CN101699658A - High-gain broadband omnidirectional antenna used for mobile communication - Google Patents
High-gain broadband omnidirectional antenna used for mobile communication Download PDFInfo
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- CN101699658A CN101699658A CN200910213030A CN200910213030A CN101699658A CN 101699658 A CN101699658 A CN 101699658A CN 200910213030 A CN200910213030 A CN 200910213030A CN 200910213030 A CN200910213030 A CN 200910213030A CN 101699658 A CN101699658 A CN 101699658A
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Abstract
The invention relates to a high-gain broadband omnidirectional antenna used for mobile communication. A main radiation unit of the high-gain broadband omnidirectional antenna is formed by connecting two trough line antennae in parallel, i.e. an upper radiation unit (1) and a lower radiation unit (3) of the trough line antennae are connected in parallel; a trough line part adopts an asymmetrical shape formed by an index gradual change line and a linear gradual change structure; a parasitic unit (2) forms orthogonal structure distribution with the upper radiation unit (1) of the index gradual change trough line antenna; and the parasitic unit and the trough line antenna unit form an orthogonal structure, and the trough line part adopts the asymmetrical shape formed by the index gradual change line and the linear gradual change structure, which not only improves the impedance bandwidth of the antennae well, but also has a very good omnidirectional radiation property. The invention has higher radiation efficiency and high gain, enhances the communication quality, improves a communication environment, increases the working bandwidth of the antennae, improves the impedance bandwidth of the antennae, has low cost and is convenient for mass production.
Description
Technical field
The present invention relates to a kind of communication that is applied to, conduct transmits and receives the broadband omni-directional antenna of radio signal in interior all communication networks of moving communicating field.
Background technology
Because radio communication equipment and electronic message unit be towards multifunction, miniaturization, ultra broadband and the friendly direction of coordinating with surrounding environment develop, and this makes broadband, and miniaturization becomes one of hot subject of domestic and international research.It relates to the wideband impedance match technology of antenna, the loading technique of antenna, the reactance compensation technique of antenna, the advanced technology and the technologies such as optimal design of miniature antenna profile.Solve some shortcomings of existing antenna simultaneously: (1) requires the ratio of gains of antenna higher at present, such as the gain that requires 5-6dBi, and existing antenna great majority are dipole antenna and monopole antenna, and directional diagram equates up and down, so some electric wave is consumed, therefore gain is lower.(2) antenna of user's use at present requires miniaturization, require to move can well be installed in occasions such as street lamp, Lawn lamp and advertisement placard with antenna, so the miniaturization of antenna becomes the important development direction of present mobile communication.(3) present communication is more and more higher to the requirement of bandwidth, and the antenna of mobile communication use at present requires to realize backward compatible, has requirement to realize that the station is total to the location altogether, has solved existing resources phenomenon in short supply.Present antenna can not satisfy present communication requirement, and particularly double frequency broadband high-gain aerial does not reach requirement.(4) present sub-district covers and embellished antenna, adopts monopole antenna and dipole antenna mostly, and the control ratio of frequency band is difficulty, simultaneously in order to make full use of existing resources, the demand that adapts to varying environment requires the flexible design of antenna, can satisfy the demand of different occasions.Therefore the antenna of a plurality of frequency ranges is integrated into a kind of antenna structure, the design ultra-wideband antenna is a kind of trend of current technical development, also is the major impetus that realizes device miniaturization.Antenna product in the past is to design at different working frequency range, and stock size and volume are all bigger, variant communication system independent design, can be compatible or compatible degree depend on the bandwidth and the cost of antenna system.And development product all is the directional antenna product, though broadband omni-directional antenna product few in number, complex structure are also arranged, design loaded down with trivial detailsly, versatility is poor, the processing cost height, and there is certain defective in performance, should not promote, this mobile communication cells covers and has caused certain degree of difficulty, therefore develops multiband, miniaturization, simple in structure, flexible design, broadband omni-directional antenna with low cost are the most important things of current research.
Summary of the invention
1, technical problem to be solved:
The invention provides a kind of have higher radiation efficiency and high gain, a kind of high-gain broadband omnidirectional antenna that is used for mobile communication simple in structure at above deficiency.
2, technical scheme
A kind of high-gain broadband omnidirectional antenna that is used for mobile communication comprises ground plate, primary radiation unit and feed structure, parasitic element; The primary radiation unit is composed in parallel by two line of rabbet joint antennas, i.e. the following radiating element parallel connection of the last radiating element of line of rabbet joint antenna and line of rabbet joint antenna;
The asymmetric shape that the line of rabbet joint partly adopts exposure and rectigradation structure to constitute; The last radiating element of parasitic element and the index tapered slot antenna structure distribution that is orthogonal;
Line of rabbet joint antenna is made up of excitation region, radiation area and transmission range;
Excitation region, radiation area and transmission range adopt poly-tetrafluoro medium as support;
Main feeder passes firm banking and ground plate is given line of rabbet joint antenna feed, the following radiating element of line of rabbet joint antenna and the outer conductor of feeder cable link together, the last radiating element of the inner wire of feeder cable and line of rabbet joint antenna links together, the inner wire of feeder cable partly is connected with the index gradual change of the line of rabbet joint in parallel, outer conductor partly is connected at the tie point place with rectigradation, forms radiation area and excitation region.
Described exposure, the equation of its exponential curve are y=± Ae
Px+ D, y are half of line of rabbet joint spacing, and A is a constant, and P is an amplification factor, and D is a deviation position, and can get D during design is zero.
Described rectigradation structure, its rectigradation curve's equation is: y=kx+B, k are proportionality coefficient, and x is the length of radiating aperture, and B is the position parameter, can be set to zero.
Line of rabbet joint exponential fade profile can adopt multi-section circular arc match structure to form.
Extension apparatus and fluting unit, crack that last radiating element, following radiating element and parasitic radiation unit can adopt guide electromagnetic waves to propagate.
3, beneficial effect
(1) the present invention utilizes the broadband character of line of rabbet joint antenna, designs a high-gain broadband omnidirectional antenna, and bandwidth of the present invention surpasses 130%, and higher radiation efficiency and high gain are arranged.(2) the present invention is a omnidirectional antenna, can be installed in the Plastic Drum and the radome of Any shape in, directional diagram is more satisfactory, can cover whole space, CURRENT DISTRIBUTION is even, the covering of realization non-blind area has improved communication quality greatly, has improved communication environment.(3) the present invention adopts asymmetrical slot line structure and shunt slot line structure to form omnidirectional antenna, not only improves the broadband impedance matching of antenna, increases the bandwidth of operation of antenna, and good omnidirectional radiation characteristic is provided simultaneously.(4) simple, the flexible design of the antenna structure of the present invention's proposition can be optimized corresponding antenna size according to different radomes, is convenient to actual production and popularization.(5) the present invention's employing coaxial feed, material is easy, produces easily, and cost is low, is convenient to produce in batches.
Description of drawings
Fig. 1 is the front view of structural representation of the present invention;
Fig. 2 is the end view of structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is done explanation in further detail.
Fig. 1, wherein 1 be last radiating element, 2 for parasitic element, 3 for following radiating element, 4 for poly-tetrafluoro, 5 for ground plate, 6 for firm banking, 7 for main feeder, 8 for, 9 be set bolt for transmission range, 16 for radiation area, 15 for excitation region, 14 for tie point, 13 for N Connector, 12 for outer conductor, 11 for inner wire, 10.
A kind of high-gain broadband omnidirectional antenna that is used for mobile communication comprises ground plate, primary radiation unit, parasitic element and feed structure.
The primary radiation unit of antenna composes in parallel (following radiating element 3 parallel connections that are the last radiating element 1 and the line of rabbet joint antenna of line of rabbet joint antenna) by two line of rabbet joint antennas;
The asymmetric shape that the line of rabbet joint partly adopts exposure and rectigradation structure to constitute, the last radiating element 1 of parasitic element 2 and the index tapered slot antenna structure distribution that is orthogonal;
The equation of its exponential curve is y=± Ae
Px+ D, y are half of line of rabbet joint spacing, and A is a constant, and P is an amplification factor, and D is a deviation position, and can get D during design is zero;
Its rectigradation curve's equation is: y=kx+B, k are proportionality coefficient, and x is the length of radiating aperture, and B is the position parameter, can be set to zero;
Line of rabbet joint antenna is made up of excitation region 13, radiation area 14 and transmission range 15;
Main feeder 7 passes firm banking 6 and ground plate 5 is given line of rabbet joint antenna feed, the following radiating element 3 of line of rabbet joint antenna links together with the outer conductor 10 of feeder cable, the inner wire 9 of feeder cable links together with the last radiating element 1 of line of rabbet joint antenna, the inner wire 9 of feeder cable partly is connected with the index gradual change of the line of rabbet joint in parallel, outer conductor 10 partly is connected at tie point 12 places with rectigradation, forms radiation area 14 and excitation region 13.Entire antenna adopts fixedly entire antenna structure of set bolt 16 according to structure shown on Fig. 1, and the N shape connector 11 that last antenna passes through main feeder 7 is connected with radio-frequency front-end.
Line of rabbet joint exponential fade profile can adopt multi-section circular arc match structure to form.
Extension apparatus and fluting unit, crack that radiating element (radiating element comprises radiating element 1, following radiating element 3 and parasitic radiation unit 2) can adopt guide electromagnetic waves to propagate.
End in the exponential fade profile of line of rabbet joint antenna is set up the DC channel technology, improves the impedance matching and the radiation bandwidth of antenna.
Compare with common line of rabbet joint antenna, this antenna overall width is generally the half wavelength of the lower frequency limit of design of communications frequency band, and this programme is in order to realize the demand of miniaturization Design, and the actual size that adopts is far smaller than λ
Max/ 2 (λ
MaxFor the farm labourer of service band makes wavelength), in this embodiment, we adopt the radiating aperture of line of rabbet joint antenna less than normal λ
Max/ 2, though the gain of common line of rabbet joint antenna is very high, its radiating aperture is all at 1.3 more than the wavelength, and the radiating aperture of antenna of the present invention is less, and therefore gain decreases relatively, but can satisfy the use of mobile communication base station fully.Adopt the slot line structure of index gradual change and rectigradation simultaneously, size is further dwindled.The height of this all channel antenna can change along with the variation of grading structure, to adapt to different installation environment demands.
The advantage of this structure:
A. because the notch antenna that adopts adopts index gradual change and rectigradation line to form, both taken into account wide band impedance matching property, helped the miniaturization Design of antenna simultaneously, and made antenna to use as embellished antenna.
B. antenna adopts the structure of quadrature parasitic element, can be good at improving the antenna pattern of azimuth plane, improves the deviation in roundness of antenna, satisfies omnidirectional's characteristic demand of antenna.
The present invention adopts the radio wave propagation principle, and electric wave is along the open direction of the line of rabbet joint, outwards radiated electromagnetic wave, high frequency opens emittance gradually because of excitation region, low frequency can extend to maximum radiating aperture, and the shape of same substrate is consistent with radiant body, all constitutes grading structure, therefore can cover very wide bandwidth, satisfy CDMA2000, GSM, 3G and Bluetooth communication demand, can also cover simultaneously the lower portion of UWB, good omnidirectional radiation characteristic is provided.
Though the present invention with preferred embodiment openly as above; but they are not to be used for limiting the present invention; anyly be familiar with this skill person; without departing from the spirit and scope of the invention; from when can doing various variations or retouching, so being as the criterion of should being defined with the application's claim protection range of protection scope of the present invention.
Claims (5)
1. a high-gain broadband omnidirectional antenna that is used for mobile communication comprises ground plate, primary radiation unit and feed structure, it is characterized in that: also comprise parasitic element (2); The primary radiation unit is composed in parallel by two line of rabbet joint antennas, i.e. following radiating element (3) parallel connection of the last radiating element (1) of line of rabbet joint antenna and line of rabbet joint antenna;
The asymmetric shape that the line of rabbet joint partly adopts exposure and rectigradation structure to constitute; The last radiating element (1) of parasitic element (2) and the index tapered slot antenna structure distribution that is orthogonal;
Line of rabbet joint antenna is made up of excitation region (13), radiation area (14) and transmission range (15);
Excitation region (13), radiation area (14) and transmission range (15) adopt poly-tetrafluoro (4) medium as support;
Main feeder (7) passes firm banking (6) and ground plate (5) is given line of rabbet joint antenna feed, the following radiating element (3) of line of rabbet joint antenna links together with the outer conductor (10) of feeder cable, the inner wire of feeder cable (9) links together with the last radiating element (1) of line of rabbet joint antenna, the inner wire of feeder cable (9) partly is connected with the index gradual change of the line of rabbet joint in parallel, outer conductor (10) partly is connected with rectigradation and locates at tie point (12), forms radiation area (14) and excitation region (13).
2. a kind of high-gain broadband omnidirectional antenna that is used for mobile communication according to claim 1 is characterized in that: described exposure, the equation of its exponential curve are y=± Ae
Px+ D, y are half of line of rabbet joint spacing, and A is a constant, and P is an amplification factor, and D is a deviation position, and can get D during design is zero.
3. a kind of high-gain broadband omnidirectional antenna that is used for mobile communication according to claim 1 is characterized in that: described rectigradation structure, and its rectigradation curve's equation is: y=kx+B, k is a proportionality coefficient, x is the length of radiating aperture, and B is the position parameter, can be set to zero.
4. a kind of high-gain broadband omnidirectional antenna that is used for mobile communication according to claim 1 and 2 is characterized in that: line of rabbet joint exponential fade profile can adopt multi-section circular arc match structure to form.
5. a kind of high-gain broadband omnidirectional antenna that is used for mobile communication according to claim 1 is characterized in that: go up radiating element (1), radiating element (3) and parasitic radiation unit (2) extension apparatus and the unit, crack of slotting that can adopt guide electromagnetic waves to propagate down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200910213030A CN101699658A (en) | 2009-11-05 | 2009-11-05 | High-gain broadband omnidirectional antenna used for mobile communication |
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| CN200910213030A CN101699658A (en) | 2009-11-05 | 2009-11-05 | High-gain broadband omnidirectional antenna used for mobile communication |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950855A (en) * | 2010-10-28 | 2011-01-19 | 江苏安特耐科技有限公司 | Slot type omnidirectional antenna with two copper sheets |
| CN102013563A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Three-copper sheet slot omnidirectional antenna |
| CN102013564A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Four-copper sheet slot type omnidirectional antenna |
| CN102013550A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Trough type omnidirectional antenna |
| CN104466384A (en) * | 2014-11-14 | 2015-03-25 | 河南省通信电缆有限公司 | Outdoor base station antenna |
| CN111009721A (en) * | 2019-11-22 | 2020-04-14 | 广东金龙东创智能装备有限公司 | Broadband antenna with symmetrical opening angle |
| CN112670698A (en) * | 2020-12-08 | 2021-04-16 | 南京长峰航天电子科技有限公司 | Metal Vivaldi antenna array |
| CN114447587A (en) * | 2020-10-30 | 2022-05-06 | 华为技术有限公司 | Antenna, antenna module and electronic equipment |
-
2009
- 2009-11-05 CN CN200910213030A patent/CN101699658A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950855A (en) * | 2010-10-28 | 2011-01-19 | 江苏安特耐科技有限公司 | Slot type omnidirectional antenna with two copper sheets |
| CN102013563A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Three-copper sheet slot omnidirectional antenna |
| CN102013564A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Four-copper sheet slot type omnidirectional antenna |
| CN102013550A (en) * | 2010-10-28 | 2011-04-13 | 江苏安特耐科技有限公司 | Trough type omnidirectional antenna |
| CN104466384A (en) * | 2014-11-14 | 2015-03-25 | 河南省通信电缆有限公司 | Outdoor base station antenna |
| CN111009721A (en) * | 2019-11-22 | 2020-04-14 | 广东金龙东创智能装备有限公司 | Broadband antenna with symmetrical opening angle |
| CN114447587A (en) * | 2020-10-30 | 2022-05-06 | 华为技术有限公司 | Antenna, antenna module and electronic equipment |
| CN114447587B (en) * | 2020-10-30 | 2022-12-27 | 华为技术有限公司 | Antenna, antenna module and electronic equipment |
| CN112670698A (en) * | 2020-12-08 | 2021-04-16 | 南京长峰航天电子科技有限公司 | Metal Vivaldi antenna array |
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Application publication date: 20100428 |