CN104009285A - Miniaturized multi-band WLAN/WiMAX antenna - Google Patents
Miniaturized multi-band WLAN/WiMAX antenna Download PDFInfo
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- CN104009285A CN104009285A CN201410233980.XA CN201410233980A CN104009285A CN 104009285 A CN104009285 A CN 104009285A CN 201410233980 A CN201410233980 A CN 201410233980A CN 104009285 A CN104009285 A CN 104009285A
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Abstract
The invention discloses a miniaturized multi-band WLAN/WiMAX antenna. The miniaturized multi-band WLAN/WiMAX antenna comprises an S-shaped micro-strip structure, an annular structure with a notch, and a defect floor structure with a rectangular gap, wherein the S-shaped micro-strip structure is connected with the annular structure with the notch through an L-shaped micro-strip patch. According to the antenna, an FR4 substrate is adopted, the dielectric constant is 4.4, the dielectric loss is 0.02, 3.5 GHz radiation is achieved through the S-shaped micro-strip structure, 2.4 GHz radiation is achieved through the annular structure with the notch, 5 GHz radiation is achieved through the rectangular gap in the floor, return loss of the antenna meets the bandwidth requirement, a directional diagram is similar to a monopole antenna, the E surface is a directional diagram shaped like the Arabic numeral 8, the H surface is an omni-directional diagram, and gain meets the requirement of the antenna. The miniaturized multi-band WLAN/WiMAX antenna achieves miniaturization and multiple bands and is suitable for WLAN 2.4/5.2/5.8 GHz and WiMAX 3.5/5.5 GHz.
Description
Technical field
The present invention relates to small-sized microstrip antenna research field, particularly a kind of miniaturized multifrequency band WLAN/WiMAX antenna.
Background technology
Along with developing rapidly of Modern wireless communication technology, WLAN (wireless local area network) (Wireless Local Area Networks, WLAN) and worldwide interoperability for microwave access (Worldwide Interoperability for Microwave Access, WiMAX) become the important research direction of radio communication.WLAN utilizes wireless communication technology to transmit data, speech and vision signal aloft, make user's exchange message whenever and wherever possible, be that an emerging broadband wireless connects people's technology, can provide the high speed of Internet to connect, data transmission distance can reach 50km farthest.Antenna is as the important component part of wireless communication system, and its performance quality will produce great impact to whole communication system.Current WLAN operates mainly in 2.45GHz (2.4-2.484GHz), 5.2GHz (5.15-5.35GHz) and 5.8GHz (5.725-5.825GHz), and WiMAX is operated in 2.5GHz (2.5-2.69GHz), 3.5GHz (3.4-3.69GHz) and 5.5GHz (5.25-5.85GHz).
Along with the fast development of high speed integrated circuit, system equipment constantly strides forward to multifunctional all, small integrated, modularization, intelligentized direction.Terminal equipment as radio system, modern electronic equipment proposes higher performance requirement to antenna: broadband, miniaturization, volume be little, lightweight, be easy to manufacture, cost is low, it is integrated etc. to be easy to, and this demand has promoted the development of antenna miniaturization, complanation.The extensive use of radio communication, makes frequency spectrum resource become more and more nervous, so small design, volume are little, lightweight, and the WLAN/WiMAX antenna of double frequency or multifrequency is significant.Microstrip antenna due to low section, low cost, be easy to the advantages such as making and obtained studying widely and applying.Realize at present microstrip antenna multifrequency, the work of miniaturization mainly contains following methods: (1) adopts multiple-layer overlapped paster structure, and utilize two stacked modes of paster to form two resonator correspondences and different resonance frequencys and carry out double frequency radiation, but complex structure; (2) monocrepid, a plurality of paster structures adopt the form that the different paster of resonance frequency is nested to form double resonance, have L shaped, G shape, C shape, U-shaped etc., and can reduce the volume of antenna.Although antenna size is reduced to a certain degree, cover the small size antenna of all frequency ranges of WLAN/WiMAX seldom, therefore design small-sized multi-frequency WLAN/WiMAX antenna significant.
Summary of the invention
Main purpose of the present invention is that the shortcoming that overcomes prior art is with not enough, a kind of miniaturized multifrequency band WLAN/WiMAX antenna is provided, this antenna is on the basis of current microstrip-monopole sub antenna, by some settings, make its bandwidth and frequency meet the requirement of WALN/WiMAX frequency, and compact dimensions, simple in structure, easily to make, cost is low.
Object of the present invention realizes by following technical scheme: a kind of miniaturized multifrequency band WLAN/WiMAX antenna, comprise floor layer, substrate layer, microband paste layer, and a feed structure is set on microband paste layer, its feed port is arranged on substrate layer; On described microband paste layer, arrange one for realizing the S shaped microstrip structure of the radiation of 3.5GHz, this S shaped microstrip structure is comprised of the first microband paste, the second microband paste and the 3rd microband paste, above-mentioned 3 microband paste width are adjustable, and the first microband paste is connected with feed port; On described microband paste layer, also arrange one for realizing the notched loop configuration of the radiation of 2.4GHz, by the 4th microband paste, the 5th microband paste and the 6th microband paste, formed, above-mentioned 3 microband paste width are adjustable, between the 5th microband paste and the 6th microband paste, are annular breach.By S shaped microstrip structure, can realize the radiation of 3.5GHz, by notched loop configuration, can realize the radiation of 2.4GHz, meet bandwidth requirement and frequency requirement.
Preferably, described S shaped microstrip shape structure is connected by a L shaped microband paste with notched loop configuration, and L shaped micro-band shape patch size is adjustable.Change the size of L shaped paster structure, can realize the impedance matching of 2.4GHz and 3.5GHz simultaneously, and meet its broadband requirement.
Preferably, described substrate layer is FR4 substrate, and the relative dielectric constant of FR4 is 4.4, and dielectric loss is 0.02.
Preferably, described feed structure is ladder feed structure, and its feed port is arranged at the right of FR4 substrate.Adopt this structure can effectively increase antenna resonance path, reduce the size of antenna, and can realize better impedance matching.
Preferably, described ladder feed structure comprises the 7th microband paste and the 8th microband paste, and the 8th microband paste is connected with the first microband paste, opens a rectangular aperture on the floor below the 8th microband paste.Be used for realizing the radiation of 5GHz, the length of this rectangular aperture, width and determining positions the matching effect of resonance frequency and frequency.Adopting deficiency floor is in order to increase the matching effect of impedance.
Compared with prior art, tool has the following advantages and beneficial effect in the present invention:
1, the present invention connects by a S shaped microstrip shape structure is set the radiation that a notched loop configuration has realized 2.4GHz and 3.5GHz, and this structure can increase the resonant path of antenna, and then reduces the size of antenna.
2, the present invention, by opening a rectangular aperture on the floor below one of them microband paste of ladder feed structure, realizes the radiation of 5GHz, can make like this degree of coupling between frequency reduce, and controls alone resonance frequency.
3, the present invention realizes the radiation of WLAN2.4/5.2/5.8GHz and WiMAX3.5/5.5GHz dexterously by paster structure, gap structure, inclined to one side feed structure, compact conformation, and antenna size is little.
Accompanying drawing explanation
Fig. 1 is the side structure schematic diagram of antenna in embodiment 1;
Fig. 2 is the Facad structure schematic diagram of antenna in embodiment 1;
Fig. 3 is the Electromagnetic Simulation curve chart of antenna shown in Fig. 2;
Fig. 4 is the Facad structure schematic diagram of antenna in embodiment 2;
Fig. 5 is the Electromagnetic Simulation curve chart of antenna shown in Fig. 4.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
As shown in Figure 1, described in the present embodiment, miniaturized multifrequency band WLAN/WiMAX antenna comprises floor layer 3, FR4 substrate 1, microband paste layer 2, on the upper strata of FR4 substrate 1, it is microband paste layer 2, lower floor is floor layer 3, one ladder feed structure (being comprised of the 7th microband paste 4 and the 8th microband paste 5) is set on microband paste layer 2, by the 7th microband paste 4 and the 8th microband paste 5, realize the coupling of feed port, feed port is placed in to the right of FR4 substrate 1, can effectively increase its resonant path, reduce the size of antenna.The relative dielectric constant of FR4 is 4.4.
As shown in Figure 2, described in the present embodiment, miniaturized multifrequency band WLAN/WiMAX antenna is a kind of microstrip antenna based on microband paste and gap, by a S shaped microstrip shape structure, realize the radiation of 3.5GHz, a notched loop configuration realizes the radiation of 2.4GHz, be applicable to WLAN2.4GHz and WiMAX3.5GHz, compact dimensions, simple in structure, easily make, cost is low.The Electromagnetic Simulation curve of this antenna as shown in Figure 3.
As shown in Figure 2, S shaped microstrip structure is comprised of the first microband paste 6, the second microband paste 7 and the 3rd microband paste 8, and the first microband paste 6 is connected with feed port.This structure realizes the radiation of WiMAX3.5GHz, the first microband paste 6, the second microband paste 7 are different with the width of the 3rd microband paste 8, this is due to the width that passes through to regulate above-mentioned 3 microband pastes, can effectively improve the impedance inductance of antenna, the effective bandwidth that increases antenna, makes it meet bandwidth requirement 3.4-3.69GHz.
As shown in Figure 2, notched loop configuration is comprised of the 4th microband paste 9, the 5th microband paste 10 and the 6th microband paste 11, realize the resonance of WLAN2.4GHz, between the 5th microband paste and the 6th microband paste, it is annular breach, by adjusting the position of breach, can adjust resonance frequency, change the width of the 4th microband paste 9, the 5th microband paste 10 and the 6th microband paste 11, realize antenna in the impedance matching of 2.4GHz.
Between S shaped microstrip structure and notched loop configuration, a L shaped microband paste 12 is also set, change the size of L shaped structure, can realize the impedance matching of 2.4GHz and 3.5GHz simultaneously, and meet its broadband requirement.
Embodiment 2
The present embodiment except following characteristics other structures with embodiment 1:
As shown in Figure 4, described in the present embodiment, on the floor of antenna below the 8th microband paste, open a rectangular aperture 13.For realizing the radiation of WLAN5.2/5.8GHz and WiMAX5.5GHz, the length of rectangular aperture, width and determining positions the matching effect of resonance frequency and frequency.The Electromagnetic Simulation curve of this antenna as shown in Figure 5.
The present embodiment is realized the radiation of 2.4GHz and 3.5GHz by a S shaped microstrip shape structure and notched loop configuration, by the rectangular aperture 13 of opening on floor, realize the radiation of 5GHz, meet the radiation of WLAN2.4/5.2/5.8GHz and WiMAX3.5/5.5GHz, compact conformation, antenna size is little.
Above-described embodiment is preferably execution mode of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (5)
1. a miniaturized multifrequency band WLAN/WiMAX antenna, comprises floor layer, substrate layer, microband paste layer, and a feed structure is set on microband paste layer, and its feed port is arranged on substrate layer; It is characterized in that, on described microband paste layer, arrange one for realizing the S shaped microstrip structure of the radiation of 3.5GHz, this S shaped microstrip structure is comprised of the first microband paste, the second microband paste and the 3rd microband paste, above-mentioned 3 microband paste width are adjustable, and the first microband paste is connected with feed port; On described microband paste layer, also arrange one for realizing the notched loop configuration of the radiation of 2.4GHz, by the 4th microband paste, the 5th microband paste and the 6th microband paste, formed, above-mentioned 3 microband paste width are adjustable, between the 5th microband paste and the 6th microband paste, are annular breach.
2. miniaturized multifrequency band WLAN/WiMAX antenna according to claim 1, is characterized in that, described S shaped microstrip shape structure and notched loop configuration, and both connect by a L shaped paster, and L shaped patch size is adjustable.
3. miniaturized multifrequency band WLAN/WiMAX antenna according to claim 1, is characterized in that, described substrate layer is FR4 substrate, and the relative dielectric constant of FR4 is 4.4, and dielectric loss is 0.02.
4. miniaturized multifrequency band WLAN/WiMAX antenna according to claim 3, is characterized in that, described feed structure is a ladder feed structure, and its feed port is arranged at the right of FR4 substrate.
5. miniaturized multifrequency band WLAN/WiMAX antenna according to claim 1, it is characterized in that, described ladder feed structure comprises the 8th microband paste and the 9th microband paste, and the 9th microband paste is connected with the first microband paste, on the floor below the 9th microband paste, opens a rectangular aperture.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552536A (en) * | 2016-02-23 | 2016-05-04 | 深圳大学 | Monopole dual-band WLAN/WiMAX antenna |
| CN105870611A (en) * | 2015-01-21 | 2016-08-17 | 冠捷投资有限公司 | Broadband microstrip antenna |
| CN105896035A (en) * | 2016-04-22 | 2016-08-24 | 北京邮电大学 | Multifrequency miniaturized terminal antenna based on loading technology unified model |
| CN105990693A (en) * | 2015-03-03 | 2016-10-05 | 冠捷投资有限公司 | Multi-band dual-polarized antenna |
| CN108428999A (en) * | 2017-02-15 | 2018-08-21 | 恩智浦有限公司 | Antenna |
| CN113258279A (en) * | 2021-05-12 | 2021-08-13 | 福州大学 | 5G full-network-through miniaturized omnidirectional antenna based on metamaterial loading |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105870611A (en) * | 2015-01-21 | 2016-08-17 | 冠捷投资有限公司 | Broadband microstrip antenna |
| CN105870611B (en) * | 2015-01-21 | 2019-03-22 | 冠捷投资有限公司 | Broadband microstrip antenna |
| CN105990693A (en) * | 2015-03-03 | 2016-10-05 | 冠捷投资有限公司 | Multi-band dual-polarized antenna |
| CN105990693B (en) * | 2015-03-03 | 2019-02-01 | 冠捷投资有限公司 | Multiband dual polarized antenna |
| CN105552536A (en) * | 2016-02-23 | 2016-05-04 | 深圳大学 | Monopole dual-band WLAN/WiMAX antenna |
| CN105552536B (en) * | 2016-02-23 | 2018-05-29 | 深圳大学 | A kind of monopole double frequency-band WLAN/WiMAX antennas |
| CN105896035A (en) * | 2016-04-22 | 2016-08-24 | 北京邮电大学 | Multifrequency miniaturized terminal antenna based on loading technology unified model |
| CN105896035B (en) * | 2016-04-22 | 2019-04-12 | 北京邮电大学 | A kind of small-sized multi-frequency terminal antenna based on loading technique unified model |
| CN108428999A (en) * | 2017-02-15 | 2018-08-21 | 恩智浦有限公司 | Antenna |
| CN108428999B (en) * | 2017-02-15 | 2021-08-06 | 恩智浦有限公司 | Antenna with a shield |
| CN113258279A (en) * | 2021-05-12 | 2021-08-13 | 福州大学 | 5G full-network-through miniaturized omnidirectional antenna based on metamaterial loading |
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Application publication date: 20140827 |