CN107275762A - A kind of micro-strip antenna array based on short-circuit needle construction - Google Patents
A kind of micro-strip antenna array based on short-circuit needle construction Download PDFInfo
- Publication number
- CN107275762A CN107275762A CN201710253913.8A CN201710253913A CN107275762A CN 107275762 A CN107275762 A CN 107275762A CN 201710253913 A CN201710253913 A CN 201710253913A CN 107275762 A CN107275762 A CN 107275762A
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- China
- Prior art keywords
- grade slab
- radiant panel
- micro
- antenna array
- short
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- 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
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
Abstract
The present invention relates to a kind of micro-strip antenna array based on short-circuit needle construction, including radiant panel, common grade slab, Shorted post and feeding network, the quantity of the radiant panel is at least 2 pieces, the at least 2 pieces radiant panels are arranged on the top of common grade slab, and every piece of radiant panel leaves the spacing filled for air dielectric between grade slab together；The one end of every piece of radiant panel respectively with the conductor needle of a coaxial feed is connected, and the other end of the conductor needle of coaxial feed is passed through to be total to after grade slab and is electrically connected with feeding network；Every piece of radiant panel is electrically connected with one end of one group of Shorted post respectively, and grade slab is electrically connected the other end of Shorted post together；The conductor needle of the coaxial feed is together without electrical connection between grade slab.
Description
Technical field
The present invention relates to wireless energy transfer field, more particularly, to a kind of microstrip antenna based on short-circuit needle construction
Array.
Background technology
Microwave energy transfer (MPT, Microwave Power Transmission) refers in microwave frequency band using wirelessly
Form realize the transmission of energy.The Dr.Peter Glaser of Arthur D.Little companies are initially proposed in remote districts
To unmanned plane (UAVs) power supply and the idea of space solar power (SSP), be thus born this concept of MPT.MPT technologies are first
First favored in terms of long range, high-power applications, the energy on such as SPS is transmitted as near space vehicle energy supply；Ground
Electrical energy transportation problem in the complex environments such as desert, isolated island, valley.In addition, MPT technologies are also shown in terms of low power applications
Tempting prospect.At present, MPT technologies are received more and more attention in the international, country.
The effect of MPT microwave transmitting antennas is that the RF energy for producing microwave transmitter is transmitted into free space.It is micro-
Ripple reception antenna is one of receiving unit of microwave wireless energy output system, is the energy front end of receiving rectification antenna, is realized to penetrating
The reception of frequency energy.One of core as MPT systems, microstrip antenna is all MPT technical field of research all the time
One big focus.
But because traditional microstrip antenna narrow bandwidth, gain are small, the low defect of radiation efficiency so that it is in many applications
It is restricted in occasion.
The content of the invention
The small defect of microstrip antenna gain of the present invention to solve above prior art is based on Shorted post knot there is provided one kind
The micro-strip antenna array of structure, gain of the short-circuit needle construction to micro-strip antenna array is strengthened.
To realize above goal of the invention, the technical scheme of use is：
A kind of micro-strip antenna array based on short-circuit needle construction, including radiant panel, common grade slab, Shorted post and transmission network
Network, the quantity of the radiant panel is at least 2 pieces, and at least 2 pieces radiant panels are arranged on the top of common grade slab, every block of spoke
Penetrate plate and leave the spacing filled for air dielectric between grade slab together；Every piece of radiant panel respectively with a coaxial feed
One end connection of conductor needle, the other end of the conductor needle of coaxial feed is passed through to be total to after grade slab and is electrically connected with feeding network；Institute
State the one end of every piece of radiant panel respectively with one group of Shorted post to be electrically connected, grade slab is electrically connected the other end of Shorted post together；
The conductor needle of the coaxial feed is together without electrical connection between grade slab.
Further, the aerial array also includes SMA heads, the probes of the SMA heads of coaxial feed and feeding network
Input is electrically connected.
In such scheme, the aerial array that the present invention is provided disturbs the CURRENT DISTRIBUTION on radiant panel using Shorted post, realizes
The gain suppression of aerial array.
In such scheme, the radiating surface of radiant panel is as radiating element, and grade slab is used as ground level altogether.Feeding network is used
The cascade form of Wilkinson power dividers, it is ensured that the amplitude of each radiating element is consistent with phase.Radiating element and transmission network
Enter row energization using conductor needle between network.Microwave energy is inputted by the SMA heads of coaxial feed, and energy point is carried out by feeding network
Match somebody with somebody, then via conductor needle excitation radiation unit, by microwave energy into free space.
Preferably, the feeding network is arranged on the bottom surface of common grade slab, and the feeding network is together between grade slab
Without electrical connection.
Preferably, one group of Shorted post being connected with every piece of radiant panel includes four Shorted posts, four Shorted posts
Two ends respectively together grade slab, radiant panel connection.
Preferably, the radiant panel includes copper clad layers and dielectric layer, and the bottom surface of copper clad layers is fitted with the top surface of dielectric layer；Institute
Stating common grade slab includes copper clad layers and dielectric layer, and the bottom surface of copper clad layers is fitted with the top surface of dielectric layer；Feeding network passes through coaxial
The conductor needle of feed sequentially passes through the dielectric layer of common grade slab, is total to after the copper clad layers of grade slab, the dielectric layer of radiant panel and radiation
The copper clad layers electrical connection of plate；The feeding network is arranged on the bottom surface of common grade slab.The copper clad layers of grade slab are used as ground altogether
Plane, feeding network is located at the lower surface of grade slab altogether, and the copper clad layers of radiant panel are used as radiating element.It is spaced between two copper clad layers
Dielectric layer and air-gap, thus, the relative dielectric constant between two copper clad layers is reduced, and is conducive to suppressing stray wave between each element
Mutual coupling crosstalk, reduce aerial array cross polarization, improve aerial array gain.
Preferably, the copper clad layers electrical connection of one end of Shorted post grade slab together, the other end of Shorted post passes through
Copper clad layers after the dielectric layer of radiant panel with radiant panel are electrically connected.
Preferably, the radiant panel uses polytetrafluoroethylene (PTFE) single-side coated copper plate, and grade slab is double using polytetrafluoroethylene (PTFE) altogether
Face copper-clad plate, described Shorted post is cylinder type metal conductor, and the feeding network utilizes the copper clad layers system of grade slab bottom surface altogether
Into.
Preferably, the horizontal section of the radiant panel is rounded, and the horizontal section of the grade slab altogether is square.
Compared with prior art, the beneficial effects of the invention are as follows：
1) micro-strip antenna array that the present invention is provided, high gain, good directionality；Operating distance is remote, penetration capacity is strong；It is anti-dry
Disturb ability strong.
2) micro-strip antenna array that the present invention is provided, radiation efficiency is high so that the microwave energy of transmitting (reception) is filled
Divide and utilize.
3) micro-strip antenna array that the present invention is provided, disturbs the CURRENT DISTRIBUTION on radiant panel by Shorted post, realizes day
The gain suppression of linear array, compared with the traditional antenna of same type, gain improves 50% or so.
4) micro-strip antenna array that the present invention is provided, using air blending agent structure, has effectively widened aerial array
Frequency bandwidth.Meanwhile, be conducive to the crosstalk of stray wave between suppression each element, reduce the cross polarization of aerial array, improve antenna
The gain of array.In addition, grade slab can effectively improve the front and rear ratio of aerial array as reflecting surface altogether.
5) micro-strip antenna array that the present invention is provided, feeding network is located at the opposite side of grade slab altogether, shared with radiant panel
One section, advantageously forms greater compactness of design.
Brief description of the drawings
Fig. 1 is the horizontal section schematic diagram of micro-strip antenna array.
Fig. 2 is the longitudinal profile schematic diagram of micro-strip antenna array.
Fig. 3 is the optimum reflection charts for finned heat that microstrip antenna array is listed in different frequency range.
Fig. 4 is the directive gain curve map that microstrip antenna array is listed in xoz, yoz face.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；
Below in conjunction with drawings and examples, the present invention is further elaborated.
Embodiment 1
As shown in Figure 1, 2, the micro-strip antenna array based on short-circuit needle construction includes four pieces of radiant panels 1, altogether grade slab
2nd, the SMA of feeding network 3, Shorted post 4 and coaxial feed first 5, wherein four pieces of radiant panels 11,12,13,14 are arranged on common grade slab
2 top, leaves spacing as air-gap 6 altogether between grade slab 2 and radiant panel 1, every piece of radiant panel 1 respectively with coaxial feed
Conductor needle 7 one end connection, the other end of the conductor needle 7 of coaxial feed electrically connects after passing through grade slab altogether with feeding network 3
Connect.Every piece of radiant panel 1 is electrically connected with one end of one group of Shorted post 4 respectively, the other end of Shorted post 4 grade slab 2 together
Electrical connection.The conductor needle 7 of the coaxial feed is together without electrical connection between grade slab 2.
Wherein, the horizontal section of four pieces of radiant panels 11,12,13,14 is rounded, and its radius is 18.15mm, radiation
The thickness of plate 1 is 0.3mm；It is described altogether grade slab 2 horizontal section it is square, its size range be 85mm × 85mm extremely
95mm × 95mm, the thickness of grade slab 2 is 0.8mm altogether.Permittivity ε=2.2 of the radiant panel 1, dielectric loss angle tangent
Tan δ=0.0009；Permittivity ε=2.55 of the grade slab 2 altogether, dielectric loss angle tangent tan δ=0.0014.Shorted post
4 is equal in magnitude, is cylinder type metal conductor, the circular radius of horizontal section is 0.5mm.The two ends of Shorted post 4 respectively with radiation
Plate 1, altogether grade slab 2 are connected.
In such scheme, the radiating surface of four pieces of upper surfaces of radiant panel 11,12,13,14 is as radiating element, common grade slab 2
Upper surface be used as ground level, feeding network 3 be located at altogether grade slab 2 lower surface.Feeding network 3 uses Wilkinson power
The cascade form of distributor, it is ensured that the amplitude and phase of each radiating element.Led between radiating element and feeding network 3 using four
Body acupuncture 7 enters row energization.Microwave energy carries out energy distribution and impedance by first 5 inputs of SMA of coaxial feed by feeding network
Match somebody with somebody, then via four excitation radiation units of conductor needle 7, by microwave energy into free space.
The micro-strip antenna array that the present invention is provided uses air-gap 6 and the structure of Shorted post 4, and radiant panel is disturbed by Shorted post
On CURRENT DISTRIBUTION, realize the gain suppression of aerial array, compared with the traditional antenna of same type, it is left that gain improves 50%
It is right.Using air blending agent structure, the frequency bandwidth of aerial array has effectively been widened.Meanwhile, be conducive to suppress each element between
The crosstalk of stray wave, reduces the cross polarization of aerial array, improves the gain of aerial array.In addition, grade slab is used as reflection altogether
Face, can effectively improve the front and rear ratio of aerial array.It is demonstrated experimentally that the micro-strip antenna array that the present invention is provided has when in use
The advantage that bandwidth is good, high gain, radiation efficiency height, good directionality, size are small, it is adaptable to all kinds of wireless communications application fields.
In the present embodiment, as shown in Fig. 2 four pieces of radiant panels 11,12,13,14 include copper clad layers and dielectric layer, cover
The bottom surface of layers of copper is fitted with the top surface of dielectric layer, and copper clad layers are as the radiating surface of antenna, and dielectric layer provides necessary for radiating surface
Rigidity；The grade slab 2 altogether includes copper clad layers and dielectric layer, and the bottom surface of copper clad layers is fitted with the top surface of dielectric layer；It is described every piece
The copper clad layers of radiant panel 1 are electrically connected with one end of one group of Shorted post 4 respectively, and the other end of Shorted post 4 passes through Jie of radiant panel 1
After matter layer, the copper clad layers electrical connection of grade slab 2 together；CURRENT DISTRIBUTION on radiant panel 1 is disturbed by Shorted post 4, realized
The gain suppression of aerial array.The feeding network 3 is arranged on the bottom surface of common grade slab 2, altogether the feeding network 3 of grade slab 2
By sequentially passing through the dielectric layer of common grade slab 2, being total to after the copper clad layers of grade slab 2, the dielectric layer of radiant panel 1 and four pieces of radiant panels
1 copper clad layers are connected respectively；The conductor needle 7 of the coaxial feed is together without electrical connection between grade slab 2.Common grade slab
2 copper clad layers are as ground level, and feeding network 3 is located at the lower surface of grade slab 2 altogether, and the copper clad layers of radiant panel 1 are single as radiation
Member.It is relative between two copper clad layers using air blending agent structure across dielectric layer and air-gap 6 between two copper clad layers
Dielectric constant is reduced, and has effectively widened the frequency bandwidth of aerial array；Meanwhile, be conducive to the mutual coupling of stray wave between suppression each element
Crosstalk, reduces the cross polarization of aerial array, improves the gain of aerial array.In the present embodiment, four pieces of radiant panels 1 are adopted
Polytetrafluoroethylene (PTFE) single-side coated copper plate is used, grade slab 2 uses polytetrafluoroethylene (PTFE) double face copper altogether, and the feeding network 3 is using altogether
The copper clad layers of grade slab bottom surface are made, and described Shorted post 4 is cylinder type metal conductor.
Embodiment 2
The micro-strip antenna array that the present embodiment is provided embodiment 1 has carried out specific experiment, its experimental result such as Fig. 3,4
It is shown.
As shown in figure 3, the microstrip antenna that embodiment 1 is provided has optimum reflection coefficient S in resonant frequency 5.8GHz11=-
32.8dB。
As shown in figure 4, gain G ain=15.0dB of the microstrip antenna of the offer of embodiment 1 in resonant frequency 5.8GHz.
From above-mentioned experimental result, the present invention provide the characteristics of there is high-gain.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Any modifications, equivalent substitutions and improvements made within the spirit and principle of invention etc., should be included in the claims in the present invention
Protection domain within.
Claims (8)
1. a kind of micro-strip antenna array based on short-circuit needle construction, it is characterised in that：Including radiant panel, common grade slab, Shorted post
And feeding network, the quantity of the radiant panel is at least 2 pieces, and at least 2 pieces radiant panels are arranged on the top of common grade slab, institute
State every piece of radiant panel and leave the spacing filled for air dielectric between grade slab together；Every piece of radiant panel respectively with together
One end connection of the conductor needle of axle feed, the other end of the conductor needle of coaxial feed is electric with feeding network after grade slab through being total to
Connection；Every piece of radiant panel is electrically connected with one end of one group of Shorted post respectively, and grade slab is electric together for the other end of Shorted post
Gas is connected；The conductor needle of the coaxial feed is together without electrical connection between grade slab.
2. the micro-strip antenna array according to claim 1 based on short-circuit needle construction, it is characterised in that：The feeding network
On the bottom surface for being arranged on common grade slab, the feeding network is together without electrical connection between grade slab.
3. the micro-strip antenna array according to claim 1 based on short-circuit needle construction, it is characterised in that：The aerial array
Also include SMA heads, the probe of the SMA heads of coaxial feed and the input of feeding network are electrically connected.
4. the micro-strip antenna array according to claim 1 based on short-circuit needle construction, it is characterised in that：Described and every block of spoke
Penetrating one group of Shorted post of plate connection includes four Shorted posts, and grade slab, radiant panel together are distinguished in the two ends of four Shorted posts
Connection.
5. the micro-strip antenna array according to claim 1 based on short-circuit needle construction, it is characterised in that：The radiant panel bag
Copper clad layers and dielectric layer are included, the bottom surface of copper clad layers is fitted with the top surface of dielectric layer；The grade slab altogether includes copper clad layers and medium
Layer, the bottom surface of copper clad layers is fitted with the top surface of dielectric layer；Feeding network sequentially passes through common ground by the conductor needle of coaxial feed
Copper clad layers after the dielectric layer of plate, the altogether copper clad layers of grade slab, the dielectric layer of radiant panel with radiant panel are electrically connected；The feed
Network settings are on the bottom surface of common grade slab.
6. the micro-strip antenna array according to claim 5 based on short-circuit needle construction, it is characterised in that：The Shorted post
The copper clad layers electrical connection of one end grade slab together, the other end of Shorted post with radiant panel through covering after the dielectric layer of radiant panel
Layers of copper is electrically connected.
7. the micro-strip antenna array according to claim 5 based on short-circuit needle construction, it is characterised in that：The radiant panel is equal
Using polytetrafluoroethylene (PTFE) single-side coated copper plate, grade slab uses polytetrafluoroethylene (PTFE) double face copper altogether, and described Shorted post is cylinder
Type metallic conductor, the feeding network is made using the copper clad layers of grade slab bottom surface altogether.
8. the micro-strip antenna array according to claim 5 based on short-circuit needle construction, it is characterised in that：The radiant panel
Horizontal section is rounded, and the horizontal section of the grade slab altogether is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253913.8A CN107275762A (en) | 2017-04-18 | 2017-04-18 | A kind of micro-strip antenna array based on short-circuit needle construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710253913.8A CN107275762A (en) | 2017-04-18 | 2017-04-18 | A kind of micro-strip antenna array based on short-circuit needle construction |
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| Publication Number | Publication Date |
|---|---|
| CN107275762A true CN107275762A (en) | 2017-10-20 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710253913.8A Pending CN107275762A (en) | 2017-04-18 | 2017-04-18 | A kind of micro-strip antenna array based on short-circuit needle construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808230A (en) * | 2018-05-03 | 2018-11-13 | 佛山市顺德区中山大学研究院 | A kind of high-gain microstrip antenna with Shorted post |
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Application publication date: 20171020 |