CN108306101A - The terahertz wave band acetylene black gradually wide array antenna of variant Fractal - Google Patents

The terahertz wave band acetylene black gradually wide array antenna of variant Fractal Download PDF

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Publication number
CN108306101A
CN108306101A CN201810082625.5A CN201810082625A CN108306101A CN 108306101 A CN108306101 A CN 108306101A CN 201810082625 A CN201810082625 A CN 201810082625A CN 108306101 A CN108306101 A CN 108306101A
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wide
antenna
acetylene black
fractal
variant
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CN108306101B (en
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林斌
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Xiamen University Tan Kah Kee College
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Xiamen University Tan Kah Kee College
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/364Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
    • H01Q1/368Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor using carbon or carbon composite
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/36Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10Resonant slot antennas
    • H01Q13/106Microstrip slot antennas
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061Two dimensional planar arrays
    • H01Q21/064Two dimensional planar arrays using horn or slot aerials
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

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  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Waveguide Aerials (AREA)

Abstract

The present invention proposes a kind of terahertz wave band acetylene black gradually wide array antenna of variant Fractal, which is characterized in that including:Substrate, the antenna ground plate for being covered in substrate back and the acetylene black for being covered in the substrate front side gradually wide slot array radiation patch of variant Fractal;Antenna ground plate is full acetylene black conductive ink ground structure;The acetylene black aerial array that gradually the wide slot array radiation patch of variant Fractal is made of the wide seam miniature antenna of point shape according to rectangular array structural arrangement;It includes square outer boundary to divide the structure of the wide seam miniature antenna of shape, and, four sides of square interior border circle concentric and parallel with square outer boundary are replaced with to the wide seam inner boundary of flakes of identical 1 rank of exponent number or 2 ranks or 3 rank kock point shape lines respectively.The present invention has excellent broadband operation characteristic, and radiation intensity is higher, has good corrosion resistance, can the long-term work under outdoor open-air atmosphere, application field is better than can only encapsulate the existing terahertz wave band conventional aerial to work in a device.

Description

The terahertz wave band acetylene black gradually wide array antenna of variant Fractal
Technical field
The invention belongs to mobile terminal antenna field more particularly to a kind of terahertz wave band acetylene black gradually wide seam battle arrays of variant Fractal Array antenna.
Background technology
With the continuous development of Terahertz wave source and THz wave detection technique, THz wave has obtained more and more extensive Using.For the working frequency of THz wave between microwave and infrared band, it is 0.1~10 THz to commonly use operating frequency range (1 THz=1012Hz).THz wave has both the performance characteristics of microwave and light wave, possesses not available for many other frequency range electromagnetic waves Excellent properties.The energy of THz wave is relatively low, when for being detected to organism, will not injure detection object, being expected to Medical detection field is used widely;The frequency of THz wave is 500-1000 times of microwave, and band width is very big, can be taken THz wave is used for the communications field, it will so that transmission speed is crossed over major step forward, make development communication technologies by band bulk information Step the new step of last layer;THz wave has fabulous penetrability, has good perspective imaging to imitate nonpolar liquid Fruit can be played a significant role based on the imaging technique of THz wave in field of safety check;The photon energy of THz wave is about 4.14 mcV, 98% photon energy launched during Big Bang are all located at the frequency range of Terahertz, Terahertz Wave will be major electromagnetic wave that the following interplanetary probe uses.
Terahertz wave band equipment be unable to do without the terahertz wave band antenna as THz wave transmitter-receiver device.It is existing too Hertz equipment is for the performance requirement of terahertz wave band antenna:Can be in terahertz wave band broadband operation, absolutely work band It is wider than 0.1 THz, opposite bandwidth of operation is more than 10%, and for operating center frequency near 1 THz, radiation intensity is higher, echo damage The minimum value of consumption is less than -20 dB, can ensure the transmission matter of terahertz electromagnetic wave in various unpredictable electromagnetic environments Amount.
Invention content
In view of the shortcomings of the prior art and blank, present invention aims at one kind is provided can be wide in terahertz wave band Band operation, absolute bandwidth of operation are more than 0.1 THz, and opposite bandwidth of operation is more than 10%, operating center frequency near 1 THz, Radiation intensity is higher, and the minimum value of return loss is less than the new Antenna Construction Design of -20 dB, specifically uses following technical side Case:
A kind of terahertz wave band acetylene black gradually wide array antenna of variant Fractal, which is characterized in that including:Substrate is covered in substrate The antenna ground plate at the back side and it is covered in the acetylene black of the substrate front side gradually wide slot array radiation patch of variant Fractal;The antenna ground Plate is full acetylene black conductive ink ground structure;Gradually the wide slot array radiation patch of variant Fractal is small by the wide seam of point shape to the acetylene black The aerial array that antenna is formed according to rectangular array structural arrangement;The structure of the wide seam miniature antenna of described point of shape includes square outside Boundary, and, four sides of square interior border circle concentric and parallel with square outer boundary are replaced with into identical 1 rank of exponent number respectively Or 2 rank or 3 rank kocks divide the flakes of shape line wide seam inner boundary.
Preferably, described that the size of the wide seam miniature antenna of shape is divided to be 45 μm of 45 μm ± 1 μm of ± 1 μ ms.
Preferably, the length of side of the square outer boundary is 45 μm ± 1 μm;The size of the wide seam inner boundary of the flakes is 42.6μm±0.1μm×42.6μm±0.1μm。
Preferably, the acetylene black gradually the wide slot array radiation patch of variant Fractal aerial array include 5 rows, wherein the 1st row Shape line, the 2nd row and the 4th row is divided to divide shape wide seam using 1 rank kock with the wide seam inner boundary of flakes of the wide seam miniature antenna of the 5th row point shape The wide seam inner boundary of flakes of miniature antenna divides shape line, the 3rd row to divide the wide seam inner edge of flakes of the wide seam miniature antenna of shape using 2 rank kocks Boundary divides shape line using 3 rank kocks.
Preferably, the acetylene black gradually the wide slot array radiation patch of variant Fractal by the wide seam miniature antenna of 20 points of shapes according to 5 rows 4 Row rectangular array structural arrangement forms.
Preferably, gradually the wide slot array radiation patch of variant Fractal includes at least 5 row, 4 Lie Gong20Ge array elements area to the acetylene black The size in domain, each array element region is 50 μm of 50 μm ± 1 μm of ± 1 μ ms, and a centrally disposed point of shape in each array element region is wide Stitch miniature antenna.
Preferably, each bottom edge center for dividing the wide seam miniature antenna of shape is equipped with distributing point.
Preferably, the substrate is low-loss terahertz wave band wave transparent ceramic substrate, and relative dielectric constant is 20 ± 3.
Preferably, the shape of the substrate be rectangle, size be 200 μm of 250 μm ± 1 μm of ± 1 μ ms, thickness be 10 μm ± 1μm。
Preferably, the antenna ground plate and acetylene black gradually the wide slot array radiation patch of variant Fractal by acetylene black conductive ink It prints.
Point wide seam antenna of shape is to output the wide seam of point shape snowflake at quadrant antenna radiation patch center to obtain, and divides shape snowflake Four edges along shape be identical exponent number fractal structure.It is fractal structure to divide the gap edge of the wide seam antenna of shape, is had from phase Like property, radio-frequency current is very uniform in inner antenna distribution, and antenna has good broadband operation characteristic.
In related art scheme of the present invention, individually divide the bandwidth of operation of the wide seam antenna of shape larger, but radiation intensity is not It is high.Using the wide seam antenna of shape is divided as array-element antenna, after rectangular array structure composition aerial array, the multiple points of wide seams of shape The radiation of antenna is superimposed, and can effectively improve the radiation intensity of antenna.If allowing the wide seam antenna of point shape of each row in aerial array The exponent number of the fractal structure used gradually changes, and the working frequency of the wide seam antenna of point shape of each row also gradually changes therewith, multirow The radiation for dividing the wide seam antenna of shape of different operating frequency is superimposed, can form that a radiation intensity is higher, bandwidth of operation is larger Working frequency range.
Acetylene black is processed by acetylene through Pintsch process, and chemical property stability is high, has good surface-active Very high conductivity.The conductive effect of acetylene black conductive ink is preferable, and metal is free of in ink, has in outdoor application Good corrosion resistance.
The present invention is made using the self-similarity of fractal structure in array-element antenna using dividing the wide seam antenna of shape as array-element antenna Portion's homogeneous current distribution ensure that antenna has broadband operation characteristic;Using rectangular array structure group battle array, effectively raise The radiation intensity of antenna;The exponent number for the fractal structure that the wide seam antenna of point shape of each row uses in aerial array gradually changes, each row Point shape it is wide seam antenna working frequency gradually change and be overlapped mutually, further broadened the working band of antenna.Use change It learns the very stable acetylene black conductive ink of property and makes antenna ground plate and radiation patch, it is preferable anticorrosive to ensure that antenna has Property, the service life of antenna is extended, antenna is allowed to have the ability of outdoor outdoor work.
Measured result shows that the operating center frequency for the antenna that preferred embodiment of the present invention provides is 0.982 THz, echo damage Consumption minimum value is -48.21 dB, and antenna operating band ranging from 0.542~1.438 THz, absolute bandwidth of operation is 0.896 THz, opposite bandwidth of operation are 90.51%, and the performance requirements antenna for showing that existing Terahertz equipment proposed can expire Foot.
Compared with the conventional aerial for terahertz wave band:The antenna of this kind design has excellent broadband operation special Property, bandwidth of operation reaches 0.896 THz, and the bandwidth of operation of remote super existing 0.1 THz of terahertz wave band conventional aerial is horizontal;This kind The aerial radiation intensity of design is higher, and return loss minimum value is down to -48.21 dB, remote super existing terahertz wave band conventional aerial The performance level of -20 dB of return loss minimum value.The antenna of this kind design makes earth plate and spoke using acetylene black conductive ink Penetrate patch, there is good corrosion resistance, can the long-term work under outdoor open-air atmosphere, application field is better than can only be encapsulated in The existing terahertz wave band conventional aerial to work in equipment.
Description of the drawings
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
Fig. 1 is that 1 rank, 2 ranks, 3 rank kocks divide the structural schematic diagram of shape line;
Fig. 2 be the embodiment of the present invention in flakes it is wide seam inner boundary using 1 rank, 2 ranks, 3 rank kock point shape lines divide shape it is wide seam it is small Antenna structure view;
Fig. 3 is the acetylene black gradually wide slot array radiation patch structural schematic diagram of variant Fractal in the embodiment of the present invention;
Fig. 4 is that antenna return loss schematic diagram is surveyed in the embodiment of the present invention.
Specific implementation mode
For the feature and advantage of this patent can be clearer and more comprehensible, special embodiment below is described in detail below:
The embodiment of the present invention includes:Substrate, the antenna ground plate for being covered in substrate back and the acetylene black for being covered in substrate front side The gradually wide slot array radiation patch of variant Fractal;Antenna ground plate is the full acetylene black conductive ink made of acetylene black printing conductive ink Water ground structure;Gradually the wide slot array radiation patch of variant Fractal is also to be formed by acetylene black printing conductive ink to acetylene black;Acetylene black The aerial array that gradually the wide slot array radiation patch of variant Fractal is made of the wide seam miniature antenna of point shape according to rectangular array structural arrangement; It includes square outer boundary to divide the structure of the wide seam miniature antenna of shape, and, by the square concentric and parallel with square outer boundary Four sides of inner boundary replace with the wide seam inner boundary of flakes of identical 1 rank of exponent number or 2 ranks or 3 rank kock point shape lines respectively, such as Shown in Fig. 2.
As shown in Figure 1, kock point shape is a kind of line fractal structure, wherein the kock fractal law to line is:Initial element is One section of straightway(0 rank), it is divided into three sections of small line segments, it is intermediate one section small line segment length is identical, at 60 degree of angles Two sections small line segment substitutes, and can obtain 1 rank kock point shape line;Similar replacement is done to every straightway of 1 rank kock point shape line, It can obtain 2 rank kock point shape lines;It is iteratively substituted always in this way, high-order kock point shape line can be obtained.
In the present embodiment, it is 45 μm of 45 μm ± 1 μm of ± 1 μ ms to divide the size of the wide seam miniature antenna of shape, wherein square is outer The length of side on boundary is 45 μm ± 1 μm;The size of the wide seam inner boundary of flakes is 42.6 μm of 42.6 μm ± 0.1 μm of ± 0.1 μ ms.
In the present embodiment, gradually the wide slot array radiation patch of variant Fractal uses rectangular array structure to be arranged as basic array to acetylene black Cloth structure.
The single bandwidth of operation for dividing the wide seam miniature antenna of shape is larger, but radiation intensity is difficult to reach requirement.Use rectangle battle array After array structure group battle array, the radiation superposition of the wide seam miniature antenna of multiple points of shapes can effectively improve the radiation intensity of antenna.
As shown in figure 3, gradually the wide slot array radiation patch of variant Fractal includes that 5 rows 4 arrange totally 20 array element regions to acetylene black, each The size in array element region is 50 μm of 50 μm ± 1 μm of ± 1 μ ms, the wide small day of seam of a centrally disposed point of shape in each array element region Line;The wide seam miniature antenna of 20 points of shapes is according to 5 row, 4 row rectangular array structural arrangement.Wherein the 1st row and the 5th row divide shape the wide small day of seam The wide seam inner boundary of flakes of line divides shape line, the 2nd row and the 4th row to divide the wide seam of flakes of the wide seam miniature antenna of shape using 1 rank kock Inner boundary divides shape line, the wide seam inner boundary of flakes of the wide seam miniature antenna of the 3rd row point shape to divide shape using 3 rank kocks using 2 rank kocks Line.
It is fractal structure to divide the gap edge of the wide seam miniature antenna of shape, has self-similarity, radio-frequency current is in inner antenna point Cloth is very uniform, and antenna has good broadband operation characteristic.Acetylene black is gradually in the wide slot array radiation patch of variant Fractal, each row The exponent number for the kock fractal structure that the wide seam miniature antenna of point shape uses gradually changes, the working frequency for dividing the wide seam miniature antenna of shape of each row Also it gradually changes therewith, the radiation for dividing the wide seam miniature antenna of shape of multirow different operating frequency is superimposed, can form a radiation The working frequency range that intensity is higher, bandwidth of operation is larger.
Wherein, the bottom edge center of the wide seam miniature antenna of shape is each divided to be equipped with distributing point.
In the present embodiment, substrate is low-loss terahertz wave band wave transparent ceramic substrate, and relative dielectric constant is 20 ± 3.
The shape of substrate is rectangle, and size is 200 μm of 250 μm ± 1 μm of ± 1 μ ms, and thickness is 10 μm ± 1 μm.
As shown in figure 4, providing the return loss (S of structure respective antenna of the embodiment of the present invention11) performance map, measured result The operating center frequency of display, the antenna is 0.982 THz, and return loss minimum value is -48.21 dB, antenna operating band model It encloses for 0.542~1.438 THz, absolute bandwidth of operation is 0.896 THz, and opposite bandwidth of operation is 90.51%, can be in terahertz Hereby wave band broadband operation, absolute bandwidth of operation are much larger than 0.1 THz, and opposite bandwidth of operation is much larger than 10%, and return loss is most Small value is much smaller than -20 dB, has larger performance redundancy, can fully meet existing Terahertz equipment for terahertz wave band The performance requirement of antenna has broad application prospects in THz wave transmission and process field.
This patent is not limited to above-mentioned preferred forms, anyone can obtain other each under the enlightenment of this patent The terahertz wave band acetylene black of kind of the form gradually wide array antenna of variant Fractal, all equalizations done according to scope of the present invention patent Variation and modification, should all belong to the covering scope of this patent.

Claims (10)

1. a kind of terahertz wave band acetylene black gradually wide array antenna of variant Fractal, which is characterized in that including:Substrate is covered in base The antenna ground plate of back and it is covered in the acetylene black of the substrate front side gradually wide slot array radiation patch of variant Fractal;The antenna connects Floor is full acetylene black conductive ink ground structure;Gradually the wide slot array radiation patch of variant Fractal is by the wide seam of point shape to the acetylene black The aerial array that miniature antenna is formed according to rectangular array structural arrangement;The structure of the wide seam miniature antenna of described point of shape includes that square is outer Boundary, and, four sides of square interior border circle concentric and parallel with square outer boundary are replaced with into exponent number identical 1 respectively Rank or 2 ranks or 3 rank kocks divide the flakes of shape line wide seam inner boundary.
2. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described It is 45 μm of 45 μm ± 1 μm of ± 1 μ ms to divide the size of the wide seam miniature antenna of shape.
3. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described The length of side of square outer boundary is 45 μm ± 1 μm;The size of the wide seam inner boundary of flakes is 42.6 μm of ± 0.1 μ ms 42.6 μm±0.1μm。
4. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described The aerial array of the acetylene black gradually wide slot array radiation patch of variant Fractal includes 5 rows, wherein the 1st row and the 5th row divide the wide seam of shape small day The wide seam inner boundary of flakes of line divides shape line, the 2nd row and the 4th row to divide the wide seam of flakes of the wide seam miniature antenna of shape using 1 rank kock Inner boundary divides shape line, the wide seam inner boundary of flakes of the wide seam miniature antenna of the 3rd row point shape to divide shape using 3 rank kocks using 2 rank kocks Line.
5. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described Acetylene black gradually the wide slot array radiation patch of variant Fractal by the wide seam miniature antenna of 20 points of shapes according to 5 row, 4 row rectangular array structural arrangement Composition.
6. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described Gradually the wide slot array radiation patch of variant Fractal includes at least 5 rows 4 row totally 20 array element regions, the size in each array element region to acetylene black For 50 μm of 50 μm ± 1 μm of ± 1 μ ms, the centrally disposed wide seam miniature antenna of a point of shape in each array element region.
7. the terahertz wave band acetylene black according to claim 1 gradually wide array antenna of variant Fractal, it is characterised in that:It is described Each bottom edge center for dividing the wide seam miniature antenna of shape is equipped with distributing point.
8. terahertz wave band acetylene black according to the claim 1-7 any of which gradually wide array antenna of variant Fractal, special Sign is:The substrate is low-loss terahertz wave band wave transparent ceramic substrate, and relative dielectric constant is 20 ± 3.
9. terahertz wave band acetylene black according to the claim 1-7 any of which gradually wide array antenna of variant Fractal, special Sign is:The shape of the substrate is rectangle, and size is 200 μm of 250 μm ± 1 μm of ± 1 μ ms, and thickness is 10 μm ± 1 μm.
10. terahertz wave band acetylene black according to the claim 1-7 any of which gradually wide array antenna of variant Fractal, special Sign is:The antenna ground plate and acetylene black gradually the wide slot array radiation patch of variant Fractal by acetylene black printing conductive ink and At.
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CN109239787A (en) * 2018-09-19 2019-01-18 天津大学 A kind of terahertz wave detector based on array plaster antenna
CN109728434A (en) * 2019-01-24 2019-05-07 厦门大学嘉庚学院 The more gap Fractal array ultra-wide band antennas of diamond shape
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Publication number Priority date Publication date Assignee Title
CN108306101B (en) * 2018-01-29 2023-12-22 厦门大学嘉庚学院 Terahertz wave band acetylene black gradual change fractal wide-slit array antenna
CN109239787A (en) * 2018-09-19 2019-01-18 天津大学 A kind of terahertz wave detector based on array plaster antenna
CN109728434A (en) * 2019-01-24 2019-05-07 厦门大学嘉庚学院 The more gap Fractal array ultra-wide band antennas of diamond shape
CN109728432A (en) * 2019-01-24 2019-05-07 厦门大学嘉庚学院 The rectangular gap Fractal array ultra-wide band antenna of gradual change
CN109728434B (en) * 2019-01-24 2020-12-25 厦门大学嘉庚学院 Rhombus multi-gap fractal array ultra-wideband antenna
CN109728432B (en) * 2019-01-24 2021-01-29 厦门大学嘉庚学院 Gradual change square gap fractal array ultra wide band antenna
CN110571534A (en) * 2019-09-30 2019-12-13 厦门大学嘉庚学院 Terahertz waveband triple photonic crystal fractal slot array antenna
CN110571536A (en) * 2019-09-30 2019-12-13 厦门大学嘉庚学院 Terahertz wave band gradual change defect patch fractal array antenna
CN110571536B (en) * 2019-09-30 2021-01-29 厦门大学嘉庚学院 Terahertz wave band gradual change defect patch fractal array antenna
CN110571534B (en) * 2019-09-30 2021-01-29 厦门大学嘉庚学院 Terahertz waveband triple photonic crystal fractal slot array antenna

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