CN104183912A - Miniature double-frequency-band monopole antenna based on metamaterial unit - Google Patents
Miniature double-frequency-band monopole antenna based on metamaterial unit Download PDFInfo
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- CN104183912A CN104183912A CN201410398319.4A CN201410398319A CN104183912A CN 104183912 A CN104183912 A CN 104183912A CN 201410398319 A CN201410398319 A CN 201410398319A CN 104183912 A CN104183912 A CN 104183912A
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Abstract
The invention discloses a miniature double-frequency-band monopole antenna based on a metamaterial unit and belongs to the technical field of antennas. The miniature double-frequency-band monopole antenna structurally comprises a radiation portion, a dielectric substrate, an earth plate and a feeder. The radiation portion comprises a metal strip and a metal ring. The metal ring is located at the top end of the metal strip and is formed in the mode that a rectangular ring is broken in the middle and then is recessed inwards. The thickness of the dielectric substrate is even. The radiation portion is located above the substrate. The earth plate and a metal ring with the size identical to that of the earth plate are located below the substrate. The metal ring is located under the metal ring of radiation portion. The width of the earth plate is equal to that of the dielectric substrate. The height of the earth plate is smaller than that of the dielectric substrate. The feeder comprises an inner core wire and a shielding layer. The inner core wire and the bottom end of the radiation portion are connected. The shielding layer is connected with the earth plate. The miniature double-frequency-band monopole antenna based on the metamaterial unit is high in impedance matching performance and radiation gain, the work frequency band of the miniature double-frequency-band monopole antenna can be adjusted freely through change of the size, and the miniature double-frequency-band monopole antenna based on the metamaterial unit can be widely applied to wireless communication systems such as WLAN and WiMAX.
Description
Technical field
The invention belongs to the antenna technical field of wireless communication terminal, relate to a kind of compact dual-frequency band monopole antenna based on super material cell.
Background technology
At present, along with the development of wireless communication technology and the rise day by day of various communication standards, the function of wireless communications products becomes increasingly complex and is various, generally can both support the distinct communication standards of multiple frequency ranges.Meanwhile, the circuit of wireless communications products inside is also more complicated.In the time that designing, wireless terminal keep for the space of antenna also fewer and feweri, and more and more various and harsh to the functional requirement of antenna.
On market, wireless product is of a great variety, and user has more selection space in the time selecting product.User is not only satisfied with its performance to the requirement of wireless product, also the profile of product is had to higher requirement simultaneously, and most of users trend towards buying little, the portable wireless product of volume.Therefore no matter be technology or market, all require the future development of wireless device toward miniaturization.The Highgrade integration of circuit can be caught up with the demand of wireless device miniaturization, and the volume of antenna often becomes the bottleneck of wireless product reduction in bulk.In recent years, super material antenna becomes a study hotspot in radio frequency engineering field.Along with the development of super material application study, increasing scientific research personnel utilizes super material to carry out designing antenna, realizes the object such as miniaturization, omni-directional, high efficiency of antenna, and obtained more scientific achievement in the research work in this field to reach.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of compact dual-frequency band monopole antenna based on super material cell, this antenna adopts the electric resonance ring element based on super material to realize miniaturization, the double frequency-band work of antenna, on common monopole antenna, add two symmetrical electric resonance rings, these two rings are etched in respectively the positive and negative of dielectric-slab.Antenna after loaded ring can ensure that antenna is under the prerequisite of low section, obtains lower resonance frequency and the gain of Geng Gao.
For achieving the above object, the invention provides following technical scheme:
A compact dual-frequency band monopole antenna based on super material cell, its structure comprises radiant section, medium substrate, ground plate and feeder line;
Described radiant section comprises a bonding jumper and a becket, and becket is on the top of bonding jumper, and it is recessed to form inward by the straight-flanked ring of fracture between therefrom again, and has certain gap between the bonding jumper of depression;
Described dielectric substrate thickness is even, is radiant section above substrate, and below is ground plate and an onesize becket, and this becket be positioned at radiant section becket under position;
The width of described ground plate is the same with the width of medium substrate, and the length of aspect ratio medium substrate is little;
Described feeder line comprises internal core wire and screen, and inner core is connected with the bottom of radiant section, and screen is connected with ground plate.
Further, the length L 4 of described two beckets is 8.9-9.5mm, and width W 4 is 8.9-9.5mm, and the interior length L 5 of ring is 3-3.2mm, and insied width W6 is 3-4mm, and the metal width W5 of ring is 0.3-0.8mm, and L6 is 0.6-1mm.
Further, the thickness of described medium substrate is 0.6-1.2mm.
Further, the length of the stage casing part of the bonding jumper of described radiant section is: L2 is 7.5-8.5mm, and width is: W2 is 1.6-2mm; End portion length is: L3 is 9.9-10.9mm, and width is: W3 is 0.8-1.2mm.
Further, the length L 1 of medium substrate is 28-32mm, and width W 1 is 12-16mm, and the thickness of dielectric-slab is 0.6-1mm, and the relative dielectric constant of material is between 4-5.
Further, the length of the aspect ratio medium substrate of described metal ground plate is little, and its length L 7 is 9-13mm.
Beneficial effect of the present invention is: antenna of the present invention has the following advantages: the adding of super material electric resonance ring, the resonance frequency of antenna is reduced, and there is a more low resonant frequency point, make antenna occur two resonance peaks, and ensured that original bandwidth of antenna does not change; This antenna has good impedance matching and radiation gain; By change in size, the working frequency range of this antenna can regulate arbitrarily, can be widely used in WLAN, in the wireless communication systems such as WiMAX.
Brief description of the drawings
In order to make object of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is the overall structure figure of super material monopole antenna of the present invention;
Fig. 2 is the vertical view of this antenna;
Fig. 3 is the bottom view of this antenna;
Fig. 4 is that the reflection coefficient that obtains of emulation is with frequency variation curve figure;
Fig. 5 is the antenna pattern of this antenna of obtaining of emulation in xy plane and xz plane, and dotted line represents Cross polarization pattern, and solid line represents coplanar polarised direction figure; Xz planar radiation directional diagram when xy plane when xz plane when subgraph (a), (b), (c), (d) represent respectively xy plane in the time of frequency 2.3GHz, frequency 2.3GHz, frequency 3.3GHz and 3.3GHz;
Wherein, super rings of material, 6-medium substrate, 7-SMA interface under 1-microstrip feed line, 2-metal floor, 3-monopole antenna, the upper super rings of material of 4-, 5-.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is the overall structure figure of super material monopole antenna of the present invention, Fig. 2 is the vertical view of this antenna, Fig. 3 is the bottom view of this antenna, with reference to figure 1,2 and 3, the super material small-sized double frequency-band monopole antenna of one of the present invention, comprises microstrip line 1, metal floor 2, monopole antenna 3, upper super rings of material 4, lower super rings of material 5, medium substrate 6 and SMA interface 7.The upper surface of described medium substrate 6 is radiant section, and by microstrip line 1, monopole antenna 3 and super rings of material 4 form, and super rings of material 4 is on the top of monopole antenna, and ring 4 straight-flanked rings that ruptured by centre are recessed to form inward again.The upper and lower side of monopole antenna 3 connects respectively super material electric resonance ring 4 and microstrip line 1; Described microstrip line 1 is connected with the inner wire of SMA interface 7; Described metal floor 2 is connected with the outer conductor of SMA interface 7; The lower surface of described medium substrate 6 comprises metal floor 2 and super rings of material 5; The height of described metal floor 2 does not cover whole lower surface, and super rings of material 5 is under super rings of material 4.
Medium substrate 6 is thin cuboid, and it is long represents with L1, widely represents with W1, and material used is FR4 epoxy resin board, and relative dielectric constant is 4.4, relative permeability 1.0, and loss angle tangent is 0.02.Ground plate, the metal radiation band of the copper that upper and lower two surfaces of medium substrate arrange, the thickness of metal feeder are identical.
Described super material electric resonance ring 4 and 5 has breach in centre respectively, and extend one section to internal bend, such design can regulate the matching degree of antenna and microstrip line 1 effectively, the super material electric resonance ring 5 of lower surface can reduce the resonance frequency of antenna further, thereby realizes further the miniaturization of antenna.Metal line-width and other line widths of ring that the bending inwards of described super material electric resonance ring 4 and 5 extended are inconsistent, and interior that curved section will be wider than the surrounding part of ring.
After completing above-mentioned initial designs, use the HFSS14.0 of high-frequency electromagnetic simulation software to carry out emulation experiment, simulation study shows that the size of super rings of material has a great impact the resonance frequency of antenna, and the parameters optimum size obtaining by HFSS optimizational function is as shown in table 1.
The each parameters optimal size table of table 1 the present invention
In addition: the thickness that medium substrate surface metal covers copper is 0.017mm, and the thickness of medium substrate is 0.8mm.
According to above parameter, use HFSS to carry out simulation calculation to invented antenna, obtain the reflection coefficient curve of antenna and the antenna pattern of antenna.
Fig. 4 is the simulation curve figure of reflection coefficient of the present invention.Can see there are two resonance frequencies from figure, be respectively 2.3GHz and 3.3GHz.| S
11| under <-10dB condition, the impedance bandwidth frequency range of this antenna is respectively 2.22-2.38GHz, 3.15-3.48GHz, total impedance bandwidth and be 490MHz.
Fig. 5 is the radiation antenna pattern of xy plane and xz plane, and dotted line represents Cross polarization pattern, and solid line represents coplanar polarised direction figure.According to figure (a) (c) and (b) (d) can see that antenna is very stable at the radiation diagram at 2.3GHz and 3.3GHz place, and cross polarization is very little.Simultaneously, antenna is approximately circular at the directional diagram of xz plane, has good omni-directional, at be respectively-0.45dBi of gain and the 1.85dBi at 2.2GHz and 3.3GHz frequency place, compare the international miniaturization monopole antenna of having reported, such yield value has belonged to higher category at present.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can make various changes to it in the form and details, and not depart from the claims in the present invention book limited range.
Claims (6)
1. the compact dual-frequency band monopole antenna based on super material cell, is characterized in that: comprise radiant section, medium substrate, ground plate and feeder line;
Described radiant section comprises a bonding jumper and a becket, and becket is on the top of bonding jumper, and it is recessed to form inward by the straight-flanked ring of fracture between therefrom again;
Described dielectric substrate thickness is even, is radiant section above substrate, and below is ground plate and an onesize becket, and this becket be positioned at radiant section becket under position;
The width of described ground plate is the same with the width of medium substrate, and the length of aspect ratio medium substrate is little;
Described feeder line comprises internal core wire and screen, and inner core is connected with the bottom of radiant section, and screen is connected with ground plate.
2. a kind of compact dual-frequency band monopole antenna based on super material cell according to claim 1, it is characterized in that: the length L 4 of described two beckets is 8.9-9.5mm, width W 4 is 8.9-9.5mm, the interior length L 5 of ring is 3-3.2mm, insied width W6 is 3-4mm, the metal width W5 of ring is 0.3-0.8mm, and L6 is 0.6-1mm.
3. a kind of compact dual-frequency band monopole antenna based on super material cell according to claim 1, is characterized in that: the thickness of described medium substrate is 0.6-1.2mm.
4. a kind of compact dual-frequency band monopole antenna based on super material cell according to claim 1, is characterized in that: the length of the stage casing part of the bonding jumper of described radiant section is: L2 is 7.5-8.5mm, and width is: W2 is 1.6-2mm; End portion length is: L3 is 9.9-10.9mm, and width is: W3 is 0.8-1.2mm.
5. a kind of compact dual-frequency band monopole antenna based on super material cell according to claim 1, it is characterized in that: the length L 1 of medium substrate is 28-32mm, width W 1 is 12-16mm, and the thickness of dielectric-slab is 0.6-1mm, and the relative dielectric constant of material is between 4-5.
6. a kind of compact dual-frequency band monopole antenna based on super material cell according to claim 1, is characterized in that: the length of the aspect ratio medium substrate of described metal ground plate is little, and its length L 7 is 9-13mm.
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| CN201410398319.4A CN104183912B (en) | 2014-08-13 | 2014-08-13 | A kind of miniaturized dual-band monopole antenna based on metamaterial unit |
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| CN201410398319.4A CN104183912B (en) | 2014-08-13 | 2014-08-13 | A kind of miniaturized dual-band monopole antenna based on metamaterial unit |
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| CN104183912B CN104183912B (en) | 2016-08-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428797A (en) * | 2016-01-25 | 2016-03-23 | 西安理工大学 | Three frequency band metamaterial-loaded small-sized monopole antenna |
| CN105486654A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Metamaterial-based adjustable non-dispersive infrared gas sensor |
| CN106229640A (en) * | 2016-08-31 | 2016-12-14 | 重庆大学 | double-layer wideband microstrip antenna |
| CN106450777A (en) * | 2016-08-31 | 2017-02-22 | 重庆大学 | Circular polarization microstrip antenna |
| CN113258298A (en) * | 2021-06-01 | 2021-08-13 | 光谷技术有限公司 | Antenna structure and gateway equipment |
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| US20040196187A1 (en) * | 2003-04-01 | 2004-10-07 | D-Link Corporation | Planar monopole antenna of dual frequency |
| CN101291014A (en) * | 2007-04-16 | 2008-10-22 | 三星泰利斯株式会社 | Multi-resonant broadband antenna |
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| CN102110899A (en) * | 2010-12-23 | 2011-06-29 | 哈尔滨工程大学 | Ultra broadband antenna of integrated filter |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040196187A1 (en) * | 2003-04-01 | 2004-10-07 | D-Link Corporation | Planar monopole antenna of dual frequency |
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| CN101291014A (en) * | 2007-04-16 | 2008-10-22 | 三星泰利斯株式会社 | Multi-resonant broadband antenna |
| CN102110899A (en) * | 2010-12-23 | 2011-06-29 | 哈尔滨工程大学 | Ultra broadband antenna of integrated filter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486654A (en) * | 2015-10-23 | 2016-04-13 | 成都市亿泰科技有限公司 | Metamaterial-based adjustable non-dispersive infrared gas sensor |
| CN105486654B (en) * | 2015-10-23 | 2019-02-15 | 深圳市华中航技术检测有限公司 | Adjustable non-dispersive infrared gas sensor based on Meta Materials |
| CN105428797A (en) * | 2016-01-25 | 2016-03-23 | 西安理工大学 | Three frequency band metamaterial-loaded small-sized monopole antenna |
| CN105428797B (en) * | 2016-01-25 | 2018-09-18 | 中山市博安通通信技术有限公司 | The miniaturization unipole antenna of three frequency range Meta Materials load |
| CN106229640A (en) * | 2016-08-31 | 2016-12-14 | 重庆大学 | double-layer wideband microstrip antenna |
| CN106450777A (en) * | 2016-08-31 | 2017-02-22 | 重庆大学 | Circular polarization microstrip antenna |
| CN113258298A (en) * | 2021-06-01 | 2021-08-13 | 光谷技术有限公司 | Antenna structure and gateway equipment |
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| Publication number | Publication date |
|---|---|
| CN104183912B (en) | 2016-08-24 |
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Effective date of registration: 20201218 Address after: No. 188 Fengye Road, Baoshan District, Shanghai 201900 Patentee after: SHANGHAI DONGZHOU LAWTON TELECOM Co.,Ltd. Address before: 400044 No. 174 Shapingba street, Shapingba District, Chongqing Patentee before: Chongqing University |