CN105552536A - Monopole dual-band WLAN/WiMAX antenna - Google Patents
Monopole dual-band WLAN/WiMAX antenna Download PDFInfo
- Publication number
- CN105552536A CN105552536A CN201610098965.8A CN201610098965A CN105552536A CN 105552536 A CN105552536 A CN 105552536A CN 201610098965 A CN201610098965 A CN 201610098965A CN 105552536 A CN105552536 A CN 105552536A
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- band
- antenna
- wlan
- wimax
- radiant section
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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 invention discloses a monopole dual-band WLAN/WiMAX antenna, which comprises a dielectric substrate, a microstrip structure and a metal floor, wherein the microstrip structure is located on the upper surface of the dielectric substrate; the metal floor is located on the lower surface of the dielectric substrate; the microstrip structure comprises a microstrip feeder, a first radiation section and a second radiation section; the first radiation section is connected with the microstrip feeder; and the second radiation section is connected with the first radiation section. The monopole dual-band WLAN/WiMAX antenna is compact in structure, can be designed into a small size and has good radiation characteristic. The antenna is resonated at different frequencies through different resonant elements, so that miniaturization and dual-band of the WLAN/WIMAX antenna are achieved; and the monopole dual-band WLAN/WiMAX antenna is suitable for WLAN2.45GHz and WIMAX3.5GHz.
Description
Technical field
The present invention relates to small-sized microstrip antenna field, particularly relate to a kind of monopole double frequency-band WLAN/WiMAX antenna.
Background technology
At present, along with the develop rapidly of Modern wireless communication technology, WLAN (wireless local area network) (WirelessLocalAreaNetworks, WLAN) and worldwide interoperability for microwave (WorldwideInteroperabilityMicrowaveAccess, WiMAX) are widely used.WLAN utilizes wireless communication technology to transmit data aloft, makes user can the exchange carrying out information at any time.WiMAX is then a kind of emerging wireless access wide band technology, and the high speed of Internet can be provided to connect, and data transmission distance can reach 50km farthest, can meet the demand of high velocity mobile users.Antenna is as the important component part of wireless communication system, and its performance quality will produce significant impact to communicativeness.Current WLAN groundwork frequency is at 2.4GHz(2.4-2.484GHz), 5.2GHz(5.15-5.35GHz), 5.8GHz(5.725-5.825GHz).And for WIMAX, the frequency partition standard that current various countries are ununified, current frequency partition mainly concentrates on 2.5GHz(2.5-2.69GHz), 3.5GHz(3.4-3.7GHz), 5.5GHz(5.25-5.85GHz) etc. frequency range.Along with WLAN and WiMAX technology obtains general application at wireless communication field, the Miniaturized multiband microstrip antenna being directed to WLAN/WiMAX becomes one of field of antenna study hotspot.
Along with the fast development of integrated circuit, system equipment to multifunctional all, miniaturization, modularization, intelligentized direction development.As the final element of wireless communication system, modern electronic product proposes higher performance requirement to antenna: broadband, multiband, small-sized, be easy to manufacture etc., this requirement also promotes a day alignment miniaturization, multiband future development.Due to the extensive use of radio communication, make frequency spectrum resource become more and more nervous, therefore the WLAN/WiMAX antenna of small design, low cost, double frequency or multifrequency is significant.And when designing multiband aerial, microstrip antenna is because structure is simple, make easily, cost is low, easily and the advantage such as microwave circuit is integrated, be widely used.Realize microstrip antenna multifrequency at present, miniaturized work mainly contains following methods: (1) adopts multiple-layer overlapped mount technology, and the mode utilizing two pasters stacked forms two resonators and correspond to different resonance frequencys and carry out dual frequency radiation, but structure is more complicated; (2) slot on aerial radiation paster, but original current path can be changed, affect the radiation characteristic of antenna; (3) two narrow band resonances mesh mergings are become a dual-band antenna unit, but therefore can increase the size of antenna.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of monopole double frequency-band WLAN/WiMAX antenna, be intended to solve the problems such as existing antenna structure is complicated, size is comparatively large, performance is affected.
Technical scheme of the present invention is as follows:
A kind of monopole double frequency-band WLAN/WiMAX antenna, the metal floor wherein, comprising medium substrate, be positioned at the microstrip structure of medium substrate upper surface, be positioned at medium substrate lower surface; Described microstrip structure comprises a microstrip feed line, the first radiant section be connected with described microstrip feed line, the second radiant section of being connected with described first radiant section.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, described first radiant section is straight-flanked ring structure.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, described second radiant section is L-type structure.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, the first radiation metal band that described microstrip feed line also bends with is connected.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, is also provided with the second radiation metal band being connected to microstrip feed line between described microstrip feed line and the first radiation metal band.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, described second radiation metal band is bending structure.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, described second radiant section is in the first radiant section.
Described monopole double frequency-band WLAN/WiMAX antenna, wherein, described medium substrate is FR4 substrate.
Beneficial effect: monopole double frequency-band WLAN/WiMAX antenna of the present invention, its compact conformation, can be designed to small size, has good radiation characteristic.This antenna is by different resonant elements, and resonance is in different frequencies respectively, achieves miniaturization and the two-band of WLAN/WIMAX antenna, is applicable to WLAN2.45GHz and WIMAX3.5GHz.
Accompanying drawing explanation
Fig. 1 is the structural representation at a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna first visual angle.
Fig. 2 is the structural representation at a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna second visual angle.
Fig. 3 is the return loss plot figure of a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna.
Fig. 4 is the E face of a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna at 2.45GHz and the directional diagram in H face.
Fig. 5 be a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna at the E face of 3.5GHz and the directional diagram in H face.
Embodiment
The invention provides a kind of monopole double frequency-band WLAN/WiMAX antenna, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1 and Tu, Fig. 1 and Fig. 2 is the structural representation of a kind of monopole double frequency-band of the present invention WLAN/WiMAX antenna preferred embodiment different visual angles, as shown in the figure, it metal floor (grounded part) comprising medium substrate 1, be positioned at the microstrip structure of medium substrate 1 upper surface, be positioned at medium substrate 1 lower surface; Described microstrip structure comprises a microstrip feed line 2, the first radiant section 3 be connected with described microstrip feed line 2, the second radiant section 4 of being connected with described first radiant section 3.Monopole double frequency-band WLAN/WiMAX antenna of the present invention, its compact conformation, can be designed to small size, has good radiation characteristic.This antenna is by different resonant elements, and resonance is at different frequencies, i.e. WLAN2.45GHz and WIMAX3.5GHz respectively.The resonance frequency of antenna can be changed by the size changing resonant element.Achieve miniaturization and the two-band of WLAN/WIMAX antenna, be applicable to WLAN2.45GHz and WIMAX3.5GHz.
Specifically as shown in Figure 1, described first radiant section 3 is straight-flanked ring structure.The radiation of 2.45GHZ is realized by described straight-flanked ring structure.
Described second radiant section 4 is L-type structure.Second radiant section 4 of L-type structure can reduce antenna size, and increases resonant path.First radiant section 3 is connected by the 3rd radiation metal band 5 with between the second radiant section, and described 3rd radiation metal band 5 one end is connected to the middle part on the long limit of L-type structure, and the other end is connected to the middle part of straight-flanked ring structure top margin.
The first radiation metal band 6 that described microstrip feed line 2 also bends with one is connected.The structure of its formation of the first described radiation metal band 6 reverse-hook shape, and each section is linear structure.
The the second radiation metal band 7 being connected to microstrip feed line 2 is also provided with between described microstrip feed line 2 and the first radiation metal band 6.The introducing of the first radiation metal band 6 and the second radiation metal band 7 makes 3.5GHz impedance matching, adds bandwidth.The impedance matching of 3.5GHz can be realized by the size changing the first radiation metal band 6 and the second radiation metal band 7.Specifically can apply Frequency Simulation Software HFSS and simulation calculation and optimal design are carried out to antenna, to obtain optimum size and tuning relation.
Described second radiation metal band 7 is also preferably bending structure.The radiation realizing 3.5GHz is brought by the second radiant section 4 of L-type structure and the metal of bending.
Described second radiant section 4 is preferably in the first radiant section 3, namely the second described radiant section 4 is in the straight-flanked ring structure of the first radiant section 3, such a structure increases the resonant path of antenna, and then reduce the size of antenna, add the effective bandwidth of antenna simultaneously.
Described medium substrate 1 is FR4 substrate (i.e. epoxy plate).The relative dielectric constant of FR4 is 4.4, and dielectric loss is 0.02.
Like this, double frequency-band WLAN/WIMAX antenna of the present invention is 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 straight-flanked ring structure, the radiation of 3.5GHz is realized by the second radiant section 4 of L-type structure be connected with the first radiant section 3 and the first radiation metal band 6 be connected with microstrip feed line 2, the present invention is applicable to WLAN2.45GHz and WiMAX3.5GHz, structure is simple, is easy to make, and cost is low.
As an example, as depicted in figs. 1 and 2, each parameter of the antenna in embodiment is of a size of:
The length of medium substrate 1 and wide L=16cm, W=28mm respectively, thickness is 1.6mm; The metal floor 8 of the lower surface of medium substrate 1 is of a size of p1=1mm, L=16mm; The length K=14mm of microstrip feed line 2, width w1=1.5mm; Each parameter of the first radiant section 3 is respectively length L1=14mm, width L2=14mm, the wide w2=1mm of underclearance, side relief width w3=1mm; The size of the second radiant section 4 is width n2=5mm respectively, long limit relief width w5=1mm; The 3rd radiation metal band 5 that first radiant section 3 is connected with the second radiant section 4 is of a size of length n1=1mm, width w4=0.5mm; The the second radiation metal band 7 be connected with microstrip feed line 2 is of a size of length m4=4mm, width w7=0.5mm; The the first radiation metal band 6 be connected with microstrip feed line 2 is of a size of 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 adopts HFSS software to test, and the return loss plot of gained as shown in Figure 3.As seen from the figure, the working frequency range of below-10dB is 2.35GHz ~ 2.49GHz and 3.36GHz ~ 3.66GHz, so bandwidth meets job requirement, reaches good impedance matching effect.Fig. 4 is the E face of monopole double frequency-band WLAN/WiMAX antenna when 2.45GHz and H face directional diagram, as seen from the figure, when frequency 2.45GHz, gain is 1.66dBi, Fig. 5 is the E face of monopole double frequency-band WLAN/WiMAX antenna when 3.5GHz and H face directional diagram, as seen from the figure, when frequency is 3.5GHz, gain is 1.55dBi, so the present invention has good omni-directional.The return loss of antenna of the present invention meets bandwidth requirement, and the directional diagram E Noodles figure of eight directional diagram of antenna, H face is omni-directional pattern, and gain meets the requirement of antenna.Feeding classification is feed microstrip line.
Compared with the prior art, technical characterstic of the present invention and effect as follows:
The present invention achieves the radiation of 2.45GHz and 3.5GHz by introducing second radiant section in L-type and the metal tape that arranges bending on microstrip feed line in the first radiant section of a straight-flanked ring structure, such a structure increases the resonant path of antenna, and then reduce the size of antenna, add the effective bandwidth of antenna simultaneously.
In the present invention, antenna is of compact construction (28mm*16mm*1.6mm), can be integrated into easily in WLAN and WiMAX equipment.
The metal tape of bending adds the bandwidth of antenna, and achieve the design of multifrequency, have good matching properties, the directional diagram of antenna is relatively stable in all working frequency range.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (8)
1. a monopole double frequency-band WLAN/WiMAX antenna, is characterized in that, the metal floor comprising medium substrate, be positioned at the microstrip structure of medium substrate upper surface, be positioned at medium substrate lower surface; Described microstrip structure comprises a microstrip feed line, the first radiant section be connected with described microstrip feed line, the second radiant section of being connected with described first radiant section.
2. monopole double frequency-band WLAN/WiMAX antenna according to claim 1, it is characterized in that, described first radiant section is straight-flanked ring structure.
3. monopole double frequency-band WLAN/WiMAX antenna according to claim 1, it is characterized in that, described second radiant section is L-type structure.
4. monopole double frequency-band WLAN/WiMAX antenna according to claim 1, is characterized in that, the first radiation metal band that described microstrip feed line also bends with is connected.
5. monopole double frequency-band WLAN/WiMAX antenna according to claim 4, is characterized in that, is also provided with the second radiation metal band being connected to microstrip feed line between described microstrip feed line and the first radiation metal band.
6. monopole double frequency-band WLAN/WiMAX antenna according to claim 5, is characterized in that, described second radiation metal band is bending structure.
7. monopole double frequency-band WLAN/WiMAX antenna according to claim 2, it is characterized in that, described second radiant section is in the first radiant section.
8. monopole double frequency-band WLAN/WiMAX antenna according to claim 1, it is characterized in that, described medium substrate is FR4 substrate.
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 |
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| CN201610098965.8A CN105552536B (en) | 2016-02-23 | 2016-02-23 | A kind of monopole double frequency-band WLAN/WiMAX antennas |
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| CN105552536A true CN105552536A (en) | 2016-05-04 |
| CN105552536B CN105552536B (en) | 2018-05-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681257A (en) * | 2017-11-10 | 2018-02-09 | 哈尔滨工程大学 | One kind miniaturization multiple-resonant antenna |
| CN107968256A (en) * | 2017-11-20 | 2018-04-27 | 哈尔滨工程大学 | A kind of small-size multifunction 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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| 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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| CN202772260U (en) * | 2012-09-27 | 2013-03-06 | 天津职业技术师范大学 | Novel tri-band printed antenna |
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| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681257A (en) * | 2017-11-10 | 2018-02-09 | 哈尔滨工程大学 | One kind miniaturization multiple-resonant antenna |
| CN107681257B (en) * | 2017-11-10 | 2021-04-06 | 哈尔滨工程大学 | Miniaturized three-resonance antenna |
| CN107968256A (en) * | 2017-11-20 | 2018-04-27 | 哈尔滨工程大学 | A kind of small-size multifunction 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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| CN105552536B (en) | 2018-05-29 |
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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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