CN104009288A - Millimeter-wave wide-beam and high-gain lens antenna - Google Patents
Millimeter-wave wide-beam and high-gain lens antenna Download PDFInfo
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- CN104009288A CN104009288A CN201410203728.4A CN201410203728A CN104009288A CN 104009288 A CN104009288 A CN 104009288A CN 201410203728 A CN201410203728 A CN 201410203728A CN 104009288 A CN104009288 A CN 104009288A
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Abstract
The invention provides a millimeter-wave wide-beam and high-gain lens antenna. The millimeter-wave wide-beam and high-gain lens antenna comprises a micro-strip radiating antenna array, a planar slot array, a micro-strip feeder array, a quasi-hemispheric dielectric lens, a first dielectric substrate, a second dielectric substrate, a third dielectric substrate, a fourth dielectric substrate and an expansion part. The expansion part, the first dielectric substrate, the micro-strip radiating antenna, the second dielectric substrate, the planar slot array, the third dielectric substrate, the micro-strip feeder array and the fourth dielectric substrate are arranged in sequence. The quasi-hemispheric dielectric lens is located at the top end of the expansion part. The micro-strip feeder array stimulates the micro-strip radiating antenna for radiation through the planar slot array, and radiated electromagnetic waves achieve wide beams through the quasi-hemispheric dielectric lens and then are radiated in a directed mode. The millimeter-wave wide-beam and high-gain lens antenna has the characteristics of high gains and wide beams.
Description
Technical field
The present invention relates to a kind of antenna, particularly, relate to a kind of millimeter wave broad beam high-gain lens antenna.
Background technology
60GHz millimeter wave radio communication has that frequency range is large, transmission rate is fast, fail safe and the advantage such as anti-interference is good, will become the application focus in the fields such as indoor wireless access, car radar, imaging of medical.2013, " National 863 plan " listed 60GHz millimeter wave radio communication in the great scientific research plan of 2014,2015 and 2016.
How to realize broad beam high-gain directed radiation at 60GHz millimeter wave frequency band, this is a technical problem of not yet resolving so far, for this problem, the present invention proposes a kind of millimeter wave broad beam high-gain lens antenna, show according to Electromagnetic Simulation result, antenna of the present invention has high-gain and broad beam characteristic and easily realization.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of millimeter wave broad beam high-gain lens antenna.
According to an aspect of the present invention, a kind of millimeter wave broad beam high-gain lens antenna is provided, it is characterized in that, it comprises micro-band radiating antenna battle array, plane gap battle array, microstrip feed line battle array, accurate hemispherical dielectric lens, first medium substrate, second medium substrate, the 3rd medium substrate, the 4th medium substrate, expansion, expansion, first medium substrate, micro-band radiating antenna battle array, second medium substrate, plane gap battle array, the 3rd medium substrate, microstrip feed line battle array, the 4th medium substrate discharges successively, accurate hemispherical dielectric lens are positioned on the top of expansion, described microstrip feed line battle array encourages micro-band radiating antenna battle array to carry out radiation by plane gap battle array, the electromagnetic wave of institute's radiation is realized broad beam by described accurate hemisphere face di-lens and is carried out directed radiation again.
Preferably, the diameter of described accurate hemispherical dielectric lens equals the length of expansion, and the material of accurate hemispherical dielectric lens is identical with the material of expansion.
Preferably, described plane gap battle array is a plane gap battle array that contains the first plane gap, the second plane gap, the 3rd plane gap, the 4th plane gap, the shape of each plane gap is wherein rectangle, their geometric center is all evenly distributed on the interior same circumference of affiliated plane, and, the broadside of the broadside of the first plane gap and the 3rd plane gap all along continuous straight runs is placed, and the broadside of the broadside of the second plane gap and the 4th plane gap is all vertically placed.
Preferably, describedly micro-ly formed by first micro-radiation element, second micro-radiation element, the 3rd micro-radiation element, the 4th micro-radiation element of being be with be be with radiating antenna battle array, under their geometric center is evenly distributed in plane on same circumference; Wherein first micro-broadside and all along continuous straight runs placement of the 3rd micro-broadside with radiation element with radiation element, and second micro-broadside and the 4th micro-broadside with radiation element with radiation element all vertically placed; The geometric center of each micro-geometric center with radiation element and corresponding described plane gap is on the same line vertical with plane gap.
Preferably, described microstrip feed line battle array has the first microstrip feed line, the second microstrip feed line, the 3rd microstrip feed line, the 4th microstrip feed line, and the shape of four microstrip feed lines is rectangle, and their geometric center is evenly distributed on the interior same circumference of affiliated plane; Wherein all along continuous straight runs placements of the long limit of the long limit of the first microstrip feed line and the 3rd microstrip feed line, all vertically place on the long limit of the long limit of the second microstrip feed line and the 4th microstrip feed line; The center of every section of microstrip feed line broadside with corresponding described micro-geometric center with radiation element and plane gap in the same plane vertical with plane gap.
Preferably, the thickness of described first medium substrate is identical with the thickness of the 4th medium substrate, the thickness of second medium substrate is identical with the thickness of the 3rd medium substrate, and the thickness of second medium substrate, the thickness of the 3rd medium substrate are all the twice of the thickness of first medium substrate; The diameter of the diameter of first medium substrate, the diameter of second medium substrate, the 3rd medium substrate, the diameter of the 4th medium substrate are all identical with the diameter of described accurate hemispherical dielectric lens; First medium substrate, second medium substrate, the 3rd medium substrate, the 4th medium substrate provide physical support for described micro-band radiating antenna battle array, plane gap and microstrip feed line.
Preferably, the corresponding plane gap of described each micro-band radiation element and a microstrip feed line, the distance between the geometric center of plane gap and the axis of accurate hemispherical dielectric lens is fixed.
Compared with prior art, the present invention has following beneficial effect: millimeter wave broad beam high-gain lens antenna of the present invention is simple in structure, small size low profile, and multiport broadband, has high-gain and broad beam characteristic.
Brief description of the drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is the structural representation of millimeter wave broad beam high-gain lens antenna of the present invention.
Fig. 2 is the structural representation with radiating antenna battle array, plane gap battle array, microstrip feed line battle array by slot excitation.
Fig. 3 is the schematic diagram of the return loss performance of millimeter wave broad beam high-gain lens antenna of the present invention.
Fig. 4 is isolation figure between different port of the present invention.
Fig. 5 is the directional diagram of the present invention at 60GHz place (phi=0 °).
Fig. 6 is the directional diagram of the present invention at 60GHz place (phi=90 °).
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
As depicted in figs. 1 and 2, millimeter wave broad beam high-gain lens antenna of the present invention comprises micro-band radiating antenna battle array 1, plane gap battle array 2, microstrip feed line battle array 3, accurate hemispherical dielectric lens 4, first medium substrate 5, second medium substrate 6, the 3rd medium substrate 7, the 4th medium substrate 8, expansion 9, expansion 9, first medium substrate 5, micro-band radiating antenna battle array 1, second medium substrate 6, plane gap battle array 2, the 3rd medium substrate 7, microstrip feed line battle array 3, the 4th medium substrate 8 discharges successively, accurate hemispherical dielectric lens 4 are positioned on the top of expansion 9, described microstrip feed line battle array 3 encourages micro-band radiating antenna battle array 1 to carry out radiation by plane gap battle array 2, the electromagnetic wave of institute's radiation is realized broad beam by described accurate hemispherical dielectric lens 4 and is carried out directed radiation again.
The diameter of accurate hemispherical dielectric lens equals the length of expansion, and the material of accurate hemispherical dielectric lens is identical with the material of expansion.The tip position of accurate hemispherical dielectric lens in described antenna, by micro-electromagnetic wave broad beam directed radiation with the radiation of radiating antenna battle array in space.
Plane gap battle array is a plane gap battle array that contains four plane gaps (the first plane gap 21, the second plane gap 22, the 3rd plane gap 23, the 4th plane gap 24), the shape of each plane gap is wherein rectangle, their geometric center is all evenly distributed on the interior same circumference of affiliated plane, and, the broadside of the broadside of the first plane gap 21 and the 3rd plane gap 23 all along continuous straight runs is placed, and the broadside of the broadside of the second plane gap 22 and the 4th plane gap 24 is all vertically placed.
Micro-band radiating antenna battle array is made up of four rectangular microstrip radiation elements (first micro-band radiation element 11, second micro-band radiation element 12, the 3rd micro-band radiation element 13, the 4th micro-band radiation element 14), and their geometric center is evenly distributed on the interior same circumference of affiliated plane; Wherein first micro-broadside and all along continuous straight runs placement of the 3rd micro-broadside with radiation element 13 with radiation element 11, and second micro-broadside and the 4th micro-broadside with radiation element 14 with radiation element 12 all vertically placed; The geometric center of each micro-geometric center with radiation element and corresponding described plane gap is on the same line vertical with plane gap.
Microstrip feed line battle array has four microstrip feed lines (the first microstrip feed line 31, the second microstrip feed line 32, the 3rd microstrip feed line 33, the 4th microstrip feed line 34), the shape of four microstrip feed lines is rectangle, and their geometric center is evenly distributed on the interior same circumference of affiliated plane; Wherein all along continuous straight runs placements of the long limit of the long limit of the first microstrip feed line 31 and the 3rd microstrip feed line 33, all vertically place on the long limit of the long limit of the second microstrip feed line 32 and the 4th microstrip feed line 34; The center of every section of microstrip feed line broadside with corresponding described micro-geometric center with radiation element and plane gap in the same plane vertical with plane gap.
The thickness of first medium substrate 5 is identical with the thickness of the 4th medium substrate 8, the thickness of second medium substrate 6 is identical with the thickness of the 3rd medium substrate 7, and the thickness of second medium substrate 6, the thickness of the 3rd medium substrate 7 are all the twice of the thickness of first medium substrate 5; The diameter of the diameter of first medium substrate 5, the diameter of second medium substrate 6, the 3rd medium substrate 7, the diameter of the 4th medium substrate 8 are all identical with the diameter of described accurate hemispherical dielectric lens; First medium substrate, second medium substrate, the 3rd medium substrate, the 4th medium substrate provide physical support for described micro-band radiating antenna battle array, plane gap and microstrip feed line.
The corresponding plane gap of each micro-band radiation element and a microstrip feed line, the distance between the geometric center of plane gap and the axis of accurate hemispherical dielectric lens is fixed.Wherein, L
p-A, W
p-Abe respectively micro-length and width with radiation; L
a-A, W
a-Abe respectively length and the width of plane gap; L
f-A, W
f-Abe respectively length and the width of microstrip feed line.Four micro-band radiation elements, four plane gaps and four microstrip feed lines form the first excitation port 41, the second excitation port 42, the 3rd excitation port 43 and the 4th excitation port 44.
As shown in Figure 3 and Figure 4, in engineering, the frequency range of be less than-10db of General Definition return loss is working frequency range.The working frequency range of lens antenna of the present invention is 57.5-66GHz as seen from the figure, substantially contains the free licensed band of whole 57-66GHz.Wherein, the reflection coefficient of the first port when the first curve S 1 is other port match, is also return loss.When the second curve S 2, the 3rd curve S 3 are illustrated respectively in the second port, the 3rd port match, the first port is to the forward transmission coefficient of the second port, the i.e. isolation of the first port and the second port, the 3rd port.
As shown in Figure 5 and Figure 6, can find out that the directional diagram in the time of phi=0 ° and phi=90 ° is substantially identical, show that antenna characteristic in a coning angle plane is basically identical.From figure, can obtain now antenna gain is 14.4dbi, and 3db width is 28.8 °, and the beamwidth that gain is greater than 10dbi can reach 35 °.
The design process of millimeter wave broad beam high-gain lens antenna of the present invention is as follows:
The first, selected lens antenna.Lens antenna has the ability that is placed in surface antenna type on lens plane or surface antenna and is reached to the distance of lens centre axle beam scanning effect by change, in order to ensure focus characteristics, generally select eccentricity l and medium DIELECTRIC CONSTANT ε to reach the ellipsoid lens of a certain ratio, this proportionate relationship is
in reality, for easy to process, select the hemispherical lens of expansion.Accurate packaged lens after expansion approaches ellipsoid lens, and the spherical wave that such lens can go out the aerial radiation being placed in its focus is converted into directional beam in the far-field region of antenna.
The second, determine material and the size of di-lens.In order to reduce the loss in ripple communication process, the requirement that di-lens material is selected is low conductivity.On the other hand, in view of theoretical and actual consideration, in wireless communication system, be more prone to select the material of high-k, therefore the present invention selects silicon materials manufacture, DIELECTRIC CONSTANT ε=11.7.Refractive index
the extension length L of hemispherical dielectric lens and hemisphere radius R need to meet certain proportionate relationship.Consider again and can improve antenna scanning performance by the method that reduces cylinder development length simultaneously.Comprehensive above factor, and in conjunction with documents and materials and some preliminary emulation, finally determine R=6mm, L=1.5mm.
The 3rd, determine micro-size and position relationship thereof with radiation element, plane gap and microstrip feed line.Micro-band radiating element length is 0.5mm, and width is 0.45mm; Plane gap length is 0.8mm, and width is 0.14mm; The selection of microstrip feed line size is mainly from the viewpoint of its characteristic impedance.Microstrip feed line length is 2.4mm, and width is 0.18mm, ensures that its characteristic impedance is 50 ohm.
The 4th, determine the optimal distance of plane gap geometric center to di-lens axis.Due to the focus characteristics of lens, can there is significant variation to the variation of di-lens axial line distance along with plane gap geometric center in the performance of antenna, and its variation is mainly manifested on beam scanning width, main beam direction and the yield value of antenna.By observing and carefully analyze optimization Simulation result, find the increase along with described distance, main beam direction departs from Z-direction angle to be increased, and beam scanning width increases, but the corresponding reduction of meanwhile gain meeting, this just requires to do a compromise between beam scanning width and yield value.Choosing plane gap geometric center is 0.8mm to the distance value of di-lens axis.
The 5th, determine radiating element number and energisation mode.First the lens antenna of single radiating element is carried out to preliminary emulation, recognize that the yield value of single unit antenna has reached higher level, there is the characteristic of high-gain, but that shortcoming is the beamwidth of now antenna is very narrow.So, secondly, to comprise that lens axis the plane vertical with plane gap, as symmetrical centre, add second radiating element in the symmetric position of radiating element, becoming two cell arrays, two ports add constant amplitude reverse energization emulation.What do like this is to wish to keep and to improve antenna direction characteristic, reach expansion beamwidth simultaneously, further increase the effect of yield value.For ensure antenna one compared with polarizers of big angle scope in adequacy and the integrality of collection signal, must make antenna pattern at top a coning angle space internal characteristic basically identical.Therefore, last, according to same thinking, two unit radiation element arrays, taking lens axis as rotating shaft, turning clockwise 90 ° in respective planes separately, are become to four cell arrays, the excitation of opposite end mouth difference.
Millimeter wave broad beam high-gain lens antenna of the present invention in the working frequency range of 57.5-66GHz, be all less than-10db of the return loss of antenna of the present invention, and the beamwidth that its yield value is greater than 10dbi can reach 35 °.The present invention has realized high-gain and broad beam electromagnetic radiation in 60GHz frequency range, can be used for 60GHz millimetre-wave attenuator.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1. a millimeter wave broad beam high-gain lens antenna, it is characterized in that, it comprises micro-band radiating antenna battle array, plane gap battle array, microstrip feed line battle array, accurate hemispherical dielectric lens, first medium substrate, second medium substrate, the 3rd medium substrate, the 4th medium substrate, expansion, expansion, first medium substrate, micro-band radiating antenna battle array, second medium substrate, plane gap battle array, the 3rd medium substrate, microstrip feed line battle array, the 4th medium substrate discharges successively, accurate hemispherical dielectric lens are positioned on the top of expansion, described microstrip feed line battle array encourages micro-band radiating antenna battle array to carry out radiation by plane gap battle array, the electromagnetic wave of institute's radiation is realized broad beam by described accurate hemisphere face di-lens and is carried out directed radiation again.
2. millimeter wave broad beam high-gain lens antenna according to claim 1, is characterized in that, the diameter of described accurate hemispherical dielectric lens equals the length of expansion, and the material of accurate hemispherical dielectric lens is identical with the material of expansion.
3. millimeter wave broad beam high-gain lens antenna according to claim 1, it is characterized in that, described plane gap battle array is one and contains the first plane gap, the second plane gap, the 3rd plane gap, the plane gap battle array of the 4th plane gap, the shape of each plane gap is wherein rectangle, their geometric center is all evenly distributed on the interior same circumference of affiliated plane, and, the broadside of the broadside of the first plane gap and the 3rd plane gap all along continuous straight runs is placed, and the broadside of the broadside of the second plane gap and the 4th plane gap is all vertically placed.
4. millimeter wave broad beam high-gain lens antenna according to claim 3, it is characterized in that, describedly micro-ly formed by first micro-radiation element, second micro-radiation element, the 3rd micro-radiation element, the 4th micro-radiation element of being be with be be with radiating antenna battle array, under their geometric center is evenly distributed in plane on same circumference; Wherein first micro-broadside and all along continuous straight runs placement of the 3rd micro-broadside with radiation element with radiation element, and second micro-broadside and the 4th micro-broadside with radiation element with radiation element all vertically placed; The geometric center of each micro-geometric center with radiation element and corresponding described plane gap is on the same line vertical with plane gap.
5. millimeter wave broad beam high-gain lens antenna according to claim 4, it is characterized in that, described microstrip feed line battle array has the first microstrip feed line, the second microstrip feed line, the 3rd microstrip feed line, the 4th microstrip feed line, the shape of four microstrip feed lines is rectangle, and their geometric center is evenly distributed on the interior same circumference of affiliated plane; Wherein all along continuous straight runs placements of the long limit of the long limit of the first microstrip feed line and the 3rd microstrip feed line, all vertically place on the long limit of the long limit of the second microstrip feed line and the 4th microstrip feed line; The center of every section of microstrip feed line broadside with corresponding described micro-geometric center with radiation element and plane gap in the same plane vertical with plane gap.
6. millimeter wave broad beam high-gain lens antenna according to claim 5, it is characterized in that, the thickness of described first medium substrate is identical with the thickness of the 4th medium substrate, the thickness of second medium substrate is identical with the thickness of the 3rd medium substrate, and the thickness of second medium substrate, the thickness of the 3rd medium substrate are all the twice of the thickness of first medium substrate; The diameter of the diameter of first medium substrate, the diameter of second medium substrate, the 3rd medium substrate, the diameter of the 4th medium substrate are all identical with the diameter of described accurate hemispherical dielectric lens; First medium substrate, second medium substrate, the 3rd medium substrate, the 4th medium substrate provide physical support for described micro-band radiating antenna battle array, plane gap and microstrip feed line.
7. millimeter wave broad beam high-gain lens antenna according to claim 6, it is characterized in that, the corresponding plane gap of described each micro-band radiation element and a microstrip feed line, the distance between the geometric center of plane gap and the axis of accurate hemispherical dielectric lens is fixed.
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Cited By (10)
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| CN105789843A (en) * | 2016-03-29 | 2016-07-20 | 北京工业大学 | Micro directional antenna based on left-handed materials |
| CN107369914A (en) * | 2017-07-03 | 2017-11-21 | 杭州麦宇电子科技有限公司 | The transmitting-receiving of plane feed collects ellipsoid lens antenna in pairs |
| CN109378585A (en) * | 2018-10-19 | 2019-02-22 | 电子科技大学 | The circular polarisation Luneberg lens antenna of half space wave cover |
| CN109701162A (en) * | 2018-12-13 | 2019-05-03 | 西北核技术研究所 | In a kind of irradiation chamber inside effector field strength local focal device and its construction method |
| CN110085976A (en) * | 2018-01-25 | 2019-08-02 | 南京理工大学 | Packaged lens multibeam antenna is scanned in millimeter wave omnidirectional |
| CN110350319A (en) * | 2019-06-10 | 2019-10-18 | 华南理工大学 | A kind of millimeter wave omnidirectional lens antenna |
| CN111429623A (en) * | 2020-05-12 | 2020-07-17 | 贵州国卫信安科技有限公司 | System for preventing wireless key signal from being cracked and interfered and using method thereof |
| CN111585042A (en) * | 2020-05-25 | 2020-08-25 | 北京高信达通信科技股份有限公司 | Multi-beam dielectric lens antenna and manufacturing method thereof |
| CN113381172A (en) * | 2021-05-27 | 2021-09-10 | 深圳市信维通信股份有限公司 | Integrated lens antenna and communication equipment |
| CN113506975A (en) * | 2021-07-16 | 2021-10-15 | 重庆吉芯科技有限公司 | Millimeter wave on-chip micro-array antenna |
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| CN105789843A (en) * | 2016-03-29 | 2016-07-20 | 北京工业大学 | Micro directional antenna based on left-handed materials |
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| CN107369914B (en) * | 2017-07-03 | 2019-08-30 | 杭州麦宇电子科技有限公司 | The transmitting-receiving of plane feed collects ellipsoid lens antenna in pairs |
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| CN110350319A (en) * | 2019-06-10 | 2019-10-18 | 华南理工大学 | A kind of millimeter wave omnidirectional lens antenna |
| CN111429623A (en) * | 2020-05-12 | 2020-07-17 | 贵州国卫信安科技有限公司 | System for preventing wireless key signal from being cracked and interfered and using method thereof |
| CN111585042A (en) * | 2020-05-25 | 2020-08-25 | 北京高信达通信科技股份有限公司 | Multi-beam dielectric lens antenna and manufacturing method thereof |
| CN113381172A (en) * | 2021-05-27 | 2021-09-10 | 深圳市信维通信股份有限公司 | Integrated lens antenna and communication equipment |
| CN113506975A (en) * | 2021-07-16 | 2021-10-15 | 重庆吉芯科技有限公司 | Millimeter wave on-chip micro-array antenna |
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