CN104183912B - A kind of miniaturized dual-band monopole antenna based on metamaterial unit - Google Patents
A kind of miniaturized dual-band monopole antenna based on metamaterial unit Download PDFInfo
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- CN104183912B CN104183912B CN201410398319.4A CN201410398319A CN104183912B CN 104183912 B CN104183912 B CN 104183912B CN 201410398319 A CN201410398319 A CN 201410398319A CN 104183912 B CN104183912 B CN 104183912B
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Abstract
The invention discloses a kind of miniaturized dual-band monopole antenna based on metamaterial unit, belong to antenna technical field.The structure of this antenna includes radiant section, medium substrate, earth plate and feeder line；Described radiant section includes a bonding jumper and a becket, and becket is on the top of bonding jumper, and it is caved in the most inward by the straight-flanked ring of fracture between therefrom and is formed；Described dielectric substrate thickness is uniform, is radiant section above substrate, and lower section is earth plate and an an equal amount of becket, and this becket is positioned at the position directly below of radiant section becket；The width of described earth plate is as the width of medium substrate, and the length of aspect ratio medium substrate is little；Described feeder line includes that internal core wire and screen layer, inner core are connected with the bottom of radiant section, and screen layer is connected with earth plate.This antenna has good impedance matching and radiation gain, and by change in size, can arbitrarily regulate to other working frequency range, can be widely used in the wireless communication systems such as WLAN, WiMAX.
Description
Technical field
The invention belongs to the antenna technical field of wireless communication terminal, relate to a kind of miniaturization based on metamaterial unit double
Frequency band monopole antenna.
Background technology
At present, along with development and the rise day by day of various communication standard of wireless communication technology, wireless communications products
Function becomes increasingly complex and various, typically can support the distinct communication standards of multiple frequency range.Meanwhile, radio communication is produced
Circuit within product is the most increasingly complex.The space keeping for antenna when wireless terminal designs is the most fewer and feweri, and to antenna
Functional requirement is more and more various and harsh.
Commercially, wireless product is of a great variety, and user has more select space when selecting product.User is to nothing
Its performance, the most also profile to product are not only satisfied with in the requirement of line product has higher requirement, most of users to become
To in buying volume wireless product little, portable.The most either technology or market, is desirable that wireless device is toward small-sized
The direction changed is developed.The Highgrade integration of circuit can catch 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 super
The development of materials application research, increasing scientific research personnel utilizes Meta Materials to carry out designing antenna, to reach to realize the little of antenna
The purposes such as type, omni-directional, high efficiency, and the research work in this field achieves more scientific achievement.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of miniaturized dual-band monopole sky based on metamaterial unit
Line, this antenna uses electric resonance ring element based on Meta Materials to realize the miniaturization of antenna, dual-frequency band operation, at common monopole
Adding two symmetrical electric resonance rings on antenna, the two ring is etched in the positive and negative of dielectric-slab respectively.Antenna after loaded ring is permissible
Ensure that antenna is on the premise of low section, it is thus achieved that lower resonant frequency and higher gain.
For reaching above-mentioned purpose, the present invention provides following technical scheme:
A kind of miniaturized dual-band monopole antenna based on metamaterial unit, its structure includes radiant section, medium base
Plate, earth plate and feeder line；
Described radiant section includes a bonding jumper and a becket, and becket is on the top of bonding jumper, and it is by being therefrom interrupted
The straight-flanked ring split caves in the most inward certain gap between formation, and the bonding jumper caved in；
Described dielectric substrate thickness is uniform, is radiant section above substrate, lower section be earth plate and one same big
Little becket, and this becket is positioned at the position directly below of radiant section becket；
The width of described earth plate is as the width of medium substrate, and the length of aspect ratio medium substrate is little；
Described feeder line includes that internal core wire and screen layer, inner core are connected with the bottom of radiant section, screen layer and earth plate
It is connected.
Further, length L4 of said two becket is 8.9-9.5mm, and width W4 is 8.9-9.5mm, the interior length of ring
L5 is 3-3.2mm, and insied width W6 is 3-4mm, metal width W5 of ring be 0.3-0.8mm, L6 be 0.6-1mm.
Further, the thickness of described medium substrate is 0.6-1.2mm.
Further, the stage casing part of the bonding jumper of described radiant section is a length of: L2 is 7.5-8.5mm, and width is: W2
For 1.6-2mm；End portion is a length of: L3 is 9.9-10.9mm, and width is: W3 is 0.8-1.2mm.
Further, length L1 of medium substrate is 28-32mm, and width W1 is 12-16mm, and the thickness of dielectric-slab is 0.6-
1mm, 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 L7 is 9-13mm.
The beneficial effects of the present invention is: antenna of the present invention has the advantage that adding of Meta Materials electric resonance ring
Enter, make the resonance frequency of antenna reduce, and occur in that a more low resonant frequency point, make antenna occur in that two resonance peaks,
And ensure that original bandwidth of antenna is not changed in；This antenna has good impedance matching and radiation gain；Pass through size
Change, the working frequency range of this antenna can arbitrarily regulate, and can be widely applied in the wireless communication systems such as WLAN, WiMAX.
Accompanying drawing explanation
In order to make the purpose of the present invention, technical scheme and beneficial effect clearer, the present invention provides drawings described below to carry out
Illustrate:
Fig. 1 is the overall structure figure of Meta Materials monopole antenna of the present invention；
Fig. 2 is the top view of this antenna；
Fig. 3 is the bottom view of this antenna；
Fig. 4 is to emulate the reflection coefficient obtained with frequency variation curve figure；
Fig. 5 be this antenna of obtaining of emulation at x/y plane and the antenna pattern of xz plane, dotted line represents cross polarization side
Xiang Tu, solid line represents coplanar polarised direction figure；Subgraph (a), (b), (c), (d) represent the xy when frequency 2.3GHz respectively and put down
Xz plane radiation patterns when x/y plane when xz plane when face, frequency 2.3GHz, frequency 3.3GHz and 3.3GHz；
Wherein, Meta Materials ring, 6-under 1-microstrip feed line, 2-metal floor, 3-monopole antenna, 4-upper Meta Materials ring, 5-
Medium substrate, 7-SMA interface.
Detailed description of the invention
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 Meta Materials monopole antenna of the present invention, and Fig. 2 is the top view of this antenna, Fig. 3
For the bottom view of this antenna, with reference to Fig. 1,2 and 3, a kind of Meta Materials miniaturized dual-band monopole antenna of the present invention, bag
Include microstrip line 1, metal floor 2, monopole antenna 3, upper Meta Materials ring 4, lower Meta Materials ring 5, medium substrate 6 and SMA interface 7.
The upper surface of described medium substrate 6 is radiant section, is made up of microstrip line 1, monopole antenna 3 and Meta Materials ring 4, Meta Materials ring
4 on the top of monopole antenna, and the straight-flanked ring that ring 4 is ruptured by centre caves in the most inward and formed.The upper and lower side of monopole antenna 3 divides
Lian Jie Meta Materials 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 are connected with the outer conductor of SMA interface 7；The lower surface of described medium substrate 6 includes metal floor 2 and Meta Materials ring 5；Described
The height of metal floor 2 is not covered with whole lower surface, and Meta Materials ring 5 is in the underface of Meta Materials ring 4.
Medium substrate 6 is thin cuboid, and it is long represents with L1, wide represents with W1, and material used is FR4 epoxy resin
Plate, relative dielectric constant is 4.4, relative permeability 1.0, and loss angle tangent is 0.02.Upper and lower two surface configurations of medium substrate
The earth plate of copper, metal radiation band, metal feeder thickness identical.
Described Meta Materials electric resonance ring 4 and 5 has breach respectively in centre, and internally bending extends one section, this
The matching degree being designed to effectively regulate antenna with microstrip line 1 of sample, the Meta Materials electric resonance ring 5 of lower surface can enter one
Step ground reduces the resonant frequency of antenna, thus realizes the miniaturization of antenna further.Described Meta Materials electric resonance ring 4 and 5
Bend inwards extend metal line-width inconsistent with other line widths of ring, four perimembranous of that section of ring to be wider than of inflection
Point.
After completing above-mentioned initial designs, high-frequency electromagnetic simulation software HFSS14.0 is used to carry out emulation experiment, emulation
Research shows that the resonant frequency of antenna is had a great impact by the size of Meta Materials ring, optimizes merit by HFSS getable every
Parameters optimal size is as shown in table 1.
Table 1 present invention each parameters optimal size table
Additionally: it is 0.017mm that medium substrate surface metal covers the thickness of copper, the thickness of medium substrate is 0.8mm.
According to above parameter, using the HFSS antenna to being invented to carry out simulation calculation, the reflection coefficient obtaining antenna is bent
Line and the antenna pattern of antenna.
Fig. 4 is the simulation curve figure of reflection coefficient of the present invention.From figure it can be seen that there are two resonance frequencies, it is respectively
2.3GHz and 3.3GHz.| S11| <under the conditions of-10dB, 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 directional diagram of x/y plane and xz plane, and dotted line represents that Cross polarization pattern, solid line represent altogether
Surface polarization directional diagram.According to figure (a) (c) with (b) (d) it can be seen that antenna radiation diagram at 2.3GHz and 3.3GHz is the most steady
Fixed, and cross polarization is the least.Meanwhile, antenna is approximately circular at the directional diagram of xz plane, has good omni-directional,
Gain at 2.2GHz and 3.3GHz frequency is respectively-0.45dBi and 1.85dBi, compares the international miniaturization one pole reported
For sub antenna, such yield value is already belonging to higher category at present.
Finally illustrate, preferred embodiment above only in order to technical scheme to be described and unrestricted, although logical
Cross above preferred embodiment the present invention to be described in detail, it is to be understood by those skilled in the art that can be
In form and it is made various change, without departing from claims of the present invention limited range in details.
Claims (6)
1. a miniaturized dual-band monopole antenna based on metamaterial unit, it is characterised in that: include radiant section, medium
Substrate, earth plate and feeder line；
Described radiant section includes a bonding jumper and a becket, and becket is on the top of bonding jumper, and it is by fracture between therefrom
Straight-flanked ring caves in formation the most inward；
Described dielectric substrate thickness is uniform, is radiant section above medium substrate, lower section be earth plate and one same big
Little becket, and this becket is positioned at the position directly below of radiant section becket；Above and below described medium substrate
Becket bend inwards the peripheral portion of line width becket to be wider than extended；
The width of described earth plate is as the width of medium substrate, and the length of aspect ratio medium substrate is little；
Described feeder line includes that internal core wire and screen layer, inner core are connected with the bottom of radiant section, and screen layer is connected with earth plate
Connect.
A kind of miniaturized dual-band monopole antenna based on metamaterial unit the most according to claim 1, its feature exists
In: length L4 of said two becket is 8.9-9.5mm, and width W4 is 8.9-9.5mm, and interior length L5 of ring is 3-3.2mm,
Insied width W6 is 3-4mm, metal width W5 of ring be 0.3-0.8mm, L6 be 0.6-1mm.
A kind of miniaturized dual-band monopole antenna based on metamaterial unit the most according to claim 1, its feature exists
In: the thickness of described medium substrate is 0.6-1.2mm.
A kind of miniaturized dual-band monopole antenna based on metamaterial unit the most according to claim 1, its feature exists
A length of in: the stage casing part of the bonding jumper of described radiant section: L2 is 7.5-8.5mm, and width is: W2 is 1.6-2mm；Under
End portion is a length of: L3 is 9.9-10.9mm, and width is: W3 is 0.8-1.2mm.
A kind of miniaturized dual-band monopole antenna based on metamaterial unit the most according to claim 1, its feature exists
In: length L1 of medium substrate is 28-32mm, and width W1 is 12-16mm, and the thickness of dielectric-slab is 0.6-1mm, material relative
Dielectric constant is between 4-5.
A kind of miniaturized dual-band monopole antenna based on metamaterial unit the most according to claim 1, its feature exists
In: the length of the aspect ratio medium substrate of described metal ground plate is little, and its length L7 is 9-13mm.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN104183912A CN104183912A (en) | 2014-12-03 |
| CN104183912B true CN104183912B (en) | 2016-08-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN106450777A (en) * | 2016-08-31 | 2017-02-22 | 重庆大学 | Circular polarization microstrip antenna |
| CN106229640A (en) * | 2016-08-31 | 2016-12-14 | 重庆大学 | double-layer wideband microstrip antenna |
| CN113258298B (en) * | 2021-06-01 | 2021-09-21 | 光谷技术有限公司 | Antenna structure and gateway equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6822610B2 (en) * | 2003-04-01 | 2004-11-23 | D-Link Corporation | Planar monopole antenna of dual frequency |
| WO2008121159A2 (en) * | 2006-10-19 | 2008-10-09 | Los Alamos National Security Llc | Active terahertz metamaterial devices |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |