位论文全文数据库》;20111206;全文 * |
| 毫米波带通频率选择表面研究;何显宗;《中国优秀硕士学位论文全文数据库》;20090215;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102931456A (en) | 2013-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102931454B (en) | Millimeter wave frequency selective surface with stable polarization | |
| US9812786B2 (en) | Metamaterial-based transmitarray for multi-beam antenna array assemblies | |
| CN108701904B (en) | Frequency selective surface | |
| CN102723601B (en) | Ultra-wide-band dual-notch paster antenna adopting wide-attenuation-band electromagnetic band gap structure | |
| KR101944568B1 (en) | Antenna isolation using metamaterial | |
| CN105914462B (en) | Based on antenna-filter-aerial array ultra wide band mobile communication antenna cover | |
| CN103151580B (en) | Double-frequency-band submillimeter wave FSS (frequency selective surface) with loading fractal structure | |
| CN106602252B (en) | 2.5-dimensional ultra-wideband mobile communication radome with grid square ring loaded via hole structure | |
| CN105190998A (en) | Array antenna | |
| WO2013185708A1 (en) | Multiple-input multiple-output antenna and mobile terminal | |
| CN104638321B (en) | Polarization converter based on Multilayer Frequency-Selective Surfaces | |
| CN108963465B (en) | Cellular metamaterial surface capable of generating orbital angular momentum waves | |
| CN106654567B (en) | Capacitive and inductive surface coupling mechanism miniaturized high-performance high-frequency band communication radome | |
| CN205790397U (en) | A kind of Meta Materials transparent structure, antenna house and antenna system | |
| CN113644449B (en) | Broadband reconfigurable frequency selective surface based on single-sided loading PIN diode | |
| CN104681955A (en) | UWB (ultra wide band) antenna with dual resistance band function | |
| CN103441327A (en) | Multi-notch ultra wide band antenna | |
| CN102931456B (en) | 424GHz quasi-optics frequency selective surface | |
| CN113922095A (en) | Adjustable suction-permeation integrated conformal frequency selective surface | |
| CN103151579B (en) | Based on the broadband submillimeter-wave frequency selection surface of fractal structure | |
| Zhang et al. | Design of narrow band-pass frequency selective surfaces for millimeter wave applications | |
| JP2015070541A (en) | Antenna device | |
| CN110600885B (en) | Frequency selective surface with absorption-reflection-absorption characteristics | |
| Naser‐Moghadasi et al. | CPW‐fed compact slot antenna for WLAN operation in a laptop computer | |
| Sen et al. | Design of a wide band Frequency Selective Surface (FSS) for multiband operation of reflector antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee after: NATIONAL SPACE SCIENCE CENTER, CAS Address before: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee before: Space Science & Applied Research Centre, Chinese Academy of Sciences |
|
| CP01 | Change in the name or title of a patent holder |