CN105552536B - A kind of monopole double frequency-band WLAN/WiMAX antennas - Google Patents
A kind of monopole double frequency-band WLAN/WiMAX antennas Download PDFInfo
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- CN105552536B CN105552536B CN201610098965.8A CN201610098965A CN105552536B CN 105552536 B CN105552536 B CN 105552536B CN 201610098965 A CN201610098965 A CN 201610098965A CN 105552536 B CN105552536 B CN 105552536B
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- Prior art keywords
- radiant section
- double frequency
- band
- wlan
- wimax
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
Abstract
The present invention discloses a kind of monopole double frequency-band WLAN/WiMAX antennas, the microstrip structure including medium substrate, positioned at medium substrate upper surface, the metal floor positioned at medium substrate lower surface；The microstrip structure includes a microstrip feed line, the first radiant section being connected with the microstrip feed line, the second radiant section being connected with first radiant section.The monopole double frequency-band WLAN/WiMAX antennas of the present invention, it is compact-sized, small size is may be designed to, there is good radiation characteristic.The antenna is by different resonant elements, and resonance realizes miniaturization and the two-band of WLAN/WIMAX antennas, suitable for WLAN2.45GHz and WIMAX3.5GHz in different frequencies respectively.
Description
Technical field
The present invention relates to small-sized microstrip antenna field more particularly to a kind of monopole double frequency-band WLAN/WiMAX antennas.
Background technology
At present, with the rapid development of Modern wireless communication technology, WLAN（Wireless Local Area
Networks, WLAN）And worldwide interoperability for microwave（Worldwide Interoperability Microwave Access,
WiMAX）It is widely used.WLAN transmits data in the air using wireless communication technique, allows the progress of user at any time
The exchange of information.WiMAX is then a kind of emerging wireless access wide band technology, is capable of providing the high speed connection of Internet,
Data transmission distance farthest up to 50km, disclosure satisfy that the demand of high velocity mobile users.Weight of the antenna as wireless communication system
Component is wanted, performance quality will generate significant impact to communicativeness.The frequency of WLAN groundworks at present is in 2.4 GHz
（2.4-2.484 GHz）, 5.2 GHz（5.15-5.35 GHz）、5.8 GHz （5.725-5.825 GHz）.And for
WIMAX, at present various countries there is no unified frequency partition standard, frequency partition is concentrated mainly on 2.5 GHz at present（2.5-2.69
GHz）、3.5 GHz （3.4-3.7 GHz）、5.5 GHz （5.25-5.85 GHz）Etc. frequency ranges.With WLAN and WiMAX technologies
Universal application is obtained in wireless communication field, the Miniaturized multiband microstrip antenna of WLAN/WiMAX is directed to and is led as antenna
One of domain research hotspot.
With the fast development of integrated circuit, system equipment is miniaturization, modularization, intelligentized to multifunctional all
Direction continues to develop.As the final element of wireless communication system, modern electronic product proposes antenna higher performance will
It asks：Broadband, multiband, small-sized, easily fabricated etc., this requirement also promote antenna and develop to miniaturization, multiband direction.By
In the extensive use of wireless communication so that frequency spectrum resource becomes more and more nervous, therefore small design, low cost, double frequency or
The WLAN/WiMAX antennas of multifrequency are of great significance.And when designing multiband aerial, microstrip antenna is because simple in structure, system
Make easy, at low cost, the advantages that easily being integrated with microwave circuit, be widely used.Microstrip antenna multifrequency is realized at present, it is small-sized
The work of change mainly has following methods：（1）Using multiple-layer overlapped mount technology, two are formed using the mode that two patches are stacked
A resonator corresponds to different resonant frequencies and carries out dual frequency radiation, but structure is more complicated；（2）It is opened on aerial radiation patch
Slot, but original current path can be changed, influence the radiation characteristic of antenna；（3）Two narrow band resonances units are merged into one
Dual-band antenna unit, but therefore can increase the size of antenna.
Therefore, the prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned deficiencies of the prior art, it is an object of the invention to provide a kind of monopole double frequency-band WLAN/WiMAX
Antenna, it is intended to solve the problems such as existing antenna structure is complicated, size is larger, performance is affected.
Technical scheme is as follows：
A kind of monopole double frequency-band WLAN/WiMAX antennas, wherein, including medium substrate, positioned at medium substrate upper surface
Microstrip structure, the metal floor positioned at medium substrate lower surface；The microstrip structure includes a microstrip feed line and the micro-strip
First radiant section of feeder line connection, the second radiant section being connected with first radiant section.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, first radiant section is rectangle ring structure.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, second radiant section is L-type structure.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, the microstrip feed line also with one bending first
Radiate metal band connection.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, the microstrip feed line and first radiation metal tape it
Between be additionally provided be connected to microstrip feed line second radiation metal tape.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, the second radiation metal tape is bending structure.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, second radiant section is in the first radiant section.
The monopole double frequency-band WLAN/WiMAX antennas, wherein, the medium substrate is FR4 substrates.
Advantageous effect：The monopole double frequency-band WLAN/WiMAX antennas of the present invention, it is compact-sized, it may be designed to small ruler
It is very little, there is good radiation characteristic.The antenna is by different resonant elements, and resonance realizes WLAN/ in different frequencies respectively
The miniaturization of WIMAX antennas and two-band, suitable for WLAN2.45GHz and WIMAX3.5GHz.
Description of the drawings
Fig. 1 is a kind of structure diagram at the first visual angle of monopole double frequency-band WLAN/WiMAX antennas of the present invention.
Fig. 2 is a kind of structure diagram at the second visual angle of monopole double frequency-band WLAN/WiMAX antennas of the present invention.
Fig. 3 is a kind of return loss plot figure of monopole double frequency-band WLAN/WiMAX antennas of the present invention.
Fig. 4 is a kind of directional diagram of the monopole double frequency-band WLAN/WiMAX antennas of the present invention in the E faces of 2.45GHz and H faces.
Fig. 5 is a kind of monopole double frequency-band WLAN/WiMAX antennas of the present invention in the E faces of 3.5GHz and the direction in H faces
Figure.
Specific embodiment
The present invention provides a kind of monopole double frequency-band WLAN/WiMAX antennas, for make the purpose of the present invention, technical solution and
Effect is clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that specific embodiment described herein
It is only used to explain the present invention, be not intended to limit the present invention.
It please refers to Fig.1 and schemes, Fig. 1 and Fig. 2 are preferably implemented for a kind of monopole double frequency-band WLAN/WiMAX antennas of the present invention
The structure diagram of example different visual angles, as shown in the figure, it includes medium substrate 1, the micro-strip knot positioned at 1 upper surface of medium substrate
Structure, the metal floor positioned at 1 lower surface of medium substrate（Grounded part）；The microstrip structure includes a microstrip feed line 2 and institute
The first radiant section 3 for stating the connection of microstrip feed line 2, the second radiant section 4 being connected with first radiant section 3.The monopole of the present invention
Sub- double frequency-band WLAN/WiMAX antennas, it is compact-sized, small size is may be designed to, there is good radiation characteristic.The antenna passes through
Different resonant elements, resonance is in different frequencies, i.e. WLAN 2.45GHz and WIMAX 3.5GHz respectively.It is humorous by changing
The size of unit of shaking can change the resonant frequency of antenna.Miniaturization and the two-band of WLAN/WIMAX antennas are realized, is applicable in
In WLAN2.45GHz and WIMAX3.5GHz.
Specifically as shown in Figure 1, first radiant section 3 is rectangle ring structure.It is realized by the rectangle ring structure
2.45GHZ radiation.
Second radiant section 4 is L-type structure.Second radiant section 4 of L-type structure can reduce antenna size, and increase humorous
Shake path.It is connected between first radiant section 3 and the second radiant section by the 3rd radiation metal tape 5, the 3rd radiation metal tape 5
One end is connected to the middle part of L-type structure long side, and the other end is connected to the middle part of rectangle ring structure top margin.
First radiation metal tape 6 of the microstrip feed line 2 also with a bending is connected.The first radiation metal tape 6
It forms the structure of a reverse-hook shape, and each section is linear structure.
The microstrip feed line 2 and first is additionally provided with the second radiation gold for being connected to microstrip feed line 2 between radiating metal tape 6
Belong to band 7.The introducing that first radiation metal tape 6 and second radiates metal tape 7 makes 3.5GHz impedance matchings, adds bandwidth.Pass through
The impedance matching of 3.5GHz can be realized by changing the size of the first radiation radiation metal tape 7 of metal tape 6 and second.It can specifically apply
Frequency Simulation Software HFSS carries out simulation calculation and optimization design to antenna, to obtain optimum size and tuning relation.
The second radiation metal tape 7 is preferably also bending structure.The second radiant section 4 and bending by L-type structure
Metal tape realizes the radiation of 3.5GHz.
Second radiant section 4 is preferably in the first radiant section 3, i.e., second radiant section 4 is in the first radiation
In the rectangle ring structure of section 3, such a structure increases the resonant path of antenna, and then the size of antenna is reduced, increased simultaneously
The effective bandwidth of antenna.
The medium substrate 1 is FR4 substrates（That is epoxy plate）.The relative dielectric constant of FR4 is 4.4, and dielectric loss is
0.02。
In this way, double frequency-band WLAN/WIMAX antennas of the present invention are a kind of monopole antenna based on microband paste,
The radiation of 2.45GHz is realized by the first radiant section 3 of a microstrip feed line 2 and rectangle ring structure, by being radiated with first
Second radiant section 4 of the L-type structures of 3 connection of section and the first radiation metal tape 6 being connected with microstrip feed line 2 realize 3.5GHz
Radiation, the present invention be suitable for WLAN2.45GHz and WiMAX3.5GHz, it is simple in structure, be easy to make, it is at low cost.
As an example, as depicted in figs. 1 and 2, the size of each parameter of antenna in embodiment is：
The length of medium substrate 1 and wide L=16cm, W=28mm, thickness 1.6mm respectively；The lower surface of medium substrate 1
The size of metal floor 8 is p1=1mm, L=16mm；Length K=14mm of microstrip feed line 2, width w1=1.5mm；First radiant section 3
Each parameter be respectively length L1=14mm, width L2=14mm, the wide w2=1mm of underclearance, side relief width w3=1mm；Second
The size of radiant section 4 is width n2=5mm, long side relief width w5=1mm respectively；First radiant section 3 is connected with the second radiant section 4
The 3rd radiation metal tape 5 size be length n1=1mm, width w4=0.5mm；The second radiation being connected with microstrip feed line 2
The size of metal tape 7 is length m4=4mm, width w7=0.5mm；The ruler for the first radiation metal tape 6 being connected with microstrip feed line 2
It is very little for long edge lengths m1=5mm, width m2=5mm, bond length m3=4mm, middle part relief width w6=1mm.
In the present invention, Dual-band monopole antenna WLAN/WiMAX property indices are tested using HFSS softwares, institute
The return loss plot obtained is as shown in Figure 3.As seen from the figure, the working frequency range of below -10dB for 2.35GHz~2.49GHz and
3.36GHz~3.66GHz so bandwidth meets job requirement, has reached good impedance matching effect.Fig. 4 is double for monopole
E-plane and H-plane pattern of the frequency band WLAN/WiMAX antennas in 2.45GHz, as seen from the figure, in frequency 2.45GHz, gain
For 1.66dBi, Fig. 5 is E-plane and H-plane pattern of the monopole double frequency-band WLAN/WiMAX antennas in 3.5GHz, can by figure
See, when frequency is 3.5GHz, gain 1.55dBi, so the present invention has good omni-directional.The antenna of the present invention returns
Ripple loss meets bandwidth requirement, the directional diagram E noodles figure of eight directional diagrams of antenna, and H faces are omni-directional pattern, and gain meets day
The requirement of line.Feeding classification is feed microstrip line.
Compared with the prior art, technical characterstic of the invention and effect are as follows：
The present invention by the first radiant section of a rectangle ring structure introduce a second L-shaped radiant section and
The metal tape of bending is set to realize the radiation of 2.45GHz and 3.5GHz on microstrip feed line, such a structure increases the humorous of antenna
Shake path, and then reduces the size of antenna, while adds the effective bandwidth of antenna.
Antenna has compact structure in the present invention（28mm*16mm*1.6mm）, can easily be integrated into WLAN and
In WiMAX equipment.
The metal tape of bending adds the bandwidth of antenna, realizes the design of multifrequency, has good matching properties, antenna
Directional diagram in all working frequency range relatively stablize.
It should be appreciated that the application of the present invention is not limited to the above, it for those of ordinary skills, can
To be improved or converted according to the above description, all these modifications and variations should all belong to the guarantor of appended claims of the present invention
Protect scope.
Claims (6)
1. a kind of monopole double frequency-band WLAN/WiMAX antennas, which is characterized in that including medium substrate, positioned at medium substrate upper table
The microstrip structure in face, the metal floor positioned at medium substrate lower surface；The microstrip structure include a microstrip feed line, with it is described
First radiant section of microstrip feed line connection, the second radiant section being connected with first radiant section;
First radiation metal band connection of the microstrip feed line also with a bending, the first radiation metal tape is an overhead kick type
Structure；
The the second radiation metal tape for being connected to microstrip feed line is additionally provided between the microstrip feed line and the first radiation metal tape.
2. monopole double frequency-band WLAN/WiMAX antennas according to claim 1, which is characterized in that first radiant section
For rectangle ring structure.
3. monopole double frequency-band WLAN/WiMAX antennas according to claim 1, which is characterized in that second radiant section
For L-type structure.
4. monopole double frequency-band WLAN/WiMAX antennas according to claim 1, which is characterized in that the second radiation gold
It is bending structure to belong to band.
5. monopole double frequency-band WLAN/WiMAX antennas according to claim 2, which is characterized in that second radiant section
In the first radiant section.
6. monopole double frequency-band WLAN/WiMAX antennas according to claim 1, which is characterized in that the medium substrate is
FR4 substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098965.8A CN105552536B (en) | 2016-02-23 | 2016-02-23 | A kind of monopole double frequency-band WLAN/WiMAX antennas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098965.8A CN105552536B (en) | 2016-02-23 | 2016-02-23 | A kind of monopole double frequency-band WLAN/WiMAX antennas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105552536A CN105552536A (en) | 2016-05-04 |
| CN105552536B true CN105552536B (en) | 2018-05-29 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681257B (en) * | 2017-11-10 | 2021-04-06 | 哈尔滨工程大学 | Miniaturized three-resonance antenna |
| CN107968256B (en) * | 2017-11-20 | 2020-10-27 | 哈尔滨工程大学 | Small-size multifunctional antenna |
| CN108321518A (en) * | 2018-01-22 | 2018-07-24 | 哈尔滨工程大学 | A kind of multiband antenna based on coupling load |
| TWI713253B (en) * | 2019-11-22 | 2020-12-11 | 啓碁科技股份有限公司 | Antenna structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202772260U (en) * | 2012-09-27 | 2013-03-06 | 天津职业技术师范大学 | Novel tri-band printed antenna |
| CN104009285A (en) * | 2014-05-29 | 2014-08-27 | 华南理工大学 | Miniaturized multi-band WLAN/WiMAX antenna |
| CN104201466A (en) * | 2014-09-01 | 2014-12-10 | 西安电子科技大学 | Frequency reconfigurable filtering antenna with end-on-fire characteristics |
| CN104868232A (en) * | 2015-05-25 | 2015-08-26 | 华南理工大学 | Printing type multiband WLAN/WiMAX antenna with compact structure |
| CN204885431U (en) * | 2015-09-14 | 2015-12-16 | 天津职业技术师范大学 | A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN |
-
2016
- 2016-02-23 CN CN201610098965.8A patent/CN105552536B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202772260U (en) * | 2012-09-27 | 2013-03-06 | 天津职业技术师范大学 | Novel tri-band printed antenna |
| CN104009285A (en) * | 2014-05-29 | 2014-08-27 | 华南理工大学 | Miniaturized multi-band WLAN/WiMAX antenna |
| CN104201466A (en) * | 2014-09-01 | 2014-12-10 | 西安电子科技大学 | Frequency reconfigurable filtering antenna with end-on-fire characteristics |
| CN104868232A (en) * | 2015-05-25 | 2015-08-26 | 华南理工大学 | Printing type multiband WLAN/WiMAX antenna with compact structure |
| CN204885431U (en) * | 2015-09-14 | 2015-12-16 | 天津职业技术师范大学 | A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN |
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| CN105552536A (en) | 2016-05-04 |
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Inventor after: He Yejun Inventor after: Chen Minghai Inventor after: Chen Man Inventor before: He Yejun Inventor before: Yin Jiajia Inventor before: He Chunlong |
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