CN108717993A - A kind of wide band high-gain omnidirectional antenna based on integrated design - Google Patents
A kind of wide band high-gain omnidirectional antenna based on integrated design Download PDFInfo
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- CN108717993A CN108717993A CN201810343947.0A CN201810343947A CN108717993A CN 108717993 A CN108717993 A CN 108717993A CN 201810343947 A CN201810343947 A CN 201810343947A CN 108717993 A CN108717993 A CN 108717993A
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- antenna
- wide band
- feeding network
- integrated design
- gain
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Classifications
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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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
- H01Q21/0075—Stripline fed arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
- Details Of Aerials (AREA)
Abstract
The invention belongs to the structure type technical fields of radiating element, disclose a kind of wide band high-gain omnidirectional antenna based on integrated design, including antenna radiator, integrated feeding network and reflector three parts.Printed dipole radiating element forms array printing per four, face dipole radiating element reversed arrangement successively spaced apart in the side of dielectric-slab, realizes the high-gain energy radiation of antenna；The parallelly feeding network and wideband balun integrated design of integrated feeding network, dipole array and feeding network common ground connection, realize the broadband operation and compact structure of antenna；Antenna reflector is made of two identical metallic reflection columns, and two metallic reflection intercolumniations are symmetrically distributed in antenna body both sides every same distance, improve antenna out-of-roundness, realize the omnidirectional radiation of antenna.The present invention has the advantages that simple in structure and lateral dimension is small under the premise of ensureing broadband, the work of high-gain omnidirectional.
Description
Technical field
The invention belongs to the structure type technical field of radiating element more particularly to a kind of broadbands based on integrated design
High-gain omni-directional antenna.
Background technology
Currently, the prior art commonly used in the trade is such：Rapid development with human society science and technology and society
The lasting promotion of the level of economic development, mobile radio also become increasingly popular, the broadband bandwidth to antenna of communication system
Higher requirements are also raised, results in the appearance in various broadbands, ultra-wideband antenna.Meanwhile the working environment of antenna system is got over
Come more complicated, in order to ensure communication quality, the antenna for mobile communication mainly needs to meet following application conditions：Using frequency band
Width, high-gain, small, good omnidirectional radiation characteristic.Omnidirectional antenna refers to that 360 ° of homogeneous radiations may be implemented in horizontal plane,
Antenna with certain beam angle in vertical plane.The signal of omni-directional antenna transmission can be by the receiving terminal of horizontal plane arbitrary orientation
It receives, while also can receive the signal from horizontal plane all directions.In general, the antenna of omnidirectional radiation characteristic is by vibrator type omnidirectional
Antenna element is constituted, such as monopole, symmetrical dipole, printed dipole and biconical antenna, but the major defect of this kind of antenna
It is that gain is relatively low.In order to ensure communication quality, generally requires the gain of antenna relatively high, to realize high-gain, it is necessary to make
It is realized with longitudinal array.The feeding classification of aerial array is divided into parallelly feeding and series feed.Common series feed array
Working band is relatively narrow, suitable for the environment of less demanding to working band.Parallelly feeding can guarantee each in different operating frequency
The amplitude and phase of element excitation energy are equal, and stable directional diagram can be obtained within working band, wideband may be implemented
Band work.But parallelly feeding array generally requires complicated power division network so that larger and horizontal plane out-of-roundness
It is poor.A kind of wideband omnidirectional array antenna, to use planographic dipole triads at array, in the two sides fate of dielectric-slab
Parasitic dipoles are not introduced, while a vertical metal covering oscillator is in addition introduced in each initial plane doublet unit
Arm, so that the beamwidth of antenna increases.The operating frequency of antenna is 1.62-2.75GHz, and relative bandwidth 51.7% is maximum
Gain is 7dB.But the antenna lateral dimension is larger, about 0.83 medium wavelength；And due to introducing multiple vertical dipoles,
So that antenna structure becomes complex, overall weight increases, inconvenience processing；In bandwidth of operation, the antenna horizontal plane is non-round
Degree is 2.3-3.5dB, this shows the antenna, and energy radiation is not uniform enough in the horizontal plane, and omnidirectional's performance has the sky further increased
Between.Usually require that the signal of aerial radiation in horizontal plane is omnidirectional's covering in mobile communication system, out-of-roundness generally requires
Less than 3dB, solve the problems, such as that this may make antenna to be radiated in 360 ° of horizontal plane more uniformly, to contribute to mobile communication system
The promotion of communication quality.
In conclusion problem of the existing technology is：
(1) multiple vertical dipoles are introduced so that antenna structure becomes complex, and overall weight increases, inconvenience processing.
(2) the antenna lateral dimension is larger, about 0.83 medium wavelength.
(3) in bandwidth of operation, which is 2.3-3.5dB, cannot meet mobile communication system pair
In the requirement of omnidirectional's performance.
Solve the difficulty and meaning of above-mentioned technical problem：
The difficult point that solves the above problems and key are：
1) radiating element for reducing antenna makes antenna weights mitigate same in the case where not introducing parasitic vertical oscillator
When out-of-roundness performance get a promotion.
2) while ensureing the electrical properties such as the beamwidth of antenna and gain, pass through the conjunction of antenna radiation unit and its feed structure
Removing the work office so that antenna structure is compacter.
In mobile communication system, wide band high-gain antenna is very universal, but existing wide band high-gain antenna is general
The structure of array antenna is all used, size is larger, while omnidirectional's performance also has very big room for promotion.Therefore design one kind can expire
Foot straps are wide and gain requirement, and out-of-roundness can be made to significantly reduce, while antenna size being made to reduce, the relatively simple miniaturization of structure
Wideband omnidirectional antenna becomes a kind of active demand.
Invention content
In view of the problems of the existing technology, the present invention provides a kind of wide band high-gain omnidirectional based on integrated design
Antenna.
The invention is realized in this way a kind of wide band high-gain omnidirectional antenna based on integrated design, described to be based on one
Bodyization design wide band high-gain omnidirectional antenna include：Antenna radiator, integrated feeding network, reflector；
The antenna radiator is by being printed on the printed dipole radiating elements of four same sizes on dielectric-slab two sides
Composition；
The integration feeding network is by wideband balun, one point of four parallelly feeding network, array-fed port and floor collection
At together；Wideband balun and one point of four parallelly feeding system integrating feed；The array-fed port is located at one point of four parallel connection
Feeding network center；
The reflector is made of two identical reflection pillars；Two reflection pillar interval same distances are symmetrically distributed in antenna
Radiator both sides.
Such design through the invention, can make antenna while ensureing bandwidth of operation and gain, out-of-roundness
It can get a promotion, while antenna lateral dimension reduces, structure is compacter.A kind of wideband omnidirectional array antenna, bandwidth are
51.7%, out-of-roundness is 2.3-3.5dB in frequency band, and gain is less than 7dB, and antenna lateral dimension is 0.83 medium wavelength；And this
It invents described one kind and being based on integrated wide band high-gain omnidirectional antenna, bandwidth 52%, out-of-roundness is less than in Whole frequency band
1.5dB, gain are more than 7dB, and antenna lateral dimension is only 0.7 medium wavelength.
Further, on dielectric-slab printed dipole radiating element other side corresponding position, print an equal amount of idol
Extremely sub- radiating element, and printed on both sides structure is connected by metal pin.It is such to design the equivalent overstriking diameter of oscillator, from
And the bandwidth of operation of antenna has been broadened, the relative bandwidth that is printed on one side is 47%, printed on both sides 52%.
Further, reversed arrangement forms dipole array successively at four printed dipole radiating element intervals.Make antenna
There is higher gain in working band, Whole frequency band gain is in 7dB or more.
Further, the printed dipole subarray is by symmetrical one point of four parallelly feeding network feeder so that printed dipole
Radiating element obtains excitation of the constant amplitude with phase.Divide four parallelly feeding networks collection integrated with wideband balun using printed dipole one
At the ground of feeding network and the floor of dipole array share so that antenna structure is compact, and lateral dimension is only 0.7 medium
Wavelength achievees the purpose that miniaturization.
Further, reflection pillar is the cylinder of metal material, length 600mm, a diameter of 2mm, with antenna body place
Dielectric-slab between apart from antenna be 39mm.Metallic reflection column can compress directional diagram so that reach uniform in the horizontal plane
The effect of radiation.When areflexia column, the out-of-roundness of antenna is more than 4dB, in addition after reflection pillar, Whole frequency band out-of-roundness is small in horizontal plane
In 1.5dB.
Another object of the present invention is to provide the wide band high-gain omnidirectional antennas based on integrated design described in a kind of application
The mobile communication system of line.
In conclusion advantages of the present invention and good effect are：By being formed directly to printed dipole interval reversed arrangement
Linear array is simultaneously presented with constant amplitude with the excitation of phase, realizes antenna in the equal-sized high-gain energy radiation of A, B both direction；It uses
Plural parallel stage feeding network and microstrip balun can convert antenna feed impedance, broaden the bandwidth of operation of antenna significantly；
Printed on both sides oscillator is used in dielectric-slab both sides, realizes the further broadening of the beamwidth of antenna；Respectively add one in two direction C, D respectively
Chaff makes directional diagram be compressed in two direction C, D, to enhance the radiation in two direction A, B.Reflector is adjusted from oscillator
Distance and reflector length, keep the radiation of A, B, C, D four direction substantially uniform, out-of-roundness index made to reach requirement.It is right
Microstrip feed network has carried out integrated design with antenna, and the ground connection on the ground and array that make microstrip feed network shares, transmission network
Network and wideband balun are integrated, constitute a compact-sized antenna system.
Description of the drawings
Fig. 1 is that the overall structure of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design is shown
It is intended to；
In figure：(a) front view；(b) vertical view；
Fig. 2 is the dipole radiation of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design
Unit and barron structure figure；
Fig. 3 is the feeding network knot of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design
Composition；
Fig. 4 be the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design feeding network and
Balun integral structure figure；
Fig. 5 is the voltage standing wave ratio of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design
Curve synoptic diagram；
Fig. 6 is the surface radiation sides E of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design
Xiang Tu；
Fig. 7 is the surface radiation sides H of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design
Xiang Tu；
Fig. 8 is that the gain curve of the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design shows
It is intended to；
In figure：1, printed dipole radiating element；2, dielectric-slab；3, wideband balun；4, parallelly feeding network；5, array is presented
Electric port；6, reflection pillar；7, floor；8, metal pin.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention selects wide-band printing symmetrical dipole structure as radiating element, composition quaternary longitudinal direction array, printed dipole
Subarray and feeding network divide row dielectric-slab both sides.Antenna feeding network and printed dipole feed wideband balun are integrated, micro-
The ground connection on ground and array with feeding network shares, and constitutes a compact-sized feed system.The antenna performance developed
It is excellent, at low cost, light-weight, it can be achieved that Fast Installation, improves integrally-built reliability.
As shown in Figure 1, the wide band high-gain omnidirectional antenna provided in an embodiment of the present invention based on integrated design includes：Print
Brush dipole radiating element 1, dielectric-slab 2, wideband balun 3, parallelly feeding network 4, array-fed port 5, reflection pillar 6, floor
7, metal pin 8.
Printed dipole radiating element 1 applies the form of copper printing using dielectric-slab 2, and is presented using microstrip broadband balun
Electricity, this structure have wider impedance bandwidth.Dielectric-slab uses polytetrafluoroethylene material, thickness 1mm, dielectric constant
2.65, dielectric-slab width 80mm, about 0.7 medium wavelength.
As shown in Fig. 2, printed dipole brachium a is about 1/2 wavelength, it is computed and is taken as 94mm, width b=18mm shakes
Sub- arm is from common land distance L0=36mm.Slot length s=54mm between two oscillator arms, width W0 are 1mm；Wideband balun 3,
Its total line length for opening a way section is generally chosen for a quarter medium wavelength length, optimized calculating final lengths L1=38.5mm,
Line width W1=1.87mm；Feed the length L2=27.3mm. line widths W2=2.7mm of section.
Four identical printed dipole radiating elements 1 successively reversed arrangement composition dipole line array is printed on medium
On plate (2), spacing is generally taken as a medium wavelength between dipole radiating element, is computed and simulation optimization, final spacing
It is taken as 140mm.
Add two-sided oscillator, i.e., the other side corresponding position of each printed dipole radiating element 1 on dielectric-slab 2, printing
The dipole radiating element of onesize specification, it is two-sided to connect using metal pin 8 is inserted into dipole radiating element via
Print structure can further widen impedance bandwidth, a diameter of 2.2mm of metal pin 8.
Swashed with phase with constant amplitude as shown in figure 3, being presented printed dipole radiating curtain using one point of four parallelly feeding network 4
It encourages, ensure that antenna in the stability of broadband self-energy radiation direction, makes antenna that can obtain high-gain in certain space
Directional radiation properties.One point of four parallelly feeding network 4, feed input section impedance should be 50 ohm, and it is W3=to be computed line width
2.7mm；Transformer section impedance should be 70.7 ohm, and it is W4=1.5mm, line length L3=32mm to be computed line width.Array is presented
Electric port 5 is located at the center of entire feeding network.
Parallelly feeding network 4 and wideband balun 3 are subjected to integrated design, by the floor 7 of feeding network and dipole
The floor 7 of subarray shares so that antenna structure is compact, has achieved the purpose that miniaturization.
The present invention is to realize the homogeneous radiation of horizontal full spatial domain energy, identical as adding two above feeder line face in oscillator surface
Metallic reflection column 6, metallic reflection column 6 be parallel to dipole array orientation placement.This behave is solving directional diagram
It is a key breakthrough technology in out-of-roundness.Metallic reflection column 6, using two identical copper posts, length 600mm is a diameter of
The distance between dielectric-slab where 2mm, with antenna body is 39mm.
The application effect of the present invention is explained in detail with reference to emulation.
Antenna model is emulated using simulation software HFSS13.0, then carries out processing and test in kind.Fig. 5 gives
The test result of the voltage standing wave ratio of antenna is gone out.As shown in the figure, the results showed that, the working band of antenna model VSWR≤2 is
1.15-1.95GHz, relative bandwidth 52% can meet the requirement of wideband omnidirectional communication system.
Fig. 6 and Fig. 7 is the E-plane and H-plane pattern obtained to antenna measurement respectively.Directional diagram characterizes working band internal antenna
Energy distribution in space.Fig. 6 shows that the faces the E major lobe of directional diagram of antenna is that horizontal plane, table are directed toward in the figure of eight, maximum direction
The energy of line will be concentrated mainly on horizontal plane tomorrow.Out-of-roundness of the inventive antenna in working band is can be seen that from Fig. 7 results
Less than 1.5dB, show that the energy of inventive antenna radiation is more uniformly distributed in horizontal plane, i.e., all has in working band good
Good omni-directional can preferably meet directional communication requirement.
Fig. 8 is the curve that the gain obtained to embodiment antenna measurement changes with working frequency.From figure 8, it is seen that this
Invention antenna has higher gain in working band, and Whole frequency band gain is in 7dB or more.
Wide band high-gain omnidirectional antenna proposed by the present invention based on integrated design has good electrical performance indexes, full
The basic demand of sufficient high-gain, broadband operation, while antenna has preferable omnidirectional radiation characteristic, preferably meets broadband height
The requirement of gain total access communication system.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (6)
1. a kind of wide band high-gain omnidirectional antenna based on integrated design, which is characterized in that described based on integrated design
Wide band high-gain omnidirectional antenna includes：Antenna radiator, integrated feeding network, reflector；
The antenna radiator is made of the printed dipole radiating element for four same sizes being printed on dielectric-slab two sides；
The integration feeding network is integrated in by wideband balun, one point of four parallelly feeding network, array-fed port and floor
Together；Wideband balun and one point of four parallelly feeding system integrating feed；The array-fed port is located at one point of four parallelly feeding
Network center position；
The reflector is made of two identical reflection pillars；Two reflection pillar interval same distances are symmetrically distributed in aerial radiation
Body both sides.
2. the wide band high-gain omnidirectional antenna based on integrated design as described in claim 1, which is characterized in that in dielectric-slab
The other side corresponding position of upper printed dipole radiating element, prints an equal amount of dipole radiating element, and pass through metal
Pin connects printed on both sides structure.
3. the wide band high-gain omnidirectional antenna based on integrated design as claimed in claim 2, which is characterized in that four printings
Reversed arrangement forms dipole array successively at dipole radiating element interval.
4. the wide band high-gain omnidirectional antenna based on integrated design as described in claim 1, which is characterized in that the printing
Dipole array divides four parallelly feeding networks and broadband by symmetrical one point of four parallelly feeding network feeder, using printed dipole one
Balun is integrated, and the ground of feeding network and the floor of dipole array share.
5. the wide band high-gain omnidirectional antenna based on integrated design as claimed in claim 4, which is characterized in that reflection pillar is
The cylinder of metal material, length 600mm are apart from antenna between a diameter of 2mm, with the dielectric-slab where antenna body
39mm。
6. a kind of shifting using the wide band high-gain omnidirectional antenna based on integrated design described in Claims 1 to 5 any one
Dynamic communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343947.0A CN108717993A (en) | 2018-04-17 | 2018-04-17 | A kind of wide band high-gain omnidirectional antenna based on integrated design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343947.0A CN108717993A (en) | 2018-04-17 | 2018-04-17 | A kind of wide band high-gain omnidirectional antenna based on integrated design |
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| Publication Number | Publication Date |
|---|---|
| CN108717993A true CN108717993A (en) | 2018-10-30 |
Family
ID=63899091
Family Applications (1)
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|---|---|---|---|
| CN201810343947.0A Pending CN108717993A (en) | 2018-04-17 | 2018-04-17 | A kind of wide band high-gain omnidirectional antenna based on integrated design |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668599A (en) * | 2020-06-16 | 2020-09-15 | 陕西烽火诺信科技有限公司 | High-power high-gain omnidirectional shaped antenna |
| CN112993575A (en) * | 2021-02-07 | 2021-06-18 | 深圳市南斗星科技有限公司 | WiFi omnidirectional antenna |
| CN113300101A (en) * | 2021-07-01 | 2021-08-24 | 昆明理工大学 | Electromagnetic dipole complementary end-fire antenna with high front-to-back ratio |
| CN113629385A (en) * | 2021-07-09 | 2021-11-09 | 南京步微通信设备有限公司 | Antenna unit, array antenna and water flow velocity measurement radar |
| CN114899619A (en) * | 2022-06-10 | 2022-08-12 | 西安电子科技大学 | Broadband omnidirectional high-gain antenna array |
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| CN105742827A (en) * | 2016-02-24 | 2016-07-06 | 常熟市讯雷通讯科技有限公司 | Corner reflector based wideband high-gain omnidirectional antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111668599A (en) * | 2020-06-16 | 2020-09-15 | 陕西烽火诺信科技有限公司 | High-power high-gain omnidirectional shaped antenna |
| CN112993575A (en) * | 2021-02-07 | 2021-06-18 | 深圳市南斗星科技有限公司 | WiFi omnidirectional antenna |
| CN112993575B (en) * | 2021-02-07 | 2024-04-09 | 深圳市南斗星科技有限公司 | WiFi omnidirectional antenna |
| CN113300101A (en) * | 2021-07-01 | 2021-08-24 | 昆明理工大学 | Electromagnetic dipole complementary end-fire antenna with high front-to-back ratio |
| CN113629385A (en) * | 2021-07-09 | 2021-11-09 | 南京步微通信设备有限公司 | Antenna unit, array antenna and water flow velocity measurement radar |
| CN113629385B (en) * | 2021-07-09 | 2023-10-13 | 南京步微通信设备有限公司 | Antenna unit, array antenna and water flow speed measuring radar |
| CN114899619A (en) * | 2022-06-10 | 2022-08-12 | 西安电子科技大学 | Broadband omnidirectional high-gain antenna array |
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Application publication date: 20181030 |