CN208272080U - A kind of reflective dual-layered liquid crystal phase-shifting unit - Google Patents
A kind of reflective dual-layered liquid crystal phase-shifting unit Download PDFInfo
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- CN208272080U CN208272080U CN201820959534.0U CN201820959534U CN208272080U CN 208272080 U CN208272080 U CN 208272080U CN 201820959534 U CN201820959534 U CN 201820959534U CN 208272080 U CN208272080 U CN 208272080U
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- liquid crystal
- medium substrate
- shifting unit
- crystal phase
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Abstract
The utility model discloses a kind of reflective dual-layered liquid crystal phase-shifting units that can be worked in terahertz wave band.It includes the first medium substrate from top to bottom set gradually, second medium substrate and third medium substrate, the upper surface of the third medium substrate is equipped with metal layer, it is used to form wire ground electrode, the first liquid crystal layer is marked between the first medium substrate and second medium substrate, the second liquid crystal layer is marked between the second medium substrate and metal layer, the lower surface of the first medium substrate is equipped with the first metallic micro strip structure, first metallic micro strip structure by connecting line and with it, successively connect and formed by three metal patches of orthogonal connection, the second medium substrate it is upper, lower surface is respectively equipped with corresponding with the first metallic micro strip structure second, third metallic micro strip structure.
Description
Technical field
The utility model belongs to Terahertz radar imagery field, is related to a kind of reflective dual-layered liquid crystal phase-shifting unit.
Background technique
Research of planar reflectarray antennas has simple structure, and cost is relatively low, has lower loss and higher radiation efficiency
The advantages that.The principle of reflectarray antenna is that the focusing of wave beam is realized using the phase shift function of reflector element.Reflective array day
The key of line research is the structure snd size by designing reflector element, is allowed to obtain excellent phase shift performance.Traditional micro-strip
The restriction for the factors such as reflector element needs to add phase shifter, ghost effect of these phase shifters by high band, and difficulty of processing is big,
It can only operate in W-waveband or less.And existing liquid crystal phase-shifting unit is all made of single layer liquid crystal substrate, bandwidth of operation is limited.
Utility model content
The purpose of this utility model is exactly that solve the above-mentioned problems, providing one kind can be in the anti-of terahertz wave band work
Penetrate formula dual-layered liquid crystal phase-shifting unit.
The utility model can be achieved through the following technical solutions: a kind of reflective dual-layered liquid crystal phase-shifting unit, feature exist
In: including the first medium substrate, second medium substrate and third medium substrate from top to bottom set gradually, the third medium
The upper surface of substrate is equipped with metal layer, is used to form wire ground electrode, the first medium substrate and second medium substrate it
Between be marked with the first liquid crystal layer, the second liquid crystal layer, the first medium substrate are marked between the second medium substrate and metal layer
Lower surface be equipped with the first metallic micro strip structure, the first metallic micro strip structure is by connecting line and three with its successively orthogonal connection
Metal patch connects to be formed, and the upper and lower surfaces of the second medium substrate are respectively equipped with corresponding with the first metallic micro strip structure
Second, third metallic micro strip structure.
Preferably, the metal patch is dipole patch.
Preferably, first liquid crystal layer and the second liquid crystal layer are made of nematic liquid crystalline material.
Preferably, the metal layer, metal patch and connecting line are made of copper.
Preferably, the first medium substrate and third medium substrate are made of quartz material.
Preferably, the dielectric constant of the first medium substrate and third medium substrate is 3.78, and loss tangent is
0.002。
Preferably, the second medium substrate uses doped silicon wafer.
Preferably, the dielectric constant of the second medium substrate is 11.9, loss tangent 0.00025.
Preferably, the upper and lower surfaces of first liquid crystal layer and the second liquid crystal layer are additionally provided with the polyimides for orientation
Film.
Compared with prior art, the utility model has following the utility model has the advantages that the reflective dual-layered liquid crystal phase shift of the utility model
When cell operation, voltage can be applied on metal patch by connecting line, shape is distinguished in the first liquid crystal layer and the second liquid crystal layer
At bias field, bias field makes the orientation of liquid crystal molecule generate deflection, thus change the dielectric constant of each liquid crystal layer,
So that back wave phase change, the voltage applied by changing connecting line in metal patch, and then the first liquid crystal layer of change and the
The dielectric constant of two liquid crystal layers, so that the bandwidth of operation of transposition unit is increased, in addition, the utility model also has miniaturization,
The features such as difficulty of processing is low, at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the side view of Fig. 1；
Fig. 3 is the structural schematic diagram of the first metallic micro strip structure in the utility model.
Appended drawing reference
1 is first medium substrate, and 2 be third medium substrate, and 3 be second medium substrate, and 4 be the first liquid crystal layer, and 5 be second
Liquid crystal layer, 6 be metal layer, and 7 be the first metal patch, and 8 be the second metal patch, and 9 be third metal patch, and 10 be the first connection
Line, 11 be the second connecting line, and 12 be third connecting line.
Specific embodiment
The embodiments of the present invention are described in further detail with reference to the accompanying drawing.
In the present embodiment, the orientation or position of the instructions such as term " on " "lower" " left side " " right side " " preceding " " rear " " upper end " " lower end "
Setting relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing, rather than indication or suggestion meaning
Device or element must have a particular orientation, constructed or operated with specific orientation, therefore should not be understood as practical new to this
The limitation of type.
Referring to figures 1-3, a kind of embodiment of reflective dual-layered liquid crystal phase-shifting unit, including what is from top to bottom set gradually
The upper surface of first medium substrate 1, second medium substrate 3 and third medium substrate 2, third medium substrate 2 is equipped with metal layer 6,
It is used to form wire ground electrode, the first liquid crystal layer 4, second medium are marked between first medium substrate 1 and second medium substrate 3
The second liquid crystal layer 5 is marked between substrate 3 and metal layer 6, the lower surface of first medium substrate 1 is equipped with the first metallic micro strip structure,
First metallic micro strip structure by connecting line and with it, successively connect and formed by three metal patches of orthogonal connection, second medium substrate
3 upper and lower surfaces are respectively equipped with second, third metallic micro strip structure corresponding with the first metallic micro strip structure.In the present embodiment,
First metallic micro strip structure by the first connecting line 10 and with its successively orthogonal connection three the first metal patches 7 series connection formed,
Second metallic micro strip structure by the second connecting line 11 and with its successively orthogonal connection three the second metal patches 8 series connection formed,
Third metallic micro strip structure by third connecting line 12 and with its successively orthogonal connection three third metal patches 9 series connection formed.
Preferably, metal patch is dipole patch.
Preferably, the first liquid crystal layer 4 and the second liquid crystal layer 5 are made of nematic liquid crystalline material.
Preferably, metal layer 6, metal patch and connecting line are made of copper.
Preferably, first medium substrate 1 and third medium substrate 2 are made of quartz material.
Preferably, the dielectric constant of first medium substrate 1 and third medium substrate 2 is 3.78, loss tangent 0.002.
Preferably, second medium substrate 3 uses doped silicon wafer.
Preferably, the dielectric constant of second medium substrate 3 is 11.9, loss tangent 0.00025.
Preferably, the upper and lower surfaces of the first liquid crystal layer 4 and the second liquid crystal layer 5 are additionally provided with the polyimide film for orientation.
It should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, this field
It is to be appreciated by one skilled in the art that can be with the technical solution of the present invention is modified or equivalently replaced, without de-
Objective and range from technical solutions of the utility model, should all cover in the scope of the claims of the utility model.
Claims (9)
1. a kind of reflective dual-layered liquid crystal phase-shifting unit, it is characterised in that: including the first medium base from top to bottom set gradually
The upper surface of plate, second medium substrate and third medium substrate, the third medium substrate is equipped with metal layer, is used to form metal
Grounding electrode, is marked with the first liquid crystal layer between the first medium substrate and second medium substrate, the second medium substrate and
The second liquid crystal layer is marked between metal layer, the lower surface of the first medium substrate is equipped with the first metallic micro strip structure, the first gold medal
Belonging to microstrip structure, successively three metal patches of orthogonal connection are connected and are formed by connecting line and with it, the second medium substrate
Upper and lower surfaces are respectively equipped with second, third metallic micro strip structure corresponding with the first metallic micro strip structure.
2. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: the metal patch is dipole
Sub- patch.
3. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: first liquid crystal layer and
Two liquid crystal layers are made of nematic liquid crystalline material.
4. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: the metal layer, metal patch
Piece and connecting line are made of copper.
5. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: the first medium substrate and
Third medium substrate is made of quartz material.
6. reflective dual-layered liquid crystal phase-shifting unit according to claim 5, it is characterised in that: the first medium substrate and
The dielectric constant of third medium substrate is 3.78, loss tangent 0.002.
7. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: the second medium substrate is adopted
Use doped silicon wafer.
8. reflective dual-layered liquid crystal phase-shifting unit according to claim 7, it is characterised in that: the second medium substrate
Dielectric constant is 11.9, loss tangent 0.00025.
9. reflective dual-layered liquid crystal phase-shifting unit according to claim 1, it is characterised in that: first liquid crystal layer and
The upper and lower surfaces of two liquid crystal layers are additionally provided with the polyimide film for orientation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959534.0U CN208272080U (en) | 2018-06-21 | 2018-06-21 | A kind of reflective dual-layered liquid crystal phase-shifting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820959534.0U CN208272080U (en) | 2018-06-21 | 2018-06-21 | A kind of reflective dual-layered liquid crystal phase-shifting unit |
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| CN208272080U true CN208272080U (en) | 2018-12-21 |
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| CN201820959534.0U Expired - Fee Related CN208272080U (en) | 2018-06-21 | 2018-06-21 | A kind of reflective dual-layered liquid crystal phase-shifting unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112490672A (en) * | 2020-10-30 | 2021-03-12 | 南京邮电大学 | Electric tuning antenna based on microwave liquid crystal substrate |
| WO2022089260A1 (en) * | 2020-10-27 | 2022-05-05 | 华为技术有限公司 | Antenna assembly |
-
2018
- 2018-06-21 CN CN201820959534.0U patent/CN208272080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089260A1 (en) * | 2020-10-27 | 2022-05-05 | 华为技术有限公司 | Antenna assembly |
| CN112490672A (en) * | 2020-10-30 | 2021-03-12 | 南京邮电大学 | Electric tuning antenna based on microwave liquid crystal substrate |
| CN112490672B (en) * | 2020-10-30 | 2024-04-19 | 南京邮电大学 | Electric tuning antenna based on microwave liquid crystal substrate |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181221 Termination date: 20210621 |
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| CF01 | Termination of patent right due to non-payment of annual fee |