CN110289480A - A kind of beam scanning array antenna of dipoles applied to smartwatch - Google Patents
A kind of beam scanning array antenna of dipoles applied to smartwatch Download PDFInfo
- Publication number
- CN110289480A CN110289480A CN201910632970.6A CN201910632970A CN110289480A CN 110289480 A CN110289480 A CN 110289480A CN 201910632970 A CN201910632970 A CN 201910632970A CN 110289480 A CN110289480 A CN 110289480A
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- medium substrate
- winding type
- array element
- smartwatch
- type dipole
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- 239000000758 substrate Substances 0.000 claims abstract description 29
- 238000004804 winding Methods 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- 230000005855 radiation Effects 0.000 abstract description 19
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 238000004088 simulation Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 24
- 238000013461 design Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R60/00—Constructional details
- G04R60/06—Antennas attached to or integrated in clock or watch bodies
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
-
- 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
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path
- H01Q21/205—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path providing an omnidirectional coverage
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of beam scanning array antennas of dipoles applied to smartwatch, including square-shaped metal, metal ground planar side is equipped with medium substrate, the medium substrate is perpendicular to metal upper ground surface and is interconnected to form four peripheral wall structures, identical winding type dipole array element is printed on the medium substrate, the winding type dipole array element arranges between two parties on medium substrate, the winding type dipole array element is folded to wriggle by multiple doublet units and be formed, and feed port is equipped between the adjacent doublet unit of two of them.The present invention is based on power transmission efficiency maximization theory, unit using winding type dipole as array antenna, four array element working frequency range simulation results can cover bluetooth, WiFi and ISM band, radiation gain is high, radiation efficiency is high, radiation mode multiplicity, the function of beam scanning may be implemented in pitching face in Directed radiation modes, and has good MIMO performance.
Description
Technical field
The present invention relates to antenna technical fields, more particularly, to a kind of beam scanning Dipole Arrays applied to smartwatch
Array antenna.
Background technique
With the fast development of mobile communication and the rapid growth of mobile subscriber, smart antenna has been widely regarded as improving
The key technology of communication quality and the availability of frequency spectrum.Wearable antenna suffers from huge using valence in fields such as medical treatment, military affairs
Value.In terms of medical treatment, antenna, sensor and Medical Devices can be placed on human body together, be detected by day bundle of lines
Data transmission to the network terminal, so that patient body state can be monitored in real time in doctor；In military field, antenna can be placed
At soldier's helmet or back, signal is sent convenient for receiving.In addition to this, wearable antenna is with fire fighter, sportsman
Also it can be applied.Therefore wearable antenna system research and development has obtained the extensive concern of academia and industry.Smart antenna
Array can produce spatial orientation wave beam, and radio signal adaptively can be directed to user direction, and secondary lobe and zero
Point is directed toward other possible interference signals.
Therefore it is of great significance intelligent with wearable combine, existing smartwatch antenna radiation pattern is single, no
Have the function of beam scanning, and seldom considers whether smartwatch internal electronic element can cause shadow to the performance of antenna
It rings, leads to have limitation in practical application.
Summary of the invention
Goal of the invention: in order to overcome the shortcomings of background technique, the invention discloses a kind of wave beams applied to smartwatch
Scan the array antenna of dipoles.
Technical solution: the beam scanning array antenna of dipoles applied to smartwatch of the invention, including square gold
Possession, metal ground planar side are equipped with medium substrate, and the medium substrate is perpendicular to metal upper ground surface and mutually
Connection forms four peripheral wall structures, and identical winding type dipole array element is printed on the medium substrate, and the winding type is even
Pole submatrix member arranges between two parties on medium substrate, and the winding type dipole array element folds serpentine by multiple doublet units
At equipped with feed port between the adjacent doublet unit of two of them.
Dipole is arranged in Jie using printing winding type dipole as array element using the pattern features of dipole
On matter substrate, since the effective wavelength on substrate is less than air medium wavelength, the size of array antenna had both been effectively reduced in this way,
And it is easy to process.
The activation profile of array element is not constant amplitude with phase, but is obtained based on power transmission maximized theoretical optimization.It is logical
It crosses and places receiving antenna in far field specific position (radiation direction), optimize the biography between designed transmitting antenna and receiving antenna
Defeated efficiency finds the activation profile of one group of transmitting antenna of corresponding maximum transmitted efficiency, this group excitation is exactly to design transmitting antenna
Required Optimum Excitation distribution.This group excitation is assigned to corresponding array element in such a way that radio circuit is fed, to realize
The effect of directed radiation.Scattering parameter needed for whole process can be obtained by electromagnetic simulation software HFSS15.0.
Further, doublet unit wriggles broken number to be more than six foldings in the winding type dipole array element.
Further, the upper-lower height of doublet unit is consistent in the winding type dipole array element, upper end and medium base
The top edge of plate is concordant, and lower end is spaced same distance with metal.
Further, four fold doublet unit and the 5th folding is arranged in winding type dipole array element in the feed port
Upper end between doublet unit is concordant with medium substrate top edge.
Further, the medium substrate be dielectric constant be 4.4, loss tangent angle is 0.02, with a thickness of 1.6mm's
FR4 material.
The utility model has the advantages that compared with prior art, advantages of the present invention are as follows: the present invention is maximized theoretical with power transmission efficiency
Based on, the unit using winding type dipole as array antenna, four array element working frequency range simulation results can cover
Bluetooth, WiFi and ISM band, radiation gain is high, radiation efficiency is high, radiation mode multiplicity, and Directed radiation modes are in pitching face
The function of beam scanning may be implemented, and there is good MIMO performance.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is single winding type Dipole Arrays meta structure schematic diagram of the invention；
Fig. 3 is that the present invention is placed on hand model emulation schematic diagram；
Fig. 4 is that array element of the present invention is placed on hand model actual measurement and artificial reflections coefficient；
Fig. 5 is the isolation reality and analogous diagram between each array element of the present invention；
Fig. 6 is each port of the present invention in free space and the related coefficient figure emulated on hand model: (a) freely empty
Between in each port related coefficient figure, (b) each port related coefficient figure on hand model；
Fig. 7 is array antenna antenna pattern of the present invention: (a) θ=0 ° actual measurement and emulation directional diagram in free space, (b)
θ=0 ° emulates directional diagram on hand model, (c) actual measurement of the face xoz θ=35 ° and emulation directional diagram, (d) face xoz θ in free space
Directional diagram is emulated on=35 ° of hand models, (e) actual measurement of the face yoz θ=35 ° and emulation directional diagram, (f) face yoz θ in free space
Directional diagram is emulated on=35 ° of hand models；
Fig. 8 is array antenna internal simulation smartwatch internal electronic element emulation schematic diagram of the present invention；
Fig. 9 is that whether there is or not metal box to emulate S parameter variation diagram inside array antenna of the present invention: (a) unit reflection coefficient becomes
Change figure, (b) isolation variation diagram；
Figure 10 is that whether there is or not metal box simulated radiation directional diagram variation diagrams inside array antenna of the present invention: (a) θ on hand model
=0 ° of emulation directional diagram, (b) emulates directional diagram on the hand model of the face xoz θ=35 °.
Specific embodiment
Further description of the technical solution of the present invention with reference to the accompanying drawings and examples.
The beam scanning array antenna of dipoles applied to smartwatch as depicted in figs. 1 and 2, including square-shaped metal
Ground 1, the metal on 1 planar side be equipped with medium substrate 2, which is 4.4, loss tangent angle
The FR4 material for being 1.6mm for 0.02, substrate thickness, having a size of 42mm × 42mm × 9.6mm, the medium substrate 2 is perpendicular to gold
1 upper surface of possession and four peripheral wall structures are interconnected to form, identical winding type dipole is printed on the medium substrate 2
Array element 3, the winding type dipole array element 3 arrange between two parties on medium substrate 2, and the winding type dipole array element 3 is by six
Doublet unit 301 is folded to wriggle and be formed, and the upper-lower height of doublet unit 301 is consistent in the winding type dipole array element 3,
Upper end is concordant with the top edge of medium substrate 2, and lower end with metal 1 is spaced same distance, and winding type dipole array element 3 is in medium
When being printed on substrate 2, it should which the top edge of the vertical space of reason medium substrate 2 big as far as possible, i.e. upper end and medium substrate 2 is flat
Together, lower end with metal 1 interval it is small as far as possible at a distance from.Feed port is equipped between the adjacent doublet unit 301 of two of them
4, which is arranged in winding type dipole array element 3 between four fold doublet unit and the 5th folding doublet unit
Upper end it is concordant with 2 top edge of medium substrate.Dimensional parameters L1=1mm, the L2=7mm of the winding type dipole array element 3,
W1=1.5mm, W2=3mm, W3=5mm, W4=2mm, W5=5mm, W6=3mm, it is all to dissipate in the design process of the above antenna
Parameter is penetrated to be obtained by electromagnetic simulation software HFSS15.0 optimization design.
The present invention is placed on hand model emulation as shown in Figure 3.
As shown in Figure 4 and Figure 5, antenna is measured using N9918A vector network analyzer after antenna material object manufacture is completed
Its reflection coefficient obtained with emulation is compared, is respectively obtained between the reflection coefficient and unit of unit by reflection coefficient
Isolation.
As shown in fig. 6, drawing each port of array antenna of the present invention in free space and the phase emulated on hand model
Relationship number figure, including each port related coefficient figure (b) on each port related coefficient figure (a) and hand model in free space.
When surveying antenna radiation pattern, with fries transmission formula:
(PR,dB-lR,dB)-(PT,dB+lT,dB)=GT,dB+GR,dB-20log10f-20log10d+147.56
Using loudspeaker as standard antenna, measuring needs, specific step is as follows:
1, standard antenna is connect with signal generator by transmission line, replaces power meter and quilt with vector network analyzer
Observation line is connected by transmission line.
2, setting signal frequency generator f, transmission power PT.
3, the loss l of transmission line between standard antenna and signal generator is measured by vector network analyzerT,dB, it is tested
The loss l of transmission line between antenna and vector network analyzerR,dB。
4, the height of standard antenna and test antenna is adjusted to same level, guarantees the distance between antenna d remote
?.Measure the power P R that vector network analyzer receives.
5, it keeps tested antenna motionless, standard antenna is rotatedAngle repeats step 4,5.
6, it is real in free space that array antenna then including the loss calculation of radio-frequency feed circuit board, will be respectively obtained again
It surveys directional diagram and is compared with emulation, as shown in Figure 7.
As shown in Fig. 8, Fig. 9 and Figure 10, array antenna internal simulation smartwatch internal electronic element of the present invention is emulated,
Obtain inside array antenna of the present invention whether there is or not metal box emulate S parameter variation diagram: (a) unit reflection coefficient variation diagram, (b) every
From whether there is or not metal box simulated radiation directional diagram variation diagrams inside degree variation diagram, and array antenna of the present invention: (a) on hand model
θ=0 ° emulates directional diagram, (b) emulates directional diagram on the hand model of the face xoz θ=35 °.
Four cell array antennas have smaller size 42mm × 42mm × 9.6mm, and size is smaller, high gain, low cost ,-
10dB working frequency range below is 2.40GHz-2.52GHz, bandwidth about 120MHz, and pitching face maximum directive gain reaches 4.6dBi
(free space), 3.2dBi (are placed above the human body hand model at 3mm)；The radiation of four cell array antenna directions can bow
It faces upward the face XOZ, beam scanning is realized in the face YOZ, and has good MIMO performance.And inside be added a 20mm ×
The metal box of 20mm × 7mm simulates smartwatch internal electronic element, and the performance of antenna is not affected, can be very good
It applies in smartwatch equipment.
With 2015, Saou-Wen Sun, the Yi-Ting Hsieh in the research center R&D of Taiwan ASUS et al. exists
“Integrated metal-frame antenna for smartwatch wearable device”(IEEE
Trans.Antennas Propag., vol.63, no.7, pp.3301-3305, Jul.2015.) propose that one kind is integrated in intelligence
WiFi/ Bluetooth antenna among wrist-watch frame is compared, and four element antenna array sizes in the present invention are smaller, radiation mode multiplicity
Change, and gain is higher；With the DL Wen of London University's Marie Antoinette institute electronic engineering and College of Computer Science in 2018
With Y.Hao et al. in " Design of a MIMO Antenna with High Isolation for Smartwatch
Applications Using the Theory of Characteristic Modes,”(IEEE Trans Antennas
Propag, to be published, 2019.) a kind of mimo antenna suitable for metal framework smartwatch of design is compared,
Antenna array unit number is more in the present invention, and MIMO performance is more preferable, and radiation gain is high, radiation efficiency is high, radiation mode is more
Sample.
Claims (5)
1. a kind of beam scanning array antenna of dipoles applied to smartwatch, it is characterised in that: including square-shaped metal
(1), the metal on (1) planar side be equipped with medium substrate (2), the medium substrate (2) is perpendicular to metal on (1)
Surface and four peripheral wall structures are interconnected to form, are printed with identical winding type dipole array element on the medium substrate (2)
(3), the winding type dipole array element (3) arranges between two parties on medium substrate (2), the winding type dipole array element (3) by
Multiple doublet units (301) fold to wriggle and be formed, and feed port is equipped between the adjacent doublet unit of two of them (301)
(4)。
2. the beam scanning array antenna of dipoles according to claim 1 applied to smartwatch, it is characterised in that: institute
It states doublet unit (301) in winding type dipole array element (3) and wriggles broken number to be more than six foldings.
3. the beam scanning array antenna of dipoles according to claim 1 applied to smartwatch, it is characterised in that: institute
The upper-lower height for stating doublet unit (301) in winding type dipole array element (3) is consistent, the top of upper end and medium substrate (2)
Edge is concordant, and lower end with metal (1) is spaced same distance.
4. the beam scanning array antenna of dipoles according to claim 1 applied to smartwatch, it is characterised in that: institute
State feed port (4) be arranged in winding type dipole array element (3) four fold doublet unit and the 5th folding doublet unit it
Between upper end it is concordant with medium substrate (2) top edge.
5. the beam scanning array antenna of dipoles according to claim 1 applied to smartwatch, it is characterised in that: institute
State medium substrate (2) be dielectric constant be 4.4, loss tangent angle is 0.02, with a thickness of the FR4 material of 1.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910632970.6A CN110289480A (en) | 2019-07-12 | 2019-07-12 | A kind of beam scanning array antenna of dipoles applied to smartwatch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910632970.6A CN110289480A (en) | 2019-07-12 | 2019-07-12 | A kind of beam scanning array antenna of dipoles applied to smartwatch |
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| CN110289480A true CN110289480A (en) | 2019-09-27 |
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| CN201910632970.6A Pending CN110289480A (en) | 2019-07-12 | 2019-07-12 | A kind of beam scanning array antenna of dipoles applied to smartwatch |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013621A (en) * | 2021-03-01 | 2021-06-22 | 南京航空航天大学 | Compact high-isolation MIMO antenna for 5G mobile terminal |
| CN113794043A (en) * | 2021-08-27 | 2021-12-14 | 南京信息工程大学 | Dual-frequency dual-polarization filtering base station antenna |
| CN115064868A (en) * | 2022-07-06 | 2022-09-16 | 杭州电子科技大学 | Dual-polarized crossed dipole transparent antenna |
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| CN210224275U (en) * | 2019-07-12 | 2020-03-31 | 南京信息工程大学 | Beam scanning dipole array antenna applied to smart watch |
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2019
- 2019-07-12 CN CN201910632970.6A patent/CN110289480A/en active Pending
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013621A (en) * | 2021-03-01 | 2021-06-22 | 南京航空航天大学 | Compact high-isolation MIMO antenna for 5G mobile terminal |
| CN113013621B (en) * | 2021-03-01 | 2022-08-05 | 南京航空航天大学 | Compact high-isolation MIMO antenna for 5G mobile terminal |
| CN113794043A (en) * | 2021-08-27 | 2021-12-14 | 南京信息工程大学 | Dual-frequency dual-polarization filtering base station antenna |
| CN115064868A (en) * | 2022-07-06 | 2022-09-16 | 杭州电子科技大学 | Dual-polarized crossed dipole transparent antenna |
| CN115064868B (en) * | 2022-07-06 | 2024-04-16 | 杭州电子科技大学 | Dual-polarized cross dipole transparent antenna |
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