CN107257029A - A kind of 340GHz film-types transmit polarization changer - Google Patents
A kind of 340GHz film-types transmit polarization changer Download PDFInfo
- Publication number
- CN107257029A CN107257029A CN201710506687.XA CN201710506687A CN107257029A CN 107257029 A CN107257029 A CN 107257029A CN 201710506687 A CN201710506687 A CN 201710506687A CN 107257029 A CN107257029 A CN 107257029A
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- CN
- China
- Prior art keywords
- film
- metal
- 340ghz
- polarization changer
- periodicity
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- 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.)
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Classifications
-
- 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
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
-
- 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
- H01Q15/24—Polarising devices; Polarisation filters
- H01Q15/242—Polarisation converters
- H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
Abstract
Polarization changer is transmitted the invention discloses a kind of 340GHz film-types, the transmission-type polarization changer based on double-decker array structure metamaterial can be realized, it is adaptable in 340GHz ± 15GHz band limits, realize that line polarization wave is mutually changed with circularly polarised wave.The polarization changer is a circular metal pad, and the both side surface of the metallic gasket posts film, wherein, each film outer surface is provided with the array that periodicity metal unit is constituted, the periodicity metal unit is made up of the rectangle sheet metal through film and its side along row's square-shaped metal thin slice that rectangle sheet metal length direction is uniformly arranged, wherein the rectangle sheet metal and row's square-shaped metal thin slice leave space.
Description
Technical field
The invention belongs to radar and the communications field, and in particular to a kind of 340GHz film-types transmit polarization changer.
Background technology
Research and application with people to Terahertz field, high performance terahertz wave band transmission apparatus are obtained increasingly
Many demands, and manufacturing process is limited to, the microwave device of conventional method becomes very difficult in the realization of high band.In recent years
Extensive research is obtained to develop Terahertz Technology for application quasi-optics principle, various quasi-optics grid elements are opened
Begin to be applied in microwave device, oscillator, amplifier, frequency mixer, phase shifter, frequency multiplier and opened using quasi-optics grid design
Close etc., and apply the structure of loading converter to realize that the regulation and control of antenna polarization state have more application in low frequency microwave wave band, and
Design and fabrication technology is limited to, the polarization changer transmission loss that presently, there are is larger, and working frequency range is relatively low, phase-modulation is special
Property is not ideal enough, and in terahertz wave band because electromagnetic wavelength is smaller, therefore the periodic unit size of polarization changer is smaller,
The minor variations of size easily make polarization changer device performance be deteriorated.
The content of the invention
In view of this, polarization changer is transmitted the invention provides a kind of 340GHz film-types, can realized based on bilayer
The transmission-type polarization changer of array structure Meta Materials, it is adaptable in 340GHz ± 15GHz band limits, realize line polarization wave with
Circularly polarised wave is mutually changed.
Implement technical scheme as follows：
A kind of 340GHz film-types transmit polarization changer, it is characterised in that the polarization changer is a circular metal
Pad, and the both side surface of the metallic gasket posts film, wherein, each film outer surface is provided with periodicity metal unit
The array of composition, the periodicity metal unit is by the rectangle sheet metal through film and its side along rectangle metal foil
Row's square-shaped metal thin slice composition that leaf length direction is uniformly arranged, wherein the rectangle sheet metal and row square
Sheet metal leaves space.
Further, the film use dielectric constant for 3 ultra-thin polyimide substrate；
Further, the thickness of the film is 10um；
Further, the material of periodicity metal unit array uses aluminium；
Further, the thickness of periodicity metal unit array is 600nm；
Further, a width of 120um of square-shaped metal thin slice of periodicity metal unit array, rectangle sheet metal is wide
For 121um, the cycle of periodicity metal unit is 503mm*272mm.
Beneficial effect：
1st, the present invention is realized to not homopolarity using the method that cycle metallic pattern is printed on ultra-thin polyimide substrate
Change the modulation of direction electromagnetic wave phase, and different from common Meta Materials, increase due to devising big electric size regular metal pattern
Plus the robustness of device.Selection of the polarization changer to simple wire grid machining accuracy problem and base material is avoided to ask
Topic.
2nd, transformation device of the invention due to electric size it is larger, so its is simple in construction, robustness is high；
3rd, not only applying frequency is high by the present invention, and application bandwidth, and meets 340GHz ± 15GHz band limits applications,
And transmission-type polarization changer circularly polarised wave out-of-roundness in 340GHz ± 15GHz band limits is less than 3dB, system transmission and damaged
Consumption is less than 2dB；
4th, the present invention is due to using ultrathin film as substrate, it is achieved that ultralow transmission loss；
Brief description of the drawings
Fig. 1 is that polarization changer of the present invention applies the structural representation on duplexer；
Fig. 2 is polarization changer periodic structure schematic diagram of the present invention；
Fig. 3 is polarization changer HFSS simulation model figures of the invention；
Fig. 4 is phase difference of the electromagnetic wave through latter two quadrature component of the polarization changer of the present invention；
Fig. 5 is transmission loss of the electromagnetic wave through latter two quadrature component of the polarization changer of the present invention.
Wherein, 1- inhales ripple cavity, 2- polarization isolation devices, 3- polarization changers, 31- periodicity metal units, 32- squares
Sheet metal.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
Polarization changer is transmitted the invention provides a kind of 340GHz film-types, a kind of 340GHz is placed in and is based on film-type device
Part broadband duplexer is the inside for inhaling cavity, wherein, the duplexer includes：Inhale ripple cavity 1, polarization isolation device 2 and polarization conversion
Device 3；The ripple cavity 1 of inhaling is the cylindrical cavity that an outer shape is T fonts, and the cavity is that interior shape is consistent with outer shape
And through the hollow cavity 1 of each end face, the polarization isolation device 2 is an oval metal pad, and the metal oval pad
The side of piece is provided with the film with metal line grating, and the device is placed in the suction ripple cavity 1 in the top of vertical hollow cavity
Level mutually passes through place with vertical hollow cavity, and is in 45 degree clockwise with horizontal cavity；A kind of 340GHz film-types transmit polarization conversion
Device, the polarization changer 3 is a circular metal pad, and the both side surface of the metallic gasket posts film, wherein, it is each
Film outer surface is provided with the array that periodicity metal unit is constituted, and the periodicity metal unit is by the rectangle through film
32 groups of row's square-shaped metal thin slice that sheet metal 31 and its side are uniformly arranged along the length direction of rectangle sheet metal 31
Into wherein the row's square-shaped metal thin slice 32 of the rectangle sheet metal 31 and one leaves space.As shown in Figure 1, 2.
Polarization changer described in the present embodiment is a circular metal pad, and the both side surface of the metallic gasket posts thin
Film, wherein, each film outer surface is provided with periodicity metal unit array, using aluminum, and its thickness is 600nm, described
Metal unit is a rectangle sheet metal for running through film surface, and film thickness is 10um；And it is spaced the rectangle metal
The side of thin slice is uniformly provided with row's square-shaped metal thin slice.The square-shaped metal thin slice of periodicity metal unit array is a width of
120um, a width of 121um of rectangle sheet metal, the cycle of periodicity metal unit is 503mm*272mm.
According to above-mentioned Meta Materials double-decker array structure transmission-type polarization changer structural parameters, enter using Ansoft-HFSS
Row simulation calculation, simulation model is as shown in Figure 3.The polarization changer is array structure, and overall structure size is far longer than wavelength,
The infinitely great plane of electromagnetic wave incident can be equivalent to, therefore the method encouraged using principal and subordinate border and floqent moulds is configured, and is emulated
Object is equivalent to the array structure that cellular construction infinitely repeats to constitute in the x and y direction, and now incidence wave enters along the z-axis direction
Penetrate, floqent moulds driving source sets electric field to be x directions, magnetic field is y directions, and the computational methods can be prevented effectively from computer hardware
Limitation to simulated conditions.
Centre frequency is set to 340GHz；Base material uses ultra-thin polyimides, and 10um thickness is much smaller than operation wavelength,
Dielectric constant is 3.Simulation result is as shown in Figure 4,5：
The amplitude difference and phase difference of the double-deck polarization changer of 1 two kinds of substrate thickness of table
The present invention avoids traditional simple wire grizzly bar machining accuracy problem, the choosing to transmission-type polarization changer medium substrate
Select, transmission loss is low, line circular polarisation conversion efficiency height etc..
In addition, the present invention realizes that electromagnetic wave linear polarization is changed with circular polarisation in 340GHz ± 15GHz band limits, it is ensured that
Circularly polarised wave out-of-roundness is less than 3dB, transmission loss and is less than 2dB.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (6)
1. a kind of 340GHz film-types transmit polarization changer, it is characterised in that the polarization changer is a circular metal pad
Piece, and the both side surface of the metallic gasket posts film, wherein, each film outer surface is provided with periodicity metal unit group
Into array, the periodicity metal unit is by the rectangle sheet metal (31) through film and its side along rectangle metal
Row's square-shaped metal thin slice (32) composition that thin slice (31) length direction is uniformly arranged, wherein the rectangle sheet metal
(31) space is left with row's square-shaped metal thin slice (32).
2. a kind of 340GHz film-types transmit polarization changer as claimed in claim 1, it is characterised in that the film is using Jie
Electric constant is 3 ultra-thin polyimide substrate.
3. a kind of 340GHz film-types transmit polarization changer as claimed in claim 1, it is characterised in that the thickness of the film
For 10um.
4. a kind of 340GHz film-types transmit polarization changer as claimed in claim 1, it is characterised in that the periodicity metal
The material of unit (31) array uses aluminium.
5. a kind of 340GHz film-types transmit polarization changer as claimed in claim 1, it is characterised in that the periodicity metal
The thickness of unit (31) array is 600nm.
6. a kind of 340GHz film-types transmit polarization changer as claimed in claim 1, it is characterised in that the periodicity metal
The a width of 120um of square-shaped metal thin slice of unit (31) array, a width of 121um of rectangle sheet metal, periodicity metal unit
(31) cycle is 503mm*272mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506687.XA CN107257029A (en) | 2017-06-28 | 2017-06-28 | A kind of 340GHz film-types transmit polarization changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710506687.XA CN107257029A (en) | 2017-06-28 | 2017-06-28 | A kind of 340GHz film-types transmit polarization changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107257029A true CN107257029A (en) | 2017-10-17 |
Family
ID=60024366
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710506687.XA Withdrawn CN107257029A (en) | 2017-06-28 | 2017-06-28 | A kind of 340GHz film-types transmit polarization changer |
Country Status (1)
| Country | Link |
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| CN (1) | CN107257029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449570A (en) * | 2018-10-08 | 2019-03-08 | 江苏三和欣创通信科技有限公司 | A kind of active micro-strip paster antenna of more stars of single-frequency |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658433A (en) * | 2004-12-30 | 2005-08-24 | 东南大学 | Variable-polarization microstrip reflectarray antenna |
| US20110128201A1 (en) * | 2009-11-30 | 2011-06-02 | Electronics And Telecommunications Research Institute | Circularly polarized antenna in wireless communication system and method for manufacturing the same |
| US20150022409A1 (en) * | 2013-07-18 | 2015-01-22 | Thinkom Solutions, Inc. | Dual-band dichroic polarizer and system including same |
| CN104638321A (en) * | 2015-01-24 | 2015-05-20 | 西安电子科技大学 | Polarization transformer based on multilayer frequency selection surface |
| CN106033846A (en) * | 2016-06-30 | 2016-10-19 | 浙江大学 | Polarization switching surface based on sub-wavelength harmonic structure |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
-
2017
- 2017-06-28 CN CN201710506687.XA patent/CN107257029A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1658433A (en) * | 2004-12-30 | 2005-08-24 | 东南大学 | Variable-polarization microstrip reflectarray antenna |
| US20110128201A1 (en) * | 2009-11-30 | 2011-06-02 | Electronics And Telecommunications Research Institute | Circularly polarized antenna in wireless communication system and method for manufacturing the same |
| US20150022409A1 (en) * | 2013-07-18 | 2015-01-22 | Thinkom Solutions, Inc. | Dual-band dichroic polarizer and system including same |
| CN104638321A (en) * | 2015-01-24 | 2015-05-20 | 西安电子科技大学 | Polarization transformer based on multilayer frequency selection surface |
| CN106033846A (en) * | 2016-06-30 | 2016-10-19 | 浙江大学 | Polarization switching surface based on sub-wavelength harmonic structure |
| CN106876972A (en) * | 2017-02-28 | 2017-06-20 | 山东大学 | Sub-wavelength resonance cavity circularly polarized antenna |
Non-Patent Citations (1)
| Title |
|---|
| K.M.K.H. LEONG AND W.A. SHIROMA: "Waffle-grid polariser", 《ELECTRONICS LETTERS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109449570A (en) * | 2018-10-08 | 2019-03-08 | 江苏三和欣创通信科技有限公司 | A kind of active micro-strip paster antenna of more stars of single-frequency |
| CN109449570B (en) * | 2018-10-08 | 2020-08-21 | 江苏三和欣创通信科技有限公司 | Single-frequency multi-satellite active microstrip patch antenna |
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Application publication date: 20171017 |