CN110474170A - A kind of channel-type millimeter wave preiodic type cross array antenna - Google Patents
A kind of channel-type millimeter wave preiodic type cross array antenna Download PDFInfo
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- CN110474170A CN110474170A CN201910769627.6A CN201910769627A CN110474170A CN 110474170 A CN110474170 A CN 110474170A CN 201910769627 A CN201910769627 A CN 201910769627A CN 110474170 A CN110474170 A CN 110474170A
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- array
- antenna
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- array element
- millimeter wave
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/005—Prospecting or detecting by optical means operating with millimetre waves, e.g. measuring the black losey radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/225—Supports; Mounting means by structural association with other equipment or articles used in level-measurement devices, e.g. for level gauge measurement
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
Abstract
The present invention relates to a kind of channel-type millimeter wave preiodic type cross array antennas, belong to antenna technical field.It is made of 2 groups of identical preiodic type cross array antennas, is individually positioned in the two sides in stream of people channel.Preiodic type cross array antenna is made of 32 cross arrays, and horizontal direction is divided into four column, and vertical direction is divided into 8 rows.Cross array antenna is made of 82 transmitting array elements and 82 reception array elements, and transmitting array element and reception array element are arranged in vertical, horizontal direction linear homogeneous respectively, and array element spacing is 6mm, and length of synthetic aperture is 486mm.Transmitting and reception array element are all made of substrate integration wave-guide and double dipole design method, effectively improve millimeter-wave radiation bandwidth and gain, simplify feed structure, reduce array element size.Without Mechanical Moving or rotation, 360 ° of human body imagings are realized, cross array utilizes time-sharing multiplex, or the working method of frequency dividing multiplexing, realizes the quick scanning of antenna, improve image taking speed.
Description
Technical field
The invention belongs to antenna technical fields, are related to a kind of channel-type millimeter wave preiodic type cross array antenna.
Background technique
Millimeter-wave signal low advantage of good, high resolution, electromagnetic radiation dosage by penetrability, is increasingly used in
Safety check imaging field.Millimeter wave human body safety check instrument radiates millimeter wave to space by transmitting antenna from millimeter-wave transmitter, then
Scattering millimeter wave by target is received antenna reception, carries out three to object using the amplitude and phase information of echo-signal
Dimension imaging.In this course, transmitting and receiving device of the antenna as millimeter wave, is of crucial importance.
Existing millimeter wave array antenna mostly uses one-dimensional linear structure, is uniformly distributed by multiple in horizontal or vertical direction
Transmitting and receiving antenna array element to composition.When system works, the sequential working of wire antenna array element is realized using electronic switch；Benefit
Scanning or circular scanning of the linear array antenna in dimension normal thereto are realized with mechanical displacement.Synchronization, only one
It is a kind of single station operating mode to transmitting and receiving antenna work.The one-dimensional linear array Antenna Operation is time-consuming, image taking speed
Slowly；There are position errors for mechanical displacement, influence imaging precision.
Theoretically, a whole plane or circumferential densities array antenna are designed, can solve the time-consuming problem of scanning.But
It is that system complexity and cost can significantly improve, is not a kind of feasible millimeter wave array antenna implementation method.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of channel-type millimeter wave preiodic type cross array antennas.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of channel-type millimeter wave preiodic type cross array antenna, including two groups of preiodic type cross array antennas, two groups of battle arrays
Array antenna is individually positioned in the two sides in stream of people channel；
Two group pattern antennas work independently, while to tested human body radiation and receiving millimeter-wave signal, respectively after imaging, then
Synthesize 360 ° of 3-D images of human body；
Preiodic type cross array antenna is made of M*N cross array；
Horizontal direction is M column, and vertical direction is N row, compositionPlanar array；
The transmitting array element and reception array element of cross array antenna, quantity is X；
It is linearly evenly distributed in vertical direction to emit array element, receiving array element, linear homogeneous arranges in the horizontal direction, emits battle array
Member and the array element spacing for receiving array element are millimeter wave central wavelength lambdac, length of synthetic aperture is (X-1) λc, and meet (X-1)
λc< 0.5m.
Optionally, the cross array antenna size is 0.5m*0.5m.
Optionally, the transmitting array element and reception array element are substrate integration wave-guide double-dipole antennas, by first medium
Plate, the first metal coating, second medium plate, the second metal coating and third dielectric-slab composition；
First medium plate upper surface is contacted with air, and lower surface is etched with the first metal coating, on second medium plate
Surface and first medium plate following table face contact, lower surface is contacted with third dielectric-slab upper surface；
Third dielectric-slab upper surface is etched with the second metal coating, and lower surface is contacted with air；Dielectric-slab short side end
End is fixed with SMP connector, is used to connecting coaxial cable.
Optionally, substrate integration wave-guide double-dipole antenna front end is double dipole radiator；
The first, second metal coating etched on symmetrical above and below first, third dielectric-slab has flat perpendicular to dielectric-slab
The charge in face, i.e. electric dipole；
Antenna front ends have rectangular aperture, and the first, second metal coating and through hole form rectangle circulating current, i.e. magnetic
Dipole.
Optionally, substrate integration wave-guide double-dipole antenna end is feed port, utilizes metal coating cabling ruler
Very little adjustment impedance connects SMP connector.
Optionally, metalized through-via is arranged in the substrate integration wave-guide double-dipole antenna dielectric-slab, and through hole forms U
Type structure reduces the backward radiation of antenna.
The beneficial effects of the present invention are: the present invention is made of 2 groups of identical preiodic type cross array antennas, respectively
The two sides in stream of people channel are placed on, Mechanical Moving or rotation is not necessarily to, 360 ° of human body imagings can be realized.Every group of preiodic type cross
Array antenna is made of M*N cross array.It can use time-sharing multiplex, or the working method of frequency dividing multiplexing, realize antenna
Quick scanning, improve image taking speed.It therefore, can be with using channel-type millimeter wave preiodic type cross array antenna of the present invention
The sweep time of millimeter wave human body safety check instrument is reduced, detection handling capacity is improved.
Preiodic type cross array antenna is made of M*N cross array, although single array element spacing needs to meet in array
Nyquist sampling theorem, but there is sparse characteristic between array, effectively reduce channel-type millimeter wave preiodic type cross battle array
The overall quantity of array antenna, reduces system complexity.
Transmitting and reception array element effectively improve millimeter using the design method of substrate integration wave-guide and double dipole
Wave radiation bandwidth and gain, simplify feed structure, reduce array element size.
Array antenna of the present invention can be used for millimeter wave human body imaging safety check instrument, realize the transmitting and reception of millimeter wave.In the least
Metric wave human body imaging safety check instrument using it is harmless to humans, clothing, resolution ratio can be penetrated up to millimetre-sized millimeter-wave signal,
The contrabands such as the weapon in human body, explosive are concealed in detection.
Other advantages, target and feature of the invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.Target of the invention and other advantages can be realized by following specification and
It obtains.
Detailed description of the invention
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is made below in conjunction with attached drawing excellent
The detailed description of choosing, in which:
Fig. 1 is channel-type millimeter wave preiodic type cross array antenna schematic diagram；
Fig. 2 is preiodic type cross array antenna assumption diagram；
Fig. 3 is cross array structure chart；
Fig. 4 is array element sectional view；
Fig. 5 is array element top view.
Specific embodiment
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Other advantages and efficacy of the present invention can be easily understood for disclosed content.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints and application, without departing from
Various modifications or alterations are carried out under spirit of the invention.It should be noted that diagram provided in following embodiment is only to show
Meaning mode illustrates basic conception of the invention, and in the absence of conflict, the feature in following embodiment and embodiment can phase
Mutually combination.
Wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, should not be understood as to this
The limitation of invention；Embodiment in order to better illustrate the present invention, the certain components of attached drawing have omission, zoom in or out, not
Represent the size of actual product；It will be understood by those skilled in the art that certain known features and its explanation may be omitted and be in attached drawing
It is understood that.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if there is the orientation or positional relationship of the instructions such as term " on ", "lower", "left", "right", "front", "rear"
To be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description of the present invention and simplification of the description, rather than indicate or
It implies that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore is described in attached drawing
The term of positional relationship only for illustration, is not considered as limiting the invention, for the ordinary skill of this field
For personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
Term is explained:
(1) channel-type
Millimeter wave preiodic type cross array antenna of the invention includes two planes, and each plane is by multiple (usually 32
It is a) cross array antenna composition, the two sides in stream of people channel are individually positioned in, realize 360 ° of millimeter wave detections of human body, therefore claim
Be " channel-type ".
(2) preiodic type
In the present invention, all transmittings of single cross array antenna and a reception array element millimeter wave broadband of completion are swept
Frequently, a referred to as duty cycle.And channel-type array antenna of the invention is by multiple (usually 32) ten of two planes
Word array antenna composition completes submillimeter wave scanning to human body in entire channel and needs multiple duty cycles, therefore is referred to as
For " preiodic type " cross array antenna.
(3) millimeter wave
The electromagnetic wave of 30~300GHz of frequency (1~10mm of wavelength), referred to as millimeter wave.It is located at microwave and far infrared wave phase
Overlapping wave-length coverage.Its significant advantage includes: to belong to Non-ionizing radiation, is endangered without ionization human body, the electricity of scanning signal
Magnetic radiation power is only the one thousandth of mobile phone signal；Transmittance is good, can penetrate clothing easily；Resolution ratio relative microwave is more
Height can achieve grade.Therefore, it is extremely suitable for use in safety check imaging field.
(4) double dipole
Refer to electric dipole and magnetic dipole.
Electric dipole is two separation a distances, and electricity is equal, positive and negative opposite charge.In the present invention, refer to substrate collection
At in waveguide (Substrate Integrated Waveguide, SIW) structure, perpendicular to substrate on dielectric-slab symmetrical above and below
The charge of integrated waveguide plane.
Magnetic dipole is the electric current of a circle closed circulation.In the present invention, refer to substrate integration wave-guide front end rectangular radiation seam electricity
Stream.
(5) substrate integration wave-guide
Through-hole is added between microstrip line and ground plane, the waveguide type structure established on substrate.
Embodiment:
A kind of channel-type millimeter wave preiodic type cross array antenna is by 2 groups of identical preiodic type cross array antenna sets
At being individually positioned in the two sides in stream of people channel, as shown in Figure 1.2 group pattern antennas work independently, while to tested human body radiation
With reception millimeter-wave signal, respectively after imaging, then 360 ° of 3-D images of human body are synthesized.
Preiodic type cross array antenna is made of 32 cross arrays, as shown in Figure 2.Horizontal direction is divided into four column, vertically
Direction is divided into 8 rows, and each cross array forms the planar array of 1m*2m having a size of 0.5m*0.5m.Cross array outermost day
Line and planar horizontal and vertical edge distance are 7mm, and the horizontal and vertical distance between cross array is 14mm.
Cross array antenna is made of 82 transmitting array elements and 82 reception array elements, as shown in Figure 3.Emit array element vertical
Dimension linear is evenly distributed, and receiving array element, linear homogeneous arranges in the horizontal direction, and array element spacing is 6mm, length of synthetic aperture
It is 486mm.
Transmitting and receive array element be substrate integration wave-guide double-dipole antenna, by first medium plate, the first metal coating,
Second medium plate, the second metal coating and third dielectric-slab composition, as shown in Figure 4.First medium plate upper surface is contacted with air,
Lower surface is etched with the first metal coating, second medium plate upper surface and first medium plate following table face contact, lower surface and third
The contact of dielectric-slab upper surface.Third dielectric-slab upper surface is etched with the second metal coating, and lower surface is contacted with air.Three media
Board size is 6mm*30mm, and short side end is fixed with SMP connector, is used to connecting coaxial cable.
Substrate integration wave-guide double-dipole antenna front end is double dipole radiator.It is situated between in symmetrical above and below first, third
The first, second metal coating etched on scutum, there is the charge perpendicular to dielectric-slab plane, i.e. electric dipole.Antenna front ends have
Rectangular aperture, the first, second metal coating and through hole form rectangle circulating current, i.e. magnetic dipole.
Substrate integration wave-guide double-dipole antenna end is feed port, using metal coating cabling size adjusting impedance,
Connect SMP connector.
Metalized through-via is arranged in substrate integration wave-guide double-dipole antenna dielectric-slab, and through hole forms U-shaped structure, reduces
The backward radiation of antenna.
Fig. 5 is array element top view.
Channel-type millimeter wave preiodic type cross array Antenna Operation mistake:
In cross array antenna, 82 transmitting array elements use time-sharing multiplex, or the mode of frequency dividing multiplexing, radiate to space
Millimeter wave broadband (such as 26.5~40GHz) signal, all 82 receive the scattering millimeter wave letter that array element receives object simultaneously
Number.When all 82 transmitting array elements completion millimeter wave broadband signal scanning, that is, complete a duty cycle.Preiodic type cross array
All 32 cross arrays of antenna work at the same time, the respective complete independently duty cycle.Channel-type millimeter wave preiodic type cross array
Antenna is made of 2 groups of identical preiodic type cross array antennas.2 group pattern antennas work independently, while to tested human body
Radiation and reception millimeter-wave signal, respectively after imaging, then synthesize 360 ° of 3-D images of human body.
Finally, it is stated that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to skill of the invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of the technical program, should all be covered in the present invention
Scope of the claims in.
Claims (6)
1. a kind of channel-type millimeter wave preiodic type cross array antenna, it is characterised in that: including two groups of preiodic type cross array days
Line, two group pattern antennas are individually positioned in the two sides in stream of people channel；
Two group pattern antennas work independently, while to tested human body radiation and receiving millimeter-wave signal, respectively after imaging, then synthesize
For 360 ° of 3-D images of human body；
Preiodic type cross array antenna is made of M*N cross array；
Horizontal direction is M column, and vertical direction is N row, compositionPlanar array；
The transmitting array element and reception array element of cross array antenna, quantity is X；
Emit array element it is linearly evenly distributed in vertical direction, receive array element in the horizontal direction linear homogeneous arrange, transmitting array element and
The array element spacing for receiving array element is millimeter wave central wavelength lambdac, length of synthetic aperture is (X-1) λc, and meet (X-1) λc<
0.5m。
2. a kind of channel-type millimeter wave preiodic type cross array antenna according to claim 1, it is characterised in that: described ten
Word array antenna size is 0.5m*0.5m.
3. a kind of channel-type millimeter wave preiodic type cross array antenna according to claim 1, it is characterised in that: the hair
Penetrating array element and receiving array element is substrate integration wave-guide double-dipole antenna, is situated between by first medium plate, the first metal coating, second
Scutum, the second metal coating and third dielectric-slab composition；
First medium plate upper surface is contacted with air, and lower surface is etched with the first metal coating, second medium plate upper surface
With first medium plate following table face contact, lower surface is contacted with third dielectric-slab upper surface；
Third dielectric-slab upper surface is etched with the second metal coating, and lower surface is contacted with air；Dielectric-slab short side end is solid
Surely there is SMP connector, be used to connecting coaxial cable.
4. a kind of channel-type millimeter wave preiodic type cross array antenna according to claim 3, it is characterised in that: the base
Piece integrated waveguide double-dipole antenna front end is double dipole radiator；
The first, second metal coating etched on symmetrical above and below first, third dielectric-slab, has perpendicular to dielectric-slab plane
Charge, i.e. electric dipole；
Antenna front ends have rectangular aperture, and the first, second metal coating and through hole form rectangle circulating current, i.e. magnetic dipole
Son.
5. a kind of channel-type millimeter wave preiodic type cross array antenna according to claim 3, it is characterised in that: the base
Piece integrated waveguide double-dipole antenna end is feed port, using metal coating cabling size adjusting impedance, connects SMP connection
Device.
6. a kind of channel-type millimeter wave preiodic type cross array antenna according to claim 3, it is characterised in that: the base
Metalized through-via is arranged in piece integrated waveguide double-dipole antenna dielectric-slab, and through hole forms U-shaped structure, reduces the backward of antenna
Radiation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910769627.6A CN110474170A (en) | 2019-08-20 | 2019-08-20 | A kind of channel-type millimeter wave preiodic type cross array antenna |
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| CN201910769627.6A CN110474170A (en) | 2019-08-20 | 2019-08-20 | A kind of channel-type millimeter wave preiodic type cross array antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564697A (en) * | 2020-05-02 | 2020-08-21 | 成都睿识智能科技有限公司 | Active electric scanning array antenna for portable security inspection equipment and antenna system |
| CN112305542A (en) * | 2020-10-30 | 2021-02-02 | 中国科学院重庆绿色智能技术研究院 | Biplane multi-base cross array millimeter wave number domain rapid imaging method |
| CN113206388A (en) * | 2021-05-13 | 2021-08-03 | 浙江大学 | Imaging system based on phase modulation active frequency selection surface and imaging method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140240186A1 (en) * | 2013-02-28 | 2014-08-28 | Samsung Electronics Co., Ltd | Open end antenna, antenna array, and related system and method |
| CN206301945U (en) * | 2016-12-30 | 2017-07-04 | 广东盛路通信科技股份有限公司 | A kind of multilayer planar aerial array |
| CN107219527A (en) * | 2017-05-27 | 2017-09-29 | 吉林大学 | A kind of single snap fast imaging method of the double array channel formula imaging systems of preiodic type |
| CN109725363A (en) * | 2019-01-18 | 2019-05-07 | 徐州纽卡电子科技有限公司 | Mm-wave imaging duplex scanning detection system |
-
2019
- 2019-08-20 CN CN201910769627.6A patent/CN110474170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140240186A1 (en) * | 2013-02-28 | 2014-08-28 | Samsung Electronics Co., Ltd | Open end antenna, antenna array, and related system and method |
| CN206301945U (en) * | 2016-12-30 | 2017-07-04 | 广东盛路通信科技股份有限公司 | A kind of multilayer planar aerial array |
| CN107219527A (en) * | 2017-05-27 | 2017-09-29 | 吉林大学 | A kind of single snap fast imaging method of the double array channel formula imaging systems of preiodic type |
| CN109725363A (en) * | 2019-01-18 | 2019-05-07 | 徐州纽卡电子科技有限公司 | Mm-wave imaging duplex scanning detection system |
Non-Patent Citations (1)
| Title |
|---|
| JINGXUE WANG，YUJIAN LI: "A 60 GHz Horizontally Polarized Magnetoelectric Dipole Antenna Array With 2-D Multibeam Endfire Radiation", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564697A (en) * | 2020-05-02 | 2020-08-21 | 成都睿识智能科技有限公司 | Active electric scanning array antenna for portable security inspection equipment and antenna system |
| CN112305542A (en) * | 2020-10-30 | 2021-02-02 | 中国科学院重庆绿色智能技术研究院 | Biplane multi-base cross array millimeter wave number domain rapid imaging method |
| CN112305542B (en) * | 2020-10-30 | 2023-10-17 | 中国科学院重庆绿色智能技术研究院 | Double-plane multi-base cross array millimeter wave number domain rapid imaging method |
| CN113206388A (en) * | 2021-05-13 | 2021-08-03 | 浙江大学 | Imaging system based on phase modulation active frequency selection surface and imaging method thereof |
| CN113206388B (en) * | 2021-05-13 | 2022-06-21 | 浙江大学 | Imaging system based on phase modulation active frequency selection surface and imaging method thereof |
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