CN106208405A - A kind of electromagnetic energy grabber - Google Patents
A kind of electromagnetic energy grabber Download PDFInfo
- Publication number
- CN106208405A CN106208405A CN201610814321.4A CN201610814321A CN106208405A CN 106208405 A CN106208405 A CN 106208405A CN 201610814321 A CN201610814321 A CN 201610814321A CN 106208405 A CN106208405 A CN 106208405A
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- linear polarization
- copper base
- electromagnetic wave
- wave absorption
- absorption structure
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Abstract
The present invention provides a kind of electromagnetic energy grabber, described electromagnetic energy grabber includes the linear polarization electromagnetic wave absorption structure of integrated copper base and radio frequency substrate, feeding network and predetermined number, wherein, the linear polarization electromagnetic wave absorption structure distribution of described predetermined number is on described copper base, described feeding network is engraved on described radio frequency base plate bottom, and described copper base is connected by matched load with described feeding network；The surface current that each described linear polarization electromagnetic wave absorption structure produces is derived to described feeding network by the through hole being opened on copper base, and described feeding network includes the linear polarization electromagnetic wave absorption structure feed element one to one with described predetermined number.A kind of electromagnetic energy grabber that the present invention provides, it is possible to the efficiency that high-energy gathers.
Description
Technical field
The present invention relates to electromagnetism field, particularly relate to a kind of electromagnetic energy grabber.
Background technology
In recent years, space solar transmission (Solar Power Transmission, SPT) and microwave wireless delivery of energy
(WPT) being increasingly subject to people's attention, electromagnetic energy collection is one of which key technology.At present, electromagnetism in wireless power transfer
The collection of energy is mainly completed by the form of antenna, and harvester mainly has Monopole antenna, planographic dipole sky
Line and 3 kinds of forms of microstrip antenna.Volume is little, lightweight, receiving area is big, polarization mode is flexible, side because it has for microstrip antenna
Just organize the advantages such as battle array, easy of integration and easy processing, be widely used in the design of reception antenna in RECTIFYING ANTENNA in recent years.But pass through sky
The mode of line collecting energy, collecting efficiency is the highest, and whole efficiency is less than 50%.
Summary of the invention
It is an object of the invention to provide a kind of electromagnetic energy grabber, to improve the efficiency of energy acquisition.
For achieving the above object, the invention provides a kind of electromagnetic energy grabber, described electromagnetic energy grabber includes
The linear polarization electromagnetic wave absorption structure of integrated copper base and radio frequency substrate, feeding network and predetermined number, wherein, described
The linear polarization electromagnetic wave absorption structure distribution of predetermined number is on described copper base, and described feeding network is engraved on described radio frequency substrate base
Portion, described copper base is connected by matched load with described feeding network；Each described linear polarization electromagnetic wave absorption structure is by bending
Copper conductor constitute, described copper conductor includes integrated first paragraph, second segment and the 3rd section, wherein, described second segment
Head and the tail be connected described first paragraph and described 3rd section respectively, described first paragraph and described 3rd section of all upper with described copper base
Surface is vertical, and described second segment is parallel with the upper surface of described copper base, and the length of described first paragraph is more than described 3rd section
Length, described first paragraph runs through the through hole being opened on described copper base, described linear polarization electromagnetic wave absorption structure and described cuprio
Plate constitutes LC oscillation circuit；The surface current that each described linear polarization electromagnetic wave absorption structure produces is derived to institute by described through hole
Stating feeding network, described feeding network includes that the linear polarization electromagnetic wave absorption structure with described predetermined number feeds one to one
Unit.
Further, described through hole is plated through-hole, and described plated through-hole is opened in the position that surface current is the strongest.
Further, the resistance of described matched load is 50 ohm, and the resistance of described feed element is 90 ohm.
Further, the projection on described copper base of the described second segment is paralleled with a limit of described copper base.
Further, between the inwall of described first paragraph and described through hole, it is also filled with insulant.
Further, the model of described radio frequency substrate is R04350.
Further, the quantity of described linear polarization electromagnetic wave absorption structure is 32.
The technical scheme provided from the above present invention, the present invention is by linear polarization electromagnetic wave absorption structure and feeding network phase
In conjunction with, described linear polarization electromagnetic wave absorption structure is a kind of periodic structure based on linear polarization, and each linear polarization electromagnetism therein is inhaled
Wave structure can well at the frequency of 2.45GHz resonance produce stronger surface current.By described through hole by each line pole
Change the surface current that in electromagnetic wave absorption structure, resonance produces to derive to described feeding network, by described feeding network by each line
The electric current of polarity electromagnetic absorbent structure combines, and is connected with copper base by matched load, it is achieved loop turns on, from
And the electromagnetic wave of 2.45GHz can be effectively absorbed.Record through experiment, this electromagnetic energy grabber that the present invention provides, gather
The efficiency of energy can reach more than 90%.
Accompanying drawing explanation
Fig. 1 is the structural representation of electromagnetic energy grabber in the present invention；
Fig. 2 is the schematic diagram of feeding network in the present invention；
Fig. 3 is the S11 schematic diagram of center line polarity electromagnetic absorbent structure of the present invention；
Fig. 4 is the schematic diagram of absorption efficiency at different frequency in the present invention.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, real below in conjunction with the application
Execute the accompanying drawing in mode, the technical scheme in the application embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the application rather than whole embodiments.Based on the embodiment party in the application
Formula, other embodiments all that those of ordinary skill in the art are obtained under not making creative work premise, all answer
When the scope belonging to the application protection.
Fig. 1 is the structural representation of electromagnetic energy grabber in the present invention.Fig. 2 is the signal of feeding network in the present invention
Figure.Refer to Fig. 1 and Fig. 2, the electromagnetic energy grabber that the present invention provides include integrated copper base 1 and radio frequency substrate 4,
The linear polarization electromagnetic wave absorption structure of feeding network 5 and predetermined number, wherein, the linear polarization electromagnetic wave absorption knot of described predetermined number
Structure is distributed on described copper base 1, and described feeding network 5 is engraved on bottom described radio frequency substrate 4, described copper base 1 and described feedback
Electric network 5 is connected by matched load (not shown).
In the present embodiment, each described linear polarization electromagnetic wave absorption structure can become regular distribution on copper base 1.Respectively
Individual described linear polarization electromagnetic wave absorption structure can be made up of the copper conductor bent, and described copper conductor includes integrated first paragraph
21, second segment 22 and the 3rd section 23, wherein, the head and the tail of described second segment 22 are connected described first paragraph 21 and the described 3rd respectively
Section 23, described first paragraph 21 with described 3rd section 23 all vertical with the upper surface of described copper base 1, described second segment 22 is with described
The upper surface of copper base 1 is parallel, and the length of described first paragraph 21 length more than described 3rd section 23, described first paragraph 21 runs through
Being opened in the through hole (not shown) on described copper base 1, described linear polarization electromagnetic wave absorption structure constitutes LC with described copper base 1 and shakes
Swing loop.The surface current that each described linear polarization electromagnetic wave absorption structure produces can be derived to described feed by described through hole
Network 5, described feeding network 5 includes the linear polarization electromagnetic wave absorption structure feed element one to one with described predetermined number
51。
In the present embodiment, the feature of described linear polarization electromagnetic wave absorption structure is that this simple in construction is easily processed, work
At 2.45GHz and have the highest receiving efficiency, resonant frequency can be conveniently adjusted by the size changing structure,
There is good adjustability.The linear polarization electromagnetic wave absorption structure working in 2.45 GHz can be a kind of cycle based on linear polarization
Structure, can produce stronger surface current by resonance well, thus by resonance generation in each linear polarization electromagnetic wave absorption structure
Surface current is derived to feeding network 5 by through hole.Feeding network 5 can be by whole for the electric current of each linear polarization electromagnetic wave absorption structure
It is combined, and is connected with copper base 1 by matched load, thus realize loop conducting.
In the present embodiment, the feature of described copper base is that cost is low, it is possible to be preferably converted into by the energy of absorption
Available energy.Described linear polarization electromagnetic wave absorption structure and described copper base 1 may be constructed LC oscillation circuit.Described matched load
There is tunning effect, it is possible to affect the resonance point frequency of described electromagnetic energy grabber.
In the present invention, the direction of an electric field of incident electromagnetic wave should be with the resonance wall phase of described linear polarization electromagnetic wave absorption structure
Parallel, such that it is able to reach the strongest resonance effect.When described linear polarization electromagnetic wave absorption structure resonance, can be at copper base 1
Upper generation surface current.Described surface current can be derived to described feeding network 5 and described linear polarization by each through hole
Electromagnetic wave absorption structure feed element 51 one to one.May finally be collaborated for one electricity by the electric current of each feed element 51
Stream, and be connected with described copper base 1 by described matched load, to constitute the conducting loop of electromagnetic wave absorption.
In the present invention one preferred implementation, described through hole is plated through-hole, and described plated through-hole can be opened in table
The position that surface current is the strongest.In the present invention, described copper base it has been distributed linear polarization electromagnetic wave absorption structure and has penetrated
Frequently after base plate bottom has carved feeding network, the surface current that can produce with each linear polarization electromagnetic wave absorption structure of analogue simulation,
May thereby determine that the position that surface current is the strongest, and position the strongest for surface current is defined as described plated through-hole place
Position.
In the present invention one preferred implementation, the quantity of described linear polarization electromagnetic wave absorption structure is 32.Need explanation
, in actual application, the quantity of described linear polarization electromagnetic wave absorption structure can also be extended, and the application is to this also
Do not limit.
In the present invention one preferred implementation, the resistance of described matched load is 50 ohm, the resistance of described feed element
Value is 90 ohm.Can be obtained by experimental result, in this case, described electromagnetic energy grabber is for the electromagnetism of 2.45GHz
Wave energy enough reaches the absorption efficiency of 92%.
In the application one preferred implementation, described second segment 22 in the projection of described copper base 1 upper surface with described
One limit of copper base 1 is parallel such that it is able to preferably receive incident electromagnetic wave.
In the application one preferred implementation, it is also filled with between described first paragraph 21 and the inwall of described through hole absolutely
Edge material 3, described insulant 3 can be such as tetrafluoroethene.
In the application one preferred implementation, the model of described radio frequency substrate 4 can be R04350.
Fig. 3 is the S11 schematic diagram of center line polarity electromagnetic absorbent structure of the present invention.Fig. 4 is to inhale at different frequency in the present invention
The schematic diagram of rate of producing effects.As shown in Figure 3 and Figure 4, described linear polarization electromagnetic wave absorption structure absorbs at its resonant frequency 2.45GHz
The ability of electromagnetic wave is the strongest, the most close-20dB of return loss.Correspondingly, described electromagnetic energy grabber in resonant frequency is
At 2.45GHz, the absorption efficiency for electromagnetic wave is also up to 92%, significantly larger than by the effect of antenna collecting energy in prior art
Rate.
Additionally, in the present invention, the distance between each linear polarization electromagnetic wave absorption structure described and between feed element
Can be changed according to the actual requirements, such that it is able to change resonant frequency, such that it is able to realize electro-magnetic wave absorption frequency range
Adjustability.
The technical scheme provided from the above present invention, the present invention is by linear polarization electromagnetic wave absorption structure and feeding network phase
In conjunction with, described linear polarization electromagnetic wave absorption structure is a kind of periodic structure based on linear polarization, and each linear polarization electromagnetism therein is inhaled
Wave structure can well at the frequency of 2.45GHz resonance produce stronger surface current.By described through hole by each line pole
Change the surface current that in electromagnetic wave absorption structure, resonance produces to derive to described feeding network, by described feeding network by each line
The electric current of polarity electromagnetic absorbent structure combines, and is connected with copper base by matched load, it is achieved loop turns on, from
And the electromagnetic wave of 2.45GHz can be effectively absorbed.Record through experiment, this electromagnetic energy grabber that the present invention provides, gather
The efficiency of energy can reach more than 90%.
Above the describing of various embodiments of the application is supplied to those skilled in the art with the purpose described.It is not
It is intended to exhaustive or is not intended to limit the invention to single disclosed embodiment.As it has been described above, the application's is various
Substitute and change will be apparent from for above-mentioned technology one of ordinary skill in the art.Therefore, although the most specifically beg for
Discuss the embodiment of some alternatives, but other embodiment will be apparent from, or those skilled in the art are relative
Easily draw.The application is intended to be included in all replacements of this present invention discussed, amendment and change, and falls
Other embodiment in the spirit and scope of above-mentioned application.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical similar between each embodiment
Part see mutually, what each embodiment stressed is the difference with other embodiments.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application has many deformation
With change without deviating from spirit herein, it is desirable to appended claim includes that these deformation and change are without deviating from the application
Spirit.
Claims (7)
1. an electromagnetic energy grabber, it is characterised in that described electromagnetic energy grabber include integrated copper base and
The linear polarization electromagnetic wave absorption structure of radio frequency substrate, feeding network and predetermined number, wherein, the linear polarization electricity of described predetermined number
Magnetic wave structure is distributed on described copper base, and described feeding network is engraved on described radio frequency base plate bottom, described copper base and institute
State feeding network to be connected by matched load；Each described linear polarization electromagnetic wave absorption structure is made up of the copper conductor bent, described
Copper conductor includes integrated first paragraph, second segment and the 3rd section, and wherein, the head and the tail of described second segment are connected described respectively
First paragraph and described 3rd section, described first paragraph with described 3rd section all vertical with the upper surface of described copper base, described second
Section is parallel with the upper surface of described copper base, and the length of the described first paragraph length more than described 3rd section, described first paragraph passes through
Wearing the through hole being opened on described copper base, described linear polarization electromagnetic wave absorption structure constitutes LC oscillation circuit with described copper base；
The surface current that each described linear polarization electromagnetic wave absorption structure produces is derived to described feeding network, described feedback by described through hole
Electric network includes the linear polarization electromagnetic wave absorption structure feed element one to one with described predetermined number.
Electromagnetic energy grabber the most according to claim 1, it is characterised in that described through hole is plated through-hole, described gold
Genusization hole is opened in the position that surface current is the strongest.
Electromagnetic energy grabber the most according to claim 1, it is characterised in that the resistance of described matched load is 50 Europe
Nurse, the resistance of described feed element is 90 ohm.
Electromagnetic energy grabber the most according to claim 1, it is characterised in that described second segment is on described copper base
Projection is paralleled with a limit of described copper base.
Electromagnetic energy grabber the most according to claim 1, it is characterised in that in described first paragraph with described through hole
Insulant it is also filled with between wall.
Electromagnetic energy grabber the most according to claim 1, it is characterised in that the model of described radio frequency substrate is
R04350。
Electromagnetic energy grabber the most according to claim 1, it is characterised in that the number of described linear polarization electromagnetic wave absorption structure
Amount is 32.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814321.4A CN106208405A (en) | 2016-09-09 | 2016-09-09 | A kind of electromagnetic energy grabber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610814321.4A CN106208405A (en) | 2016-09-09 | 2016-09-09 | A kind of electromagnetic energy grabber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106208405A true CN106208405A (en) | 2016-12-07 |
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| CN201610814321.4A Pending CN106208405A (en) | 2016-09-09 | 2016-09-09 | A kind of electromagnetic energy grabber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149120A (en) * | 2018-08-30 | 2019-01-04 | 南京信息工程大学 | A kind of any polarisation angles deflector of line polarization wave |
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| WO2010078135A1 (en) * | 2008-12-31 | 2010-07-08 | Navcom Technology, Inc. | Hooked turnstile antenna for navigation and communication |
| CN104167826A (en) * | 2014-07-07 | 2014-11-26 | 浙江大学 | Linear polarized incident electromagnetic wave perfect reception wireless energy flat |
| CN204333243U (en) * | 2014-12-26 | 2015-05-13 | 航天信息股份有限公司 | A kind of micro-strip antenna array |
| CN105827024A (en) * | 2016-05-23 | 2016-08-03 | 南京信息工程大学 | Wireless energy transmission receiving device |
| CN206099534U (en) * | 2016-09-09 | 2017-04-12 | 南京信息工程大学 | Electromagnetism energy capture ware |
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2016
- 2016-09-09 CN CN201610814321.4A patent/CN106208405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010078135A1 (en) * | 2008-12-31 | 2010-07-08 | Navcom Technology, Inc. | Hooked turnstile antenna for navigation and communication |
| CN104167826A (en) * | 2014-07-07 | 2014-11-26 | 浙江大学 | Linear polarized incident electromagnetic wave perfect reception wireless energy flat |
| CN204333243U (en) * | 2014-12-26 | 2015-05-13 | 航天信息股份有限公司 | A kind of micro-strip antenna array |
| CN105827024A (en) * | 2016-05-23 | 2016-08-03 | 南京信息工程大学 | Wireless energy transmission receiving device |
| CN206099534U (en) * | 2016-09-09 | 2017-04-12 | 南京信息工程大学 | Electromagnetism energy capture ware |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149120A (en) * | 2018-08-30 | 2019-01-04 | 南京信息工程大学 | A kind of any polarisation angles deflector of line polarization wave |
| CN109149120B (en) * | 2018-08-30 | 2024-01-30 | 南京信息工程大学 | Arbitrary polarization angle deflector for linear polarized wave |
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Application publication date: 20161207 |