CN103779654A - Double-frequency broadband bowtie antenna adopting self-similarity feed technology - Google Patents
Double-frequency broadband bowtie antenna adopting self-similarity feed technology Download PDFInfo
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- CN103779654A CN103779654A CN201410014745.3A CN201410014745A CN103779654A CN 103779654 A CN103779654 A CN 103779654A CN 201410014745 A CN201410014745 A CN 201410014745A CN 103779654 A CN103779654 A CN 103779654A
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Abstract
The invention discloses a double-frequency broadband bowtie antenna adopting a self-similarity feed technology. The whole antenna includes an upper-layer metal and a lower-layer metal. The upper-layer metal and the lower-layer metal cover the two faces of a dielectric slab respectively. A feed structure is a metal stripe-shaped line. A self-similarity feed structure is a bowtie-shaped metal sheet and includes two symmetrical trapezoid metals and a rectangular metal stripe-shaped line connected directly with a feed line. A parasitic radiating unit is a pair of symmetrical rectangular metal stripe-shaped lines which are designed at the two sides of the bowtie-shaped feed structure. The parasitic radiating unit includes two metal lines. A bowtie-shaped gap etched on the floor is a gap similar with the self-similarity feed structure. The gap includes two trapezoid gaps and a rectangular gap. The double-frequency broadband bowtie antenna adopting the self-similarity feed technology adopts the self-similarity feed structure which is more novel compared with the prior feed structures; and the antenna is capable of covering all frequency bands needed in WLAN and WiMAX communication so that compared with the prior antennae, the double-frequency broadband bowtie antenna has a double-frequency broadband characteristic.
Description
Technical field
The invention belongs to communication technical field, relate in particular to a kind of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique.
Background technology
As the important achievement of modern development in science and technology, nowadays the communication technology has been the indispensable pith of our daily life.But, between each communication standard, be that frequency interferences and the compatibling problem that technical foundation is brought becomes increasingly conspicuous based on centered carrier, cannot meet the requirement of growing high speed access; On the other hand, following wireless network not only comprises person to person's communication, and comprise the network of communicating by letter between people and terminal and terminal, in fact this is exactly the content that immanent radio communication (PWC) comprises, i.e. any place of any time and the interactive ability of other wireless terminals.For these on the horizon, immanent wireless communication technologys, in the urgent need to a kind of low cost, low-power consumption, multi-functional solution.
Multiband aerial technology is suggested and receives much attention as one of solution of this problem, relies on it good compatibility of multiple communication standards and multi-functional advantage to be become rapidly to the new focus of industry research: in synthetic aperture radar, mobile communication and global positioning system, conventionally to need two-band or multiband work.In wireless communication field, mobile phone terminal and WALN communication system all need even three antennas of frequently working of double frequency.And due to wlan system in wireless communication field, the frequency spectrum range of definition the disunity of every country, this just needs designed multifrequency antenna not only to need to have the feature of multiple-frequency operation, and the while should have the feature of broadband operation.Therefore, a simple micro radio communication equipment need to work in multiple frequency ranges conventionally, to simplify the design of transceiver terminal communication system and to reduce its cost.Now a multiple frequency broad band antenna that can simultaneously work in multiple frequency ranges just becomes first-selection, and the advantage of its maximum is just that an antenna can realize the service behaviour of multiple antennas simultaneously.Under such technical background, the design of multiple frequency broad band antenna becomes very popular and important problem.
And double-frequency broadband antenna applications is the most extensive in multifrequency antenna, in open source literature, the antenna of existing a large amount of multiband work occurs at present, wherein adopting more method is to adopt multiple resonance structures to realize the performance of multiple-frequency operation, but, the feature having due to resonance structure self, all there is the feature of arrowband in the antenna that causes adopting realization in this way, can not meet the demand of the multiband work of multiple communication system different systems to antenna.Therefore, for modern wireless communication systems, a kind of multiple frequency broad band antenna that can be operated in multiple radio bands of exigence.
Summary of the invention
The object of the present invention is to provide a kind of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique, be intended to solve that the more multiple resonance structures of employing of existing double-frequency broadband antenna are realized multiple-frequency operation and the arrowband problem that causes.Because resonance structure self has, cause the existing antenna of adopting realization in this way all to have the feature of arrowband, can not meet the problem of the demand of the multiband work of multiple communication system different systems to antenna.
The invention provides a kind of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique, this antenna comprises feed structure, self similarity feed structure, parasitic radiation unit, dielectric-slab, floor and is etched in the bow-tie type gap on floor.So-called self similarity feed structure refers to that this feed structure is similar with the bow-tie type gap structure of the main radiator as antenna, and between its physical size, has certain quantitative relationship.
Whole antenna is made up of upper and lower double layer of metal, and upper/lower layer metallic covers respectively the two sides of dielectric-slab, and feed structure is the strip line of a metal;
Self similarity feed structure, is a bow-tie type sheet metal, by two symmetrical trapezoidal metals with and a rectangular metal strip line being directly connected with feeder line form, this three part is to be directly connected;
Parasitic radiation unit is the rectangular metal strip line of a pair of symmetry, is designed in the both sides of bow-tie type feed structure, and parasitic radiation unit is by two metal wires and form.
Floor is the metal level that one deck covers dielectric-slab another side, and the size of its size and dielectric-slab is in full accord;
The bow-tie type gap being etched in above floor is one and the similar gap of self similarity feed structure structure, and this gap is made up of two trapezoid slits and rectangular aperture, and these three parts are directly connected.
Further, the size of described feed structure has been carried out careful design, can meet the requirement of antenna to input impedance, and exist certain quantitative relationship between the physical dimension in the etched gap of its physical dimension and floor, this quantitative relation formula passes through careful design, to reach optimum impedance matching effect.
Further, the one that described feed microstrip line structure is feeding classification, it can be replaced by coplanar wave guide feedback structure, and the latter also can realize the effect in the Two bors d's oeuveres broadband of this antenna.
Further, two metal wires of composition parasitic radiation unit have duplicate physical size, its width is to carry out comprehensive Design according to other portion sizes of antenna and service behaviour to draw, and the length of metal wire is about 1/4th of antenna maximum resonance frequency place wavelength.Metal tape line produces resonance at HFS, the high frequency bandwidth of antenna is expanded, to meet the bandwidth requirement of wireless communication system.
Further, the position of described parasitic radiation unit can be changed, and, from changing the another side to dielectric-slab with the same face of feed, its correspondence position does not change, also can realize by this method and expand the object of bandwidth, and can reach effect about the same at another side.
effect gathers
A kind of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique of the present invention, this antenna adopts the feed structure of self similarity, this structure is more novel than previous feed structure, can cover the WLAN needed all frequency ranges of communicating by letter with WiMAX, compared with existing antenna, it has the feature of double-frequency broadband.
Accompanying drawing explanation
Fig. 1 is the double-frequency broadband Bow―tie antenna superstructure schematic diagram of the employing self similarity feeding technique that provides of the embodiment of the present invention;
Fig. 2 is the double-frequency broadband Bow―tie antenna fabric schematic diagram of the employing self similarity feeding technique that provides of the embodiment of the present invention;
Fig. 3 is the end view of the double-frequency broadband Bow―tie antenna of the employing self similarity feeding technique that provides of the embodiment of the present invention;
In figure: 1, feed structure; 2, self similarity feed structure; 201, the first trapezoidal metal; 202, rectangular metal strip line; 203, the second trapezoidal metal; 3, parasitic radiation unit; 301, the first metal wire; 302, the second metal wire; 4, dielectric-slab; 5, floor; 6, bow-tie type layer slot; 601, the first trapezoid slit layer; 602, rectangular aperture layer; 603, the second trapezoid slit layer.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1-Fig. 3 shows the structure of the double-frequency broadband Bow―tie antenna of employing self similarity feeding technique of the present invention, as shown in the figure, the present invention is achieved in that a kind of this antenna of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique comprises feed structure 1, self similarity feed structure 2, parasitic radiation unit 3, dielectric-slab 4, floor 5 and is etched in the bow-tie type layer slot 6 on floor;
Whole antenna is made up of upper and lower double layer of metal, and upper/lower layer metallic covers respectively the two sides of dielectric-slab 4, and feed structure 1 is the strip line of a metal;
Self similarity feed structure 2, is a bow-tie type sheet metal, is made up of with the second trapezoidal metal 203 and a rectangular metal strip line 202 being directly connected with feeder line two the first symmetrical trapezoidal metals 201, and this three part is to be directly connected;
The rectangular metal strip line that parasitic radiation unit 3 is a pair of symmetry, is designed in the both sides of bow-tie type feed structure, and parasitic radiation unit 3 is made up of two the first metal wires 301 and the second metal wire 302.
Be etched in bow-tie type gap 6 above, floor 5 and be one with the self similarity feed structure 2 similar gaps of structure, this gap is made up of two the first trapezoid slits 601 and the second trapezoid slit 603 and rectangular aperture 602, these three parts are directly connected.
The size of feed structure of the present invention has been carried out careful design, can meet the requirement of antenna to input impedance; Feed microstrip line structure can replace with coplanar wave guide feedback structure, and this structure also can realize double-frequency broadband function; Two metal wires of composition parasitic radiation unit 3 have duplicate physical size; The position of parasitic radiation unit can be changed, and from changing the another side to dielectric-slab with the same face of feed, also can realize by this method the object of expanding bandwidth.
A kind of double-frequency broadband Bow―tie antenna that adopts self similarity feeding technique of the present invention, this antenna adopts the feed structure of self similarity, this structure is more novel than previous feed structure, can cover the WLAN needed all frequency ranges of communicating by letter with WiMAX, compared with existing antenna, it has the feature of double-frequency broadband.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that performing creative labour can make or distortion still within protection scope of the present invention.
Claims (4)
1. one kind adopts the double-frequency broadband Bow―tie antenna of self similarity feeding technique, it is characterized in that, the double-frequency broadband Bow―tie antenna of described employing self similarity feeding technique comprises: feed structure, self similarity feed structure, parasitic radiation unit, dielectric-slab, floor and be etched in the bow-tie type gap on floor;
Whole antenna is made up of upper and lower double layer of metal, and upper/lower layer metallic covers respectively the two sides of dielectric-slab, and feed structure is the strip line of a metal;
Self similarity feed structure, is a bow-tie type sheet metal, by two the first symmetrical trapezoidal metals, the second trapezoidal metal with and a rectangular metal strip line being directly connected with feeder line form, this three part is directly connected;
Parasitic radiation unit is symmetrical rectangular metal strip line, and parasitic radiation unit is arranged on the both sides of bow-tie type feed structure;
Floor is the metal level that one deck covers dielectric-slab another side, and the size of floor size and dielectric-slab is in full accord;
Be etched in bow-tie type gap above floor and be one with the gap of self similarity feed structure structure, gap is made up of two the first trapezoid slits, the second trapezoid slit and rectangular aperture, these three parts are directly connected.
2. the double-frequency broadband Bow―tie antenna of employing self similarity feeding technique as claimed in claim 1, is characterized in that, described feed microstrip line structure can replace with coplanar wave guide feedback structure.
3. the double-frequency broadband Bow―tie antenna of employing self similarity feeding technique as claimed in claim 1, it is characterized in that, the first metal wire of composition parasitic radiation unit is the same with the second size of wire, the length of metal band-shaped line is the antenna quarter-wave of high resonance frequency, produce extra resonance point at the HFS of antenna, play the effect of widening antenna high frequency bandwidth.
4. the double-frequency broadband Bow―tie antenna of employing self similarity feeding technique as claimed in claim 1, it is characterized in that, the position of described parasitic radiation unit can be changed, and from changing the another side to dielectric-slab with the same face of feed, also can realize the object of expanding bandwidth.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104241839A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband planar bowtie antenna of dual-band trapped wave reflector |
| CN106972250A (en) * | 2017-04-07 | 2017-07-21 | 深圳市景程信息科技有限公司 | High isolation dual polarized wide frequency antenna |
| CN107093792A (en) * | 2017-04-07 | 2017-08-25 | 深圳市景程信息科技有限公司 | Axe shape bimodulus monopole antenna |
| CN107181051A (en) * | 2017-04-07 | 2017-09-19 | 深圳市景程信息科技有限公司 | The high isolation dual polarized wide frequency antenna of restructural |
| CN107706546A (en) * | 2017-09-20 | 2018-02-16 | 哈尔滨工程大学 | A kind of multiband antenna of parasitic couplings feed |
| CN108777355A (en) * | 2018-04-17 | 2018-11-09 | 哈尔滨工程大学 | A kind of low section broad-band antenna |
| CN108832287A (en) * | 2018-06-20 | 2018-11-16 | 袁涛 | Three frequency range WiFi antennas |
| CN109390668A (en) * | 2018-09-19 | 2019-02-26 | 南京航空航天大学 | A kind of frequency reconfigurable liquid medium resonant antenna |
| CN110265775A (en) * | 2019-03-06 | 2019-09-20 | 中国船舶重工集团公司第七二三研究所 | A kind of multiband teledish based on novel compositions loading method |
| CN111602299A (en) * | 2017-11-10 | 2020-08-28 | 雷神公司 | Thin radiator for Additive Manufacturing Technology (AMT) |
| CN112201934A (en) * | 2020-09-23 | 2021-01-08 | 华中科技大学 | Dual-frequency antenna and antenna array |
| CN113571910A (en) * | 2021-07-30 | 2021-10-29 | 海信集团控股股份有限公司 | Millimeter wave antenna, vehicle-mounted millimeter wave radar and automobile |
| CN114552219A (en) * | 2022-01-20 | 2022-05-27 | 电子科技大学 | Ultralow-profile double-frequency single-layer small mobile antenna based on MGAA unit |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241839A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband planar bowtie antenna of dual-band trapped wave reflector |
| CN106972250A (en) * | 2017-04-07 | 2017-07-21 | 深圳市景程信息科技有限公司 | High isolation dual polarized wide frequency antenna |
| CN107093792A (en) * | 2017-04-07 | 2017-08-25 | 深圳市景程信息科技有限公司 | Axe shape bimodulus monopole antenna |
| CN107181051A (en) * | 2017-04-07 | 2017-09-19 | 深圳市景程信息科技有限公司 | The high isolation dual polarized wide frequency antenna of restructural |
| CN107706546B (en) * | 2017-09-20 | 2021-02-12 | 哈尔滨工程大学 | Multi-band antenna with parasitic coupling feed |
| CN107706546A (en) * | 2017-09-20 | 2018-02-16 | 哈尔滨工程大学 | A kind of multiband antenna of parasitic couplings feed |
| CN111602299A (en) * | 2017-11-10 | 2020-08-28 | 雷神公司 | Thin radiator for Additive Manufacturing Technology (AMT) |
| CN108777355A (en) * | 2018-04-17 | 2018-11-09 | 哈尔滨工程大学 | A kind of low section broad-band antenna |
| CN108832287A (en) * | 2018-06-20 | 2018-11-16 | 袁涛 | Three frequency range WiFi antennas |
| CN109390668A (en) * | 2018-09-19 | 2019-02-26 | 南京航空航天大学 | A kind of frequency reconfigurable liquid medium resonant antenna |
| CN110265775A (en) * | 2019-03-06 | 2019-09-20 | 中国船舶重工集团公司第七二三研究所 | A kind of multiband teledish based on novel compositions loading method |
| CN110265775B (en) * | 2019-03-06 | 2020-12-25 | 中国船舶重工集团公司第七二三研究所 | Multi-band dish antenna based on novel combined loading mode |
| CN112201934A (en) * | 2020-09-23 | 2021-01-08 | 华中科技大学 | Dual-frequency antenna and antenna array |
| CN113571910A (en) * | 2021-07-30 | 2021-10-29 | 海信集团控股股份有限公司 | Millimeter wave antenna, vehicle-mounted millimeter wave radar and automobile |
| CN113571910B (en) * | 2021-07-30 | 2024-04-05 | 海信集团控股股份有限公司 | Millimeter wave antenna, vehicle-mounted millimeter wave radar and automobile |
| CN114552219A (en) * | 2022-01-20 | 2022-05-27 | 电子科技大学 | Ultralow-profile double-frequency single-layer small mobile antenna based on MGAA unit |
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Effective date of registration: 20170126 Address after: Dingshuzhen pottery road Yixing City, Jiangsu province 214200 Wuxi City No. 138 Patentee after: Jiangsu Hengxin Science & Technology Co., Ltd. Address before: Taibai Road Shaanxi Yanta District 710071 city of Xi'an province No. 2 Patentee before: Xidian University |