CN203617426U - Antenna array used for close-range active millimeter wave imaging system - Google Patents
Antenna array used for close-range active millimeter wave imaging system Download PDFInfo
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- CN203617426U CN203617426U CN201320832933.8U CN201320832933U CN203617426U CN 203617426 U CN203617426 U CN 203617426U CN 201320832933 U CN201320832933 U CN 201320832933U CN 203617426 U CN203617426 U CN 203617426U
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Abstract
The utility model discloses an antenna array for a close-range active millimeter wave imaging system. The antenna array comprises a receiving antenna array, a transmitting antenna array and shielding baffles. The receiving antenna array and the transmitting antenna array each comprise a plurality of tightly connected antenna units. The shielding baffles are disposed respectively at two sides of the receiving antenna array and the transmitting antenna array. Through the above structure, the antenna array has a firm mechanical structure and low-profile properties, has the characteristics of high channel isolation and high anti-interference capability, and is suitable for use in the close-range active millimeter wave imaging system.
Description
Technical field
The utility model relates to a kind of aerial array, especially for the aerial array of active millimeter wave imaging system closely.
Background technology
Millimeter wave refers to the electromagnetic wave of operation wavelength at 10mm～1mm, in fields such as radar, remote sensing, spectroscopy by extensive use.Mm-wave imaging refers to the technology of utilizing the scattering properties identification target of object to millimeter wave, millimeter wave imaging system based on Synthetic Aperture Radar Technique adopts two-dimentional machinery and/or electronic scanning technique, can obtain the amplitude-phase information of target scattering, thereby obtain the two dimensional image of target.Compared with low frequency microwave imaging, millimetre wavelength is shorter, and therefore imaging resolution is higher; Than optics or infrared imaging, millimeter wave can penetrate clothing and cover, therefore the very applicable detection that is applied to human body concealed weapons and dangerous material.
Closely active millimeter wave cylinder scanning imaging system is comparatively ripe millimeter wave holographic imaging system, and this system is utilized broadband millimeter-wave signal, in amplitude and the phase information of obtaining target scattering under different frequency, realizes three-dimensional imaging.For ease of transmitting and the collection of signal, closely active millimeter wave cylinder scanning system adopts accurate single station working method, and therefore Transmit-Receive Unit array is closer to each other, and element mutual coupling effect is remarkable.In addition, cylinder scanning imaging system is driven and is done high speed rotating by scan arm in the horizontal direction, requires array structure should have lower profile and firm mechanical structure, the impact of vibrations on antenna performance in avoiding rotating.
The aerial array form using in cylinder scanning imaging system has the form such as dielectric rod antenna, taper slot antenna.The antenna of these forms has higher sky line profile, and mechanical stability is not good; Meanwhile, the irradiation structure of antenna is exposed in free space, and coupling effect between adjacent passages is comparatively obvious, makes element pattern produce distortion, and consistency is poor.
Utility model content
The problem that the utility model exists for above-mentioned prior art makes improvements, it is a kind of for the aerial array of active millimeter wave imaging system to be closely that the technical problems to be solved in the utility model is to provide, and this aerial array has overcome current array antenna mechanical structure poor stability, the defect that profile is too high, interchannel isolation is low.
For solving the problems of the technologies described above, the utility model is a kind of for the aerial array of active millimeter wave imaging system closely, this aerial array comprises receiving antenna array, transmitting antenna array, described receiving antenna array and transmitting antenna array comprise respectively several close-connected antenna elements, the both sides of described receiving antenna array are provided with shielding baffle plate, and the both sides of described transmitting antenna array are provided with shielding baffle plate.
Further, described antenna element adopts the monopole back of the body chamber active antenna that loads rectangle tapered waveguide, and the length of described antenna element is 5～12.5mm, and width is 4～9.5mm, is highly 7～11mm, and it is 0.2～0.6mm that waveguide maximum dehisces to locate thickness.
Further, the rectangular waveguide broadside of described antenna element closely connects and lines up linear array each other, and the center distance of adjacent antenna units is 4.4mm～10.7mm, and the quantity of the antenna element of described receiving antenna array and transmitting antenna array is 4 multiple.
Further, described shielding baffle plate is that width is the metallic shield baffle plate of 2～6mm, and its height is suitable with the height of described antenna element.
Further, described receiving antenna array and transmitting antenna array are arranged side by side, and the width of staggered half antenna element is arranged in the vertical direction.
Further, described aerial array also comprises feeding network and switch matrix, and described feeding network is printed on microwave base plate, and described switch matrix is connected with antenna element by feeding network.
Adopt after said structure, the aerial array that the utility model provides has firm mechanical structure and low section characteristic, and has the characteristic that channel separation is high, antijamming capability is strong, is suitable for closely active millimeter wave imaging system.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the upward view of receiving antenna array of the present utility model and transmitting antenna array.
Embodiment
For an aerial array for active millimeter wave imaging system closely, comprise transmitting antenna array 1, receiving antenna array 2, feeding network 3, switch matrix 4 and metallic shield baffle plate composition.Transmitting antenna array 1 comprises that tight connection lines up the antenna element of linear array, receiving antenna array 2 comprises that tight connection lines up the antenna element of linear array, antenna element adopts the monopole back of the body chamber active antenna that loads rectangle tapered waveguide, length is 5mm～12.5mm, width is 4mm～9.5mm, is highly 7mm～11mm.The rectangular waveguide broadside of antenna element closely connects and lines up linear array each other, and antenna element center distance is 4.4mm～10.7mm, the multiple that antenna element number is 4.Transmitting antenna array 1 is arranged side by side with receiving antenna array 2, and staggered half antenna element width is arranged in the vertical direction.Transmitting antenna array 1 and receiving antenna array 2 are respectively by millimeter wave feeding network 3 feeds that are printed in microwave base plate, and switch matrix 4 is connected with transmitting antenna array 1 and receiving antenna array 2 respectively by feeding network 3.Metallic shield baffle plate comprises inner side metallic shield baffle plate 5 and outside metallic shield baffle plate 6, transmitting antenna array 1 both sides are provided with inner side metallic shield baffle plate 5 and the outside shielded metal baffle plate 6 that width is 2～6mm, the both sides of receiving antenna array 2 are provided with inner side metallic shield baffle plate 5 and the outside shielded metal baffle plate 6 that width is 2～6mm, and it is highly all suitable with antenna element.Metallic shield baffle plate is the electromagnetic interference of suppressing antenna element mutual coupling and back-end circuit effectively, improves antenna array performance.The working method of taking single-shot list to receive when aerial array work, controlled conducting and the isolation of the each passage of transmitting-receiving by switch matrix 4, the signal producing, by transmitting antenna array 1 directive target to be detected, is received by receiving antenna array 2 after target scattering, process for back-end device.
In sum, execution mode described in the utility model only provides a kind of execution mode of the best, technology contents of the present utility model and technical characterstic disclose as above, but are familiar with the content that the personage of the technology still may disclose based on the utility model and do various replacement and the modifications that do not deviate from creation spirit of the present invention; Therefore, protection range of the present utility model is not limited to the technology contents that embodiment discloses, therefore all equivalences of doing according to shape of the present utility model, structure and principle change, is all encompassed in protection range of the present utility model.
Claims (6)
1. one kind for the aerial array of active millimeter wave imaging system closely, it is characterized in that: this aerial array comprises receiving antenna array, transmitting antenna array, described receiving antenna array and transmitting antenna array comprise respectively several close-connected antenna elements, the both sides of described receiving antenna array are provided with shielding baffle plate, and the both sides of described transmitting antenna array are provided with shielding baffle plate.
2. aerial array according to claim 1, it is characterized in that: described antenna element adopts the monopole back of the body chamber active antenna that loads rectangle tapered waveguide, the length of described antenna element is 5～12.5mm, width is 4～9.5mm, be highly 7～11mm, it is 0.2～0.6mm that waveguide maximum dehisces to locate thickness.
3. aerial array according to claim 2, it is characterized in that: the rectangular waveguide broadside of described antenna element closely connects and lines up linear array each other, the center distance of adjacent antenna units is 4.4mm～10.7mm, and the quantity of the antenna element of described receiving antenna array and transmitting antenna array is 4 multiple.
4. aerial array according to claim 1, is characterized in that: described shielding baffle plate is that width is the metallic shield baffle plate of 2～6mm, and its height is suitable with the height of described antenna element.
5. aerial array according to claim 1, is characterized in that: described receiving antenna array and transmitting antenna array are arranged side by side, and the width of staggered half antenna element is arranged in the vertical direction.
6. aerial array according to claim 1, is characterized in that: described aerial array also comprises feeding network and switch matrix, and described feeding network is printed on microwave base plate, and described switch matrix is connected with antenna element by feeding network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320832933.8U CN203617426U (en) | 2013-12-17 | 2013-12-17 | Antenna array used for close-range active millimeter wave imaging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201320832933.8U CN203617426U (en) | 2013-12-17 | 2013-12-17 | Antenna array used for close-range active millimeter wave imaging system |
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| Publication Number | Publication Date |
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| CN203617426U true CN203617426U (en) | 2014-05-28 |
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| CN201320832933.8U Expired - Fee Related CN203617426U (en) | 2013-12-17 | 2013-12-17 | Antenna array used for close-range active millimeter wave imaging system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714211A (en) * | 2015-02-03 | 2015-06-17 | 南京理工大学 | Method for designing measurement baffle of single-channel millimeter wave coding and imaging system |
| CN106707275A (en) * | 2016-05-10 | 2017-05-24 | 电子科技大学 | Active millimeter wave imaging method of planar scanning of sparse linear array |
| CN108923120A (en) * | 2018-08-06 | 2018-11-30 | 西安恒帆电子科技有限公司 | A kind of transmit-receive switch antenna array module for active millimeter wave imaging system |
| CN109449568A (en) * | 2018-08-07 | 2019-03-08 | 瑞声科技(新加坡)有限公司 | Millimeter wave array antenna and mobile terminal |
| CN110447146A (en) * | 2016-12-21 | 2019-11-12 | 英特尔公司 | Wireless communication technique, device and method |
| CN111198418A (en) * | 2020-03-09 | 2020-05-26 | 安徽省东超科技有限公司 | Optical waveguide unit array and optical lens having the same |
| CN111327345A (en) * | 2018-12-14 | 2020-06-23 | 北京三星通信技术研究有限公司 | Antenna isolation method, time delay network and equipment thereof |
| CN112134031A (en) * | 2020-08-18 | 2020-12-25 | 欧必翼太赫兹科技(北京)有限公司 | Transmit-receive antenna array apparatus and method of designing the same |
-
2013
- 2013-12-17 CN CN201320832933.8U patent/CN203617426U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104714211A (en) * | 2015-02-03 | 2015-06-17 | 南京理工大学 | Method for designing measurement baffle of single-channel millimeter wave coding and imaging system |
| CN106707275A (en) * | 2016-05-10 | 2017-05-24 | 电子科技大学 | Active millimeter wave imaging method of planar scanning of sparse linear array |
| CN106707275B (en) * | 2016-05-10 | 2019-07-19 | 电子科技大学 | A kind of Sparse array flat scanning active MMW imaging method |
| CN110447146A (en) * | 2016-12-21 | 2019-11-12 | 英特尔公司 | Wireless communication technique, device and method |
| US11955732B2 (en) | 2016-12-21 | 2024-04-09 | Intel Corporation | Wireless communication technology, apparatuses, and methods |
| CN108923120A (en) * | 2018-08-06 | 2018-11-30 | 西安恒帆电子科技有限公司 | A kind of transmit-receive switch antenna array module for active millimeter wave imaging system |
| CN109449568A (en) * | 2018-08-07 | 2019-03-08 | 瑞声科技(新加坡)有限公司 | Millimeter wave array antenna and mobile terminal |
| CN111327345A (en) * | 2018-12-14 | 2020-06-23 | 北京三星通信技术研究有限公司 | Antenna isolation method, time delay network and equipment thereof |
| CN111327345B (en) * | 2018-12-14 | 2023-06-27 | 北京三星通信技术研究有限公司 | Antenna isolation method, time delay network and equipment thereof |
| CN111198418A (en) * | 2020-03-09 | 2020-05-26 | 安徽省东超科技有限公司 | Optical waveguide unit array and optical lens having the same |
| CN112134031A (en) * | 2020-08-18 | 2020-12-25 | 欧必翼太赫兹科技(北京)有限公司 | Transmit-receive antenna array apparatus and method of designing the same |
| CN112134031B (en) * | 2020-08-18 | 2021-09-21 | 欧必翼太赫兹科技(北京)有限公司 | Transmit-receive antenna array apparatus and method of designing the same |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20151217 |
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| EXPY | Termination of patent right or utility model |