CN205846242U - A kind of double C superposition shape three band Planer monopole antenna - Google Patents
A kind of double C superposition shape three band Planer monopole antenna Download PDFInfo
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- CN205846242U CN205846242U CN201620784242.9U CN201620784242U CN205846242U CN 205846242 U CN205846242 U CN 205846242U CN 201620784242 U CN201620784242 U CN 201620784242U CN 205846242 U CN205846242 U CN 205846242U
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Abstract
The utility model discloses a kind of double C superposition shape three band Planer monopole antenna, be made up of double C superposition shape radiating elements, ladder grading structure coplanar waveguide transmission line, rectangle floor and the external coaxial fitting being printed on medium substrate.Radiating element is made up of two C-shaped minor matters bands and two T-shaped minor matters bands, intermediate formation coupling gap, makes antenna produce multi-frequency Characteristic, by minor matters band flexural deformation and combination superposition, reduces the size of antenna further.Load a T-shaped minor matters band in the left and right sides at radiating element center respectively, improve the antenna impedance matching in low-frequency range, broadening impedance bandwidth.This antenna possess novel structure, easy to process, the feature such as be easily integrated, there is between frequency band very high isolation characteristic, the use requirement of each system is met at the aspect such as directivity and gain, working band covers 1.90～2.57GHz, 3.08～3.95GHz and 4.93～6.58GHz, meet UMTS, WLAN and WiMAX demand to working band, can be used for small multiple band wireless communication system.
Description
Technical field
This utility model relates to radio antenna technical field, is specifically related to a kind of double C superposition shape three band Planer list
Pole sub antenna, it is adaptable to UMTS, WLAN and WiMAX wireless communication system.
Background technology
Along with the fast development of wireless communication technology, Wireless Telecom Equipment develops to miniaturization, integration direction, Ke Yitong
Time compatibility multiple module, such as GPS, GSM, WLAN and WiMAX etc., different communication systems needs different frequency bands, by different receipts
Sending out antenna separately design and cannot meet the demand of mobile terminal miniaturization, accordingly, it would be desirable to design one has, volume is little, low to be cutd open
Face, the multiband planar antenna of feature such as it is easily integrated, meets the bandwidth requirements of different communication systems.Conventional multiband antenna
Including unipole antenna, slot antenna, microstrip antenna and inverse-F antenna, unipole antenna typically has omnidirectional radiation characteristic and wider
Bandwidth of operation, slot antenna is easier to realize multi-frequency Characteristic, and the overall dimensions of radiating element determines the lowest resonance frequency of antenna
Rate, microstrip antenna has the feature such as directed radiation, low section, and inverse-F antenna stock size is less and radiation direction is asymmetric, how quilt
It is applied on mobile phone terminal, but bandwidth of operation relative narrower.Resonance overlaps the important technology hands that technology is design multiband antenna
Section, it is to be merged by two or more resonant elements, and each resonant element can motivate certain resonant frequency.As
Patent No. CN203288744U, patent name is the utility model patent of " small-sized three frequency range monopole antennas ", radiating element
Being formed by annular, U-shaped and T-shaped are nested, different resonant elements can excite different resonant frequencies, can be used for bluetooth,
WLAN, WiMAX wireless communication system, but this antenna uses microstrip-fed, and floor and radiating element are in the both sides of medium substrate, no
Be beneficial to other antenna is integrated；Patent No. CN103762417A, patent name is the invention of " three frequency range monopole antennas "
Patent, radiating element is made up of thick minor matters semi arch structure and withe pitch circle ring structure, and thick minor matters semi arch structure forms low-resistance
Anti-transmission line, withe pitch circle ring structure forms high-impedance transmission line, produces multi-frequency Characteristic, antenna frequency band by the coupling of transmission line
Can be used for tri-communications bands of GSM, WLAN, WiMAX, but the overall dimensions of this antenna is bigger.Loading technique is by reactance component
Being placed in certain part of antenna, reactance component can be passive or active, the position of loading can at the input of antenna or
Inner antenna, uses loading technique can be able to be contracted by the flexural deformation of loading element with the impedance bandwidth of broadening multifrequency antenna
The size of miniature antenna.A kind of many minor matters three frequency printed monopole antenna, uses the metal minor matters band of two different lengths, makes antenna
There is multi-frequency Characteristic, minor matters load L-shaped resonance minor matters, and three minor matters are folded, increase each humorous
Shake the coupling between minor matters, improve impedance matching, working band cover 2.38～2.50GHz, 3.2～3.89GHz and 5.1～
7.81GHz, meets WLAN, WiMAX wireless communication system demand to frequency band.Radiating element and floor are in the meeting of medium substrate both sides
Causing antenna section relatively big, be unfavorable for the miniaturization of communication terminal, Integration Design, therefore, radiating element is coplanar with floor
Antenna is the focus of research at present.
Utility model content
The purpose of this utility model is to provide a kind of double C superposition shape three band Planer monopole antenna, has three frequency bands special
Property and good radiation characteristic, meet 2.0GHzUMTS, 2.4/5GHzWLAN and 3.5GHzWiMAX simultaneously and want working band
Ask.
The technical solution of the utility model is: a kind of double C superposition shape three band Planer monopole antennas, by being printed on medium
Double C superposition shape radiating element (1) on substrate, ladder grading structure coplanar waveguide transmission line (2), rectangle floor (3) and external
Coaxial fitting (4) constitute, described double C superposition shape radiating element (1) are by two C-shaped minor matters bands and two T-shaped minor matters bars
Band forms, and two C-shaped minor matters band Symmetric Fusion superpositions form the main body of radiating element, and intermediate formation coupling gap, in radiation
The left and right sides of unit center loads a T-shaped minor matters band respectively, is symmetrical in the axis of antenna, described ladder graded junction
Structure coplanar waveguide transmission line (2) is formed ladder grading structure by three rectangle combinations, it is characterised in that: the radiation of double C superposition shapes is single
Unit (1), ladder grading structure coplanar waveguide transmission line (2), rectangle floor (3) are positioned at medium substrate homonymy, and antenna is the most left
Right symmetrical structure, is fed by ladder grading structure coplanar waveguide transmission line (2), and transmission line is positioned at the middle and lower part of antenna,
Upper end is docked with radiating element bottom centre, and lower end is concordant with rectangle floor (3) lower limb, and rectangle floor (3) are symmetrically distributed in
The left and right sides of antenna, corner cut couples gap, coaxially with being formed between ladder grading structure coplanar waveguide transmission line (2) after processing
Joint (4) is connected with the lower limb of ladder grading structure coplanar waveguide transmission line (2) and rectangle floor (3).
Effect of the present utility model is: this antenna radiation unit uses the combination superposition of multiple minor matters bands, inspires three
Individual different working band, makes antenna produce multi-frequency Characteristic, and the size adjusting minor matters band can regulate the resonant frequency of correspondence,
By minor matters band flexural deformation and combination superposition, reduce the size of antenna further.The radiating element left and right sides increases T-shaped branch
Joint band can provide additional electric capacity and inductance, improves the antenna impedance matching in low-frequency range, broadening impedance bandwidth.Use rank
Ladder grading structure coplanar waveguide transmission line can regulate input impedance, reduces radiation loss.This antenna possesses novel structure, processing
The feature such as facilitate, be easily integrated, there is between frequency band very high isolation characteristic, meet each system at the aspect such as directivity and gain
Using requirement, working band covers 1.90～2.57GHz, 3.08～3.95GHz and 4.93～6.58GHz, and relative bandwidth is respectively
It is 29.9%, 24.8% and 28.7%, meets 2.0GHzUMTS, 2.4/5GHzWLAN and 3.5GHzWiMAX to working band
Requirement, it is adaptable to small multiple band wireless communication terminal.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model example.
Fig. 2 this utility model example actual measurement return loss S11Curve compares with simulation result.
Fig. 3 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 2.0GHz.
Fig. 4 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 2.0GHz.
Fig. 5 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 2.45GHz.
Fig. 6 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 2.45GHz.
Fig. 7 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 3.5GHz.
Fig. 8 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 3.5GHz.
Fig. 9 is that this utility model example is at the xoz surface radiation directional diagram that frequency is during 5.5GHz.
Figure 10 is that this utility model example is at the xoy surface radiation directional diagram that frequency is during 5.5GHz.
Figure 11 is the peak gain curve of this utility model example.
Detailed description of the invention
Detailed description of the invention of the present utility model is: as it is shown in figure 1, a kind of double C superposition shape three band Planer monopole sky
Line, by double C superposition shape radiating element (1) being printed on medium substrate, ladder grading structure coplanar waveguide transmission line (2), square
Shape floor (3) and external coaxial fitting (4) are constituted.Described double C superposition shape radiating element (1) are by two C-shaped minor matters bands
With two T-shaped minor matters band compositions, two C-shaped minor matters band Symmetric Fusion superpositions form the main body of radiating element, intermediate formation
Coupling gap, radiating element uses the combination superposition of multiple minor matters bands, inspires three different working bands, make antenna produce
Multi-frequency Characteristic, the size adjusting minor matters band can regulate the resonant frequency of correspondence, by folded to minor matters band flexural deformation and combination
Add the size reducing antenna further, load a T-shaped minor matters band in the left and right sides at radiating element center respectively, symmetrical
In the axis of antenna, the radiating element left and right sides increases T-shaped minor matters band can provide additional electric capacity and inductance, improves sky
Line is in the impedance matching of low-frequency range, broadening impedance bandwidth；Described ladder grading structure coplanar waveguide transmission line (2) is by three squares
Shape combination forms ladder grading structure, uses this structure can regulate input impedance, reduces radiation loss.It is characterized in that: double C
Superposition shape radiating element (1), ladder grading structure coplanar waveguide transmission line (2), rectangle floor (3) are positioned at medium substrate homonymy,
Antenna generally bilateral symmetry, is fed by ladder grading structure coplanar waveguide transmission line (2), and transmission line is positioned at sky
The middle and lower part of line, upper end docks with radiating element bottom centre, and lower end is concordant with rectangle floor (3) lower limb, rectangle floor (3)
It is symmetrically distributed in the left and right sides of antenna, after corner cut processes and between ladder grading structure coplanar waveguide transmission line (2), forms coupling
Joint close gap, coaxial fitting (4) is connected with the lower limb of ladder grading structure coplanar waveguide transmission line (2) and rectangle floor (3).
Select FR4 epoxy resin medium substrate, DIELECTRIC CONSTANT εr=4.4, thickness h=1.6mm.Medium substrate height l=
35mm, wide w=35mm, double C superposition shape radiating elements, ladder grading structure coplanar waveguide transmission line, rectangle floor are printed on Jie
On matter substrate same plane, antenna generally bilateral symmetry, make radiation pattern have symmetry.Radiating element two
Individual C-shaped minor matters band Symmetric Fusion superposition is formed, and loads a T-shaped minor matters bar respectively in the left and right sides at radiating element center
Band, makes radiating element that the minor matters band of different length is integrally formed, produces different resonant frequencies.Single C-shaped minor matters band
Length determines the position of resonant frequency in 2.4GHz frequency band.Two C-shaped minor matters bands select suitable positional symmetry to merge superposition
After, forming X-shaped minor matters band, the position of regulation superposition can adjust resonant frequency, the total length of X-shaped minor matters band and high band
Wavelength is close, determines antenna resonant frequency in 5.5GHz frequency band, and two C-shaped minor matters bands form open-end respectively, adjusts
That saves open-end is dimensioned such that impedance bandwidth extends to low-frequency range.The length of the T-shaped minor matters band increased determines 3.5GHz
The position of resonant frequency in frequency band, can produce additional electric capacity and inductance, the impedance bandwidth of further broadening antenna simultaneously.My god
Line is fed by ladder grading structure coplanar waveguide transmission line, and feeder line width is respectively w1、w4、w5, two pieces of rectangle floors are symmetrical in sky
The left and right sides of line, overall dimensions is l4×w2, change the structure on floor, rectangle floor symmetry excised two rectangles, improves sky
Line impedence matching properties, the gap width between coplanar waveguide transmission line and rectangle floor is g.Utilize electromagnetic simulation software
Ansoft HFSS carries out simulation optimization analysis, draws the physical dimension of antenna: w1=2.3mm, w2=15.0mm, w3=
12.4mm, w4=4.8mm, w5=7.1mm, w6=8.1mm, w7=3.4mm, w8=6.3mm, w9=6.8mm, w10=2.3mm,
w11=4.7mm, w12=3.6mm, w13=4.6mm, w14=2.2mm, w15=2.3mm, w16=2.8mm, l1=9.0mm, l2=
10.2mm, l3=7.9mm, l4=9.8mm, l5=11.5mm, l6=15.8mm, l7=3.9mm, l8=3.0mm, l9=6.2mm,
l10=4.1mm, l11=3.0mm, l12=5.7mm, l13=2.1mm, l14=6.5mm, l15=3.5mm, g=1.2mm, such as Fig. 1
Shown in.
Utilize vector network analyzer test days line model, survey antenna return loss S11Curve is imitated with Ansoft HFSS
True Comparative result as in figure 2 it is shown, as can be seen from the comparison result, substantially kiss on overall trend with simulation result by measured result
Close, simulation result has been carried out effective checking, from measured result it can be seen that antenna low-frequency range impedance bandwidth be 1.90～
2.57GHz, relative bandwidth reaches 29.9%, is completely covered UMTS's (1.92～2.17GHz) and WLAN (2.4～2.484GHz)
Bandwidth of operation, antenna Mid Frequency impedance bandwidth is 3.08～3.95GHz, and relative bandwidth reaches 28.7%, meet WiMAX (3.3～
Bandwidth demand 3.7GHz), antenna high band impedance bandwidth is 4.93～6.58GHz, and relative bandwidth reaches 28.7%, meets
The bandwidth demand of WLAN (5.15～5.825GHz), measured curve is slightly deepened, at high band the most to the right with simulation curve contrast
Skew, mainly mismachining tolerance and measurement environment causes.
The xoz face 2.0, at tetra-Frequency points of 2.45GHz, 3.5GHz, 5.5GHz and xoy surface radiation directional diagram to antenna
Testing, the radiation characteristic of inspection antenna, actual measurement and simulation result are as shown in Fig. 3,4,5,6,7,8,9,10.From figure permissible
Finding out, measured result is the most identical with simulation result, and antenna has preferable directivity at each Frequency point, approximates in xoz face
" 8 " word, circular at xoy surface radiation curve approximation, meet each frequency band demand to omnidirectional radiation.
Antenna peak gain curve of different frequency point in frequency band as shown in figure 11, chooses several adopting in frequency band range
Sampling point, test result shows, in 1.92～2.17GHz frequency band ranges, the excursion of peak antenna gain be 2.7～
3.2dBi, in 2.4～2.484GHz frequency band ranges, the excursion of peak gain is 2.3～2.9dBi, 3.3～
In 3.7GHz frequency band range, the excursion of peak gain is 2.8～3.4dBi, in 5.15～5.825GHz frequency band ranges,
The excursion of peak gain is 3.5～4.3dBi.Measured result shows that this antenna electric performance is good, meet UMTS, WLAN and
The band requirement of WiMAX system, can apply in small multiple band wireless communication system.
Claims (1)
1. double C superposition shape three band Planer monopole antennas, by the double C superposition shape radiating elements being printed on medium substrate
(1), ladder grading structure coplanar waveguide transmission line (2), rectangle floor (3) and external coaxial fitting (4) constitute, described is double
C superposition shape radiating element (1) is made up of two C-shaped minor matters bands and two T-shaped minor matters bands, and two C-shaped minor matters bands are symmetrical
Merge superposition and form the main body of radiating element, intermediate formation coupling gap, load respectively in the left and right sides at radiating element center
One T-shaped minor matters band, is symmetrical in the axis of antenna, and described ladder grading structure coplanar waveguide transmission line (2) is by three
Rectangle combination forms ladder grading structure, it is characterised in that: double C superposition shape radiating element (1), ladder grading structure co-planar waveguide
Transmission line (2), rectangle floor (3) are positioned at medium substrate homonymy, and antenna generally bilateral symmetry, by ladder grading structure
Coplanar waveguide transmission line (2) feeds, and transmission line is positioned at the middle and lower part of antenna, and upper end is docked with radiating element bottom centre,
Lower end is concordant with rectangle floor (3) lower limb, and rectangle floor (3) are symmetrically distributed in the left and right sides of antenna, corner cut process after with
Coupling gap, coaxial fitting (4) and the coplanar ripple of ladder grading structure is formed between ladder grading structure coplanar waveguide transmission line (2)
Lead transmission line (2) to be connected with the lower limb of rectangle floor (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620784242.9U CN205846242U (en) | 2016-07-17 | 2016-07-17 | A kind of double C superposition shape three band Planer monopole antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620784242.9U CN205846242U (en) | 2016-07-17 | 2016-07-17 | A kind of double C superposition shape three band Planer monopole antenna |
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| CN205846242U true CN205846242U (en) | 2016-12-28 |
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Cited By (5)
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| CN107039746A (en) * | 2017-04-10 | 2017-08-11 | 杨明 | One kind 11 frequency range antenna for mobile phone of miniaturization |
| CN108258409A (en) * | 2018-03-17 | 2018-07-06 | 吉林医药学院 | A kind of wing terminal octagon gap three-frequency plane slot antenna |
| CN108847525A (en) * | 2018-05-25 | 2018-11-20 | 哈尔滨工程大学 | A kind of compact multi-band antennas |
| CN111934089A (en) * | 2019-05-13 | 2020-11-13 | 华为技术有限公司 | Antenna device and mobile terminal |
| CN113113757A (en) * | 2021-04-13 | 2021-07-13 | 福耀玻璃工业集团股份有限公司 | Vehicle window and vehicle |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039746A (en) * | 2017-04-10 | 2017-08-11 | 杨明 | One kind 11 frequency range antenna for mobile phone of miniaturization |
| CN108258409A (en) * | 2018-03-17 | 2018-07-06 | 吉林医药学院 | A kind of wing terminal octagon gap three-frequency plane slot antenna |
| CN108258409B (en) * | 2018-03-17 | 2023-12-15 | 吉林医药学院 | Wing-shaped terminal octagonal slot three-frequency planar slot antenna |
| CN108847525A (en) * | 2018-05-25 | 2018-11-20 | 哈尔滨工程大学 | A kind of compact multi-band antennas |
| CN111934089A (en) * | 2019-05-13 | 2020-11-13 | 华为技术有限公司 | Antenna device and mobile terminal |
| US11923626B2 (en) | 2019-05-13 | 2024-03-05 | Huawei Technologies Co., Ltd. | Antenna apparatus and mobile terminal |
| CN113113757A (en) * | 2021-04-13 | 2021-07-13 | 福耀玻璃工业集团股份有限公司 | Vehicle window and vehicle |
| CN113113757B (en) * | 2021-04-13 | 2023-06-06 | 福耀玻璃工业集团股份有限公司 | Vehicle window and vehicle |
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Legal Events
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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: 20161228 Termination date: 20170717 |
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| CF01 | Termination of patent right due to non-payment of annual fee |