CN109462035A - A kind of small Huygens's source antenna of two-band electricity of cross polarization - Google Patents
A kind of small Huygens's source antenna of two-band electricity of cross polarization Download PDFInfo
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- CN109462035A CN109462035A CN201811194938.6A CN201811194938A CN109462035A CN 109462035 A CN109462035 A CN 109462035A CN 201811194938 A CN201811194938 A CN 201811194938A CN 109462035 A CN109462035 A CN 109462035A
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- medium substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/10—Resonant antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a kind of small Huygens's source antennas of the two-band of cross polarization electricity, belong to antenna technical field.The antenna is made of the first to three medium substrate, high-frequency/low-frequency section magnetic dipole, high frequency/low section of section electric dipole, solid copper pin, rectangular channel, driving source;Three layers of medium substrate are parallel to each other and are separated from each other;High frequency magnetic dipole is attached at the upper surface of first and third medium substrate along X-axis;High frequency electric dipole is attached at the upper surface of second medium substrate along X-axis;Low frequency magnetic dipole is attached at the upper and lower surface of first medium substrate and the upper surface of third medium substrate along Y-axis;Low frequency electric dipole is attached at the upper and lower surface of second medium substrate along Y-axis;Rectangular channel is attached on low frequency magnetic dipole;Driving source is attached at the lower surface of third medium substrate.For the present invention under the premise of electricity small, low section, rectangular channel is added in low frequency magnetic dipole reduces influencing each other between the magnetic dipoles of two frequency ranges, to realize good broad beam.
Description
Technical field
The invention belongs to antenna technical fields, are related to a kind of small Huygens's source antenna of two-band electricity of cross polarization.
Background technique
Miniaturization and high-performance are always eternally immutable in antenna development history pursue a goal.Thus, over half a century with
Come, electronically small antenna is just studied and explored extensively because of its compact structure.In the high-performance designs for pursuing electronically small antenna,
Huygens source antenna is concerned with its inherent high directivity and broad beam characteristic.On the other hand, with modern nothing
Line communication equipment develops towards integrated, multifunction direction, and antenna is inevitably required to have smaller size and more
Functionality, therefore develop multiband technology on the basis of electric small Huygens's source antenna is that meet wireless communication system multi-functional
One of effective ways of change and the size that can effectively reduce wireless telecom equipment.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of small Huygens's source antenna of the two-band of cross polarization electricity,
Under the premise of electric small-size, low section, rectangular channel, which is added, in low-frequency range magnetic dipole reduces the magnetic dipole of two frequency ranges
Between influence each other, to realize the Huygens source radiation mode of two frequency ranges and radiation direction along+Z axis.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of small Huygens's source antenna of two-band electricity of cross polarization, including first medium substrate, second medium substrate, the
Three medium substrates, metal column, high band magnetic dipole, high band electric dipole, low-frequency range magnetic dipole, low-frequency range eelctric dipole
Son, rectangular channel, driving source and nylon leg portion;
The second medium substrate is located at the lower section of first medium substrate, and first medium substrate-parallel and is separated from each other;
The third medium substrate is located at the lower section of second medium substrate, and second medium substrate-parallel and is separated from each other;The high frequency
Section magnetic dipole is attached at the upper surface of first medium substrate and third medium substrate along X-axis and is connected by two solid copper pins
It connects;The high band electric dipole is attached at the upper surface of second medium substrate along X-axis;The low-frequency range magnetic dipole is along Y-axis
The upper and lower surface for being attached at first medium substrate is connected with the upper surface of third medium substrate and by two solid copper pins, and first
The metal band for ending substrate upper and lower surface passes through two metallization VIA connections;The low-frequency range electric dipole is sticked along Y-axis
Pass through two metallization VIA connections in the metal band of the upper and lower surface of second medium substrate, upper and lower surface;Described two pairs
Magnetic dipole and electric dipole are mutually perpendicular to;The rectangular channel is attached on low-frequency range magnetic dipole, is located at first medium substrate
Lower surface;The driving source is attached at the lower surface of third medium substrate, can motivate high band magnetic dipole and low simultaneously
Frequency range magnetic dipole;The nylon pillar is used to fix the relative altitude of three medium substrates.
Further, described first is that Tai Kang stands TLY-5, relative dielectric constant 2.2, loss to third medium substrate material
Angle is just cut to 0.0009, and three layers of medium substrate are the circular configuration of radius 39mm, and thickness is 0.51mm.
Further, the vertical height of the first medium substrate to third medium substrate is 7.4mm~7.6mm, and second is situated between
The vertical height of matter substrate to third medium substrate is 5.4mm~5.6mm.
Further, the length L3 of the metal band (12) is 40mm~41mm, and width W1 is 3mm~5mm;It is described solid
The height h5 of copper post (4) is 7mm~8mm, and radius R2 is 1mm~1.5mm;The length L12 of described two metal bands (31,32)
For 16mm~17mm, the spacing g4 between them is 7.5mm~8.5mm;The length L7 of " I " the type dipole (21) is 49mm
~51mm, width W4 are 0.7mm~1.2mm.
Further, the length L2 of the metal band (13,14) is 19mm~20mm, and width W1 is 3mm~5mm;It is described
The length L4 of metal band (15) is 24mm~26mm;The length L11 of described two metal bands (33,34) be 23mm~
25mm, the spacing g3 between them are 7mm~8mm;The length L6 of metal band (22,23) is 27mm~30mm, and width W3 is
0.3mm~0.8mm;The length L10 of the metal band (24) is 19mm~21mm.
Further, the length L5 of described two slot structures (16) is 6mm~8mm, and width W2 is 0.5mm~1.5mm.
Further, the length L14 of the metal band (35,36) is 5mm~7mm, and width W5 is 0.5mm~1.5mm;Institute
The length L13 for stating metal band (37,38) is 7mm~9mm.
Further, the magnetic dipole (5,7), electric dipole (6,8), rectangular channel (9) and driving source (10) are thickness
Spend it is identical cover Copper thin film, with a thickness of 0.017mm.
The beneficial effects of the present invention are: 1) present invention using near field spurious resonance technology keep the antenna structure compact, ruler
It is very little small, it is readily integrated into wireless telecommunication system;2) present invention is reduced by the way that rectangular channel is added in low-frequency range magnetic dipole
Influencing each other between the magnetic dipole of two frequency ranges, to realize the Huygens source radiation mode and radiation direction of two frequency ranges
Along+Z axis.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is the 3-D view of antenna structure of the present invention;
Fig. 2 is the side view of antenna structure of the present invention;
Fig. 3 is the high band and low-frequency range magnetic dipole of first medium upper surface of base plate of the present invention, first medium base
The low-frequency range magnetic dipole and rectangular channel of plate lower surface;
Fig. 4 is the high band and low-frequency range electric dipole of second medium upper surface of base plate of the present invention, second medium base
The low-frequency range electric dipole of plate lower surface;
Fig. 5 is metal band on the magnetic dipole and lower surface driving source of third medium substrate of the present invention upper surface;
Fig. 6 is antenna reflection coefficient of the present invention | S11| and the graph of relation of frequency;
Antenna E plane, H planar radiation field pattern when Fig. 7 is antenna low-frequency range of the present invention;
Antenna E plane, H planar radiation field pattern when Fig. 8 is antenna high band of the present invention;
Each appended drawing reference in attached drawing is respectively as follows: 1- first medium substrate, 2- second medium substrate, 3- third medium base
Plate, 4- solid copper pin, 5- high band magnetic dipole, 6- high band electric dipole, 7- low-frequency range magnetic dipole, 8- low-frequency range galvanic couple
It is extremely sub, 9- rectangular channel, 10- driving source, 11- nylon pillar, 12,13,14,15- metal band, 16- slot structure, 21- " I " type idol
It is extremely sub, 22,23,24- metal band, 31,32,33,34,35,36,37,38- metal band.
Specific embodiment
Below in conjunction with attached drawing, present invention is further described in detail.
As illustrated in fig. 1 and 2, the present invention provides a kind of small Huygens's source antenna of two-band electricity of cross polarization by first medium
Substrate (1), second medium substrate (2), third medium substrate (3), high band magnetic dipole (5), high band electric dipole (6),
Low-frequency range magnetic dipole (7), low-frequency range electric dipole (8), rectangular channel (9), driving source (10) and nylon pillar (11) composition;Institute
State the lower section that second medium substrate (2) is located at first medium substrate (1), it is parallel with first medium substrate (1) and be separated from each other;Institute
State the lower section that third medium substrate (3) is located at second medium substrate (2), it is parallel with second medium substrate (2) and be separated from each other;Institute
High band magnetic dipole (5) is stated to be attached at the upper surface of first medium substrate (1) and third medium substrate (3) along X-axis and pass through
Two solid copper pin (4) connections;The high band electric dipole (6) is attached at the upper surface of second medium substrate (2) along X-axis;
The low-frequency range magnetic dipole (7) is attached at the upper and lower surface and third medium substrate (3) of first medium substrate (1) along Y-axis
Upper surface is simultaneously connected by two solid copper pins (4), and the metal band of first cut-off substrate (1) upper and lower surface passes through two metals
Change via hole connection;The low-frequency range electric dipole (8) is attached at the upper and lower surface of second medium substrate (2) along Y-axis, thereon following table
The metal band in face passes through two metallization VIA connections;The rectangular channel (9) is attached on low-frequency range magnetic dipole, is located at the
The lower surface of one medium substrate (1);The driving source (10) is attached at the lower surface of third medium substrate (3), can motivate simultaneously
Play high band magnetic dipole (5) and low-frequency range magnetic dipole (7);The nylon pillar (11) is used to fix three medium bases
The relative altitude of plate.
As shown in Figures 3 and 5, high band magnetic dipole (5) is by metal band (12), two solid copper pins (4) and two gold
Belong to band (31,32) composition;The metal band (12) is attached at the upper surface of first medium substrate along X-axis;Described two gold
Belong to band (31,32) and is attached at the upper surface of third medium substrate along X-axis;The metal band (12) and two metal bands
(31,32) by two solid copper pin (4) connections, to form ring current;Low-frequency range magnetic dipole (7) is by metal band
(13,14,15), two solid copper pins (4) and two metal band (33,34) compositions;The metal band (13,14) is along Y-axis
It is attached at the upper surface of first medium substrate;The metal band (15) is attached at the lower surface of first medium substrate along Y-axis;Institute
It states two metal bands (33,34) and is attached at the upper surface of third medium substrate along Y-axis;The metal band (13,14,15) and
Two metal bands (33,34) are by two solid copper pin (4) connections, to form ring current.
As shown in figure 3, rectangular channel is made of two slot structures (16);Described two slot structures (16) are attached at low-frequency range magnetic
On dipole (7), it is located at the lower surface of first medium substrate (1).
As shown in figure 4, high band electric dipole (6) is made of " I " type dipole (21), " I " the type dipole (21)
The upper surface of second medium substrate is attached at along X-axis;Low-frequency range electric dipole (8) is made of metal band (22,23,24), institute
It states metal band (22,23) and is attached at the upper surface of second medium substrate along Y-axis, the metal band (24) is attached at second Jie
The lower surface of matter substrate.
As shown in figure 5, driving source (10) is made of four metal bands (35,36,37,38);The metal band (35,
36) it is connected with each other and is attached at the lower surface of third medium substrate (3) and is connected with the outer conductor of coaxial cable;The metal band
(37,38) it is connected with each other and is attached at the lower surface of third medium substrate (3) and is connected with the inner conductor of coaxial cable.
The present invention provides a specific implementation case, medium substrate has selected Tai Kang to found TLY-5, and relative dielectric constant is
2.2, loss angle tangent 0.0009, three layers of medium substrate are the circular configuration of radius 39mm, and thickness is 0.51mm.First
The vertical height of medium substrate 1 to third medium substrate 3 is 7.5mm, and second medium substrate 2 arrives the vertical of third medium substrate 3
Height is 5.5mm.The length L3 of metal band 12 is 40.3mm, and width W1 is 4mm;The height h5 of the solid copper pin 4 is
7.5mm, radius R2 are 1.25mm;The length L12 of described two metal bands 31,32 is 16.3mm, the spacing g4 between them
For 7.7mm;The length L7 of " I " the type dipole 21 is 50.88mm, and width W4 is 0.905mm.The length of metal band 13,14
Degree L2 is 19.25mm, and width W1 is 4mm;The length L4 of the metal band 15 is 25mm;Described two metal bands 33,34
Length L11 be 24mm, spacing g3 between them is 7.5mm;The length L6 of metal band 22,23 is 28.95mm, width W3
For 0.5mm;The length L10 of the metal band 24 is 20mm.The length L5 of two slot structures 16 is 7mm, and width W2 is 1mm.
The length L14 of metal band 35,36 is 6mm, and width W5 is 1mm;The length L13 of the metal band 37,38 is 8mm.
After completing above-mentioned initial designs, simulation analysis is carried out using high-frequency electromagnetic simulation software HFSS 16.0, by imitative
Each parameter optimum size after true optimization is as shown in table 1, in which: R1 represents the radius of three layers of medium substrate, and R2 represents solid
The radius of copper post 4, R3 represent the radius of metallization VIA on low-frequency range magnetic dipole, and L2 represents the length of metal band 13,14,
W1 represents the width of metal band 12,13,14,15, and L3 represents the length of metal band 12, and L4 represents the length of metal band 15
Degree, L5 represent the length of metal band 16, and W2 represents the width of metal band 16, g1 represent solid copper pin 4 from metal band 12,
13, the distance at 14 edges, g2 represent metallization VIA with a distance from metal band 13,14 edges, and L6 represents metal band 22,23
Length, W3 represents the width of metal band 22,23,24, and L7 represents the length of metal band 21, and W4 represents metal band 21
Length, R4 represent the inside radius of the copper ring on " I " type dipole 21,22,23, and R5 is represented on " I " type dipole 21,22,23
The outer radius of copper ring, R6 represent the radius of metallization VIA on low-frequency range electric dipole, and L8 represents " I " type dipole 21,22,23
Vertical minor matters length, L9 represent " I " type dipole 21,22,23 lateral minor matters length, W5 represent " I " type dipole 21,
22, the width of 23 minor matters, L10 represent the length of metal band 24, and L11 represents the length of metal band 33,34, and g3 represents gold
Belong to the spacing between band 33,34, L12 represents the length of metal band 31,32, between g4 is represented between metal band 31,32
Represent the length of metal band 37,38 away from, L13, L14 represents the length of metal band 35,36, W5 represent metal band 35,36,
37,38 width.
1 each parameter optimum size table of the present invention of table
Reflection according to above-mentioned parameter, using HFSS to the small Huygens's source antenna of two-band electricity of designed cross polarization
Coefficient | S11|, the performance parameters such as directional diagram radiation gain carry out simulation analysis, and analysis result is as follows:
Fig. 6 is reflection coefficient of the invention | S11| curve graph, as shown, the resonance point of this antenna is respectively 1.202GHz
And 1.518GHz, corresponding low-frequency range impedance bandwidth be 1.198~1.206GHz, high band impedance bandwidth be 1.513~
1.523GHz。
Fig. 7 be this antenna face E and the face H at 1.202GHz resonance point antenna pattern, can be obtained from figure, it can be achieved that
Than being respectively 2.35dBi and 15.2dB, cross polarization ratio is -28.4dB for gain and front and back.The 3dB beam angle in the face E is 128 °,
The 3dB beam angle in the face H is 142 °.Fig. 8 is the antenna pattern in this antenna face E and the face H at 1.518GHz resonance point, from figure
In can show that cross polarization ratio is -20.7dB, it can be achieved that gain and front and back are than being respectively 2.89dBi and 11.3dB.The 3dB in the face E
Beam angle is 129 °, and the 3dB beam angle in the face H is 151 °.For simulation result, the ka=0.98 of this antenna, section height
Degree is 0.032 λ0。
In conclusion simulation results show the reasonability of this Antenna Design, by being added in low-frequency range magnetic dipole
Rectangular channel reduces influencing each other between the magnetic dipole of two frequency ranges, to realize the Huygens source radiation mode of two frequency ranges
Formula and radiation direction is along+Z axis.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (7)
1. a kind of small Huygens's source antenna of two-band electricity of cross polarization, it is characterised in that: the antenna is by first medium substrate, and the
Second medium substrate, third medium substrate, solid copper pin, high band magnetic dipole, high band electric dipole, low-frequency range magnetic dipole
Son, low-frequency range electric dipole, rectangular channel, driving source and nylon leg portion;
The second medium substrate is located at the lower section of first medium substrate, and first medium substrate-parallel and is separated from each other;It is described
Third medium substrate is located at the lower section of second medium substrate, and second medium substrate-parallel and is separated from each other;The high band magnetic
Dipole is attached at first medium substrate with the upper surface of third medium substrate along X-axis and is connected by two solid copper pins;Institute
State the upper surface that high band electric dipole is attached at second medium substrate along X-axis;The low-frequency range magnetic dipole is attached at along Y-axis
The upper and lower surface of first medium substrate is connected with the upper surface of third medium substrate and by two solid copper pins, the first cut-off base
The metal band of plate upper and lower surface passes through two metallization VIA connections;The low-frequency range electric dipole is attached at second along Y-axis
The metal band of the upper and lower surface of medium substrate, upper and lower surface passes through two metallization VIA connections;Two pairs of magnetic dipoles
Son and electric dipole are mutually perpendicular to;The rectangular channel is attached on low-frequency range magnetic dipole, positioned at the following table of first medium substrate
Face;The driving source is attached at the lower surface of third medium substrate, can motivate high band magnetic dipole and low-frequency range magnetic simultaneously
Dipole;The nylon pillar is used to fix the relative altitude of three medium substrates.
2. a kind of small Huygens's source antenna of two-band electricity of vertical polarization according to claim 1, it is characterised in that: described
High band magnetic dipole is made of metal band, two solid copper pins and two metal bands;The metal band is sticked along X-axis
In the upper surface of first medium substrate;Described two metal bands are attached at the upper surface of third medium substrate along X-axis;The gold
Belong to band and two metal bands by two solid copper pin connections, to form ring current.The high band electric dipole
By " I " type dipole triads at " I " the type dipole is attached at the upper surface of second medium substrate along X-axis.
3. a kind of small Huygens's source antenna of two-band electricity of vertical polarization according to claim 1, it is characterised in that: described
Low-frequency range magnetic dipole is made of metal band, two solid copper pins and two metal bands;The metal band is sticked along Y-axis
In the upper surface of first medium substrate;The metal band is attached at the lower surface of first medium substrate along Y-axis;Described two gold
Belong to the upper surface that band is attached at third medium substrate along Y-axis;The metal band and two metal bands are solid by two
Copper post connection, to form ring current;The metal band is connected with metal band by two metallization VIAs;It is described low
Frequency range electric dipole is made of metal band, and the metal band is attached at the upper surface of second medium substrate, the gold along Y-axis
Belong to the lower surface that tape is set to second medium substrate.
4. a kind of small Huygens's source antenna of two-band electricity of vertical polarization according to claim 1, it is characterised in that: described
High band magnetic dipole and low-frequency range magnetic dipole are mutually perpendicular to;The high band electric dipole and low-frequency range electric dipole are mutual
Vertically.
5. a kind of small Huygens's source antenna of two-band electricity of vertical polarization according to claim 1, it is characterised in that: described
Rectangular channel is made of two slot structures;Described two slot structures are attached on low-frequency range magnetic dipole, are located at first medium substrate
Lower surface.
6. a kind of small Huygens's source antenna of two-band electricity of vertical polarization according to claim 1, which is characterized in that described
Driving source is made of four metal bands;The metal band be connected with each other the lower surface for being attached at third medium substrate and with it is same
The outer conductor of shaft cable is connected;The metal band is connected with each other the lower surface for being attached at third medium substrate and and coaxial cable
Inner conductor be connected.
7. a kind of parallel-polarized two-band Huygens source electronically small antenna according to claim 1, it is characterised in that: first
It is that Tai Kang founds TLY-5, relative dielectric constant 2.2, loss angle tangent 0.0009, three layers of medium to third medium substrate material
Substrate is the circular configuration of radius 39mm, and thickness is 0.51mm.
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CN201811194938.6A CN109462035A (en) | 2018-10-12 | 2018-10-12 | A kind of small Huygens's source antenna of two-band electricity of cross polarization |
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Cited By (3)
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CN112909506A (en) * | 2021-01-16 | 2021-06-04 | 深圳市睿德通讯科技有限公司 | Antenna structure and antenna array |
CN114512794A (en) * | 2022-01-11 | 2022-05-17 | 京信通信技术(广州)有限公司 | Antenna device and array antenna |
CN114976614A (en) * | 2022-05-26 | 2022-08-30 | 四川大学 | Huygens element electric small antenna simultaneously used for wireless energy transmission and wireless communication |
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CN108461888A (en) * | 2018-03-23 | 2018-08-28 | 重庆大学 | A kind of directional diagram reconstructable broadband flexibility electronically small antenna applied to wisdom traffic |
CN108539361A (en) * | 2018-04-16 | 2018-09-14 | 重庆大学 | A kind of small Huygens's source antenna of electricity that polarization is restructural |
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CN108461888A (en) * | 2018-03-23 | 2018-08-28 | 重庆大学 | A kind of directional diagram reconstructable broadband flexibility electronically small antenna applied to wisdom traffic |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112909506A (en) * | 2021-01-16 | 2021-06-04 | 深圳市睿德通讯科技有限公司 | Antenna structure and antenna array |
CN112909506B (en) * | 2021-01-16 | 2021-10-12 | 深圳市睿德通讯科技有限公司 | Antenna structure and antenna array |
CN114512794A (en) * | 2022-01-11 | 2022-05-17 | 京信通信技术(广州)有限公司 | Antenna device and array antenna |
CN114512794B (en) * | 2022-01-11 | 2024-05-24 | 京信通信技术(广州)有限公司 | Antenna device and array antenna |
CN114976614A (en) * | 2022-05-26 | 2022-08-30 | 四川大学 | Huygens element electric small antenna simultaneously used for wireless energy transmission and wireless communication |
CN114976614B (en) * | 2022-05-26 | 2023-04-25 | 四川大学 | Huygens small electric antenna for wireless energy transmission and wireless communication |
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