CN106099326B - A kind of magnetic-dipole antenna based on plasma medium modulation - Google Patents
A kind of magnetic-dipole antenna based on plasma medium modulation Download PDFInfo
- Publication number
- CN106099326B CN106099326B CN201610389875.4A CN201610389875A CN106099326B CN 106099326 B CN106099326 B CN 106099326B CN 201610389875 A CN201610389875 A CN 201610389875A CN 106099326 B CN106099326 B CN 106099326B
- Authority
- CN
- China
- Prior art keywords
- plasma
- inner core
- antenna
- magnetic coil
- magnetic
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
- H01Q1/366—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor using an ionized gas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
Landscapes
- Plasma Technology (AREA)
Abstract
A kind of magnetic-dipole antenna based on plasma medium modulation, it mainly include plasma inner core and magnetic coil, the plasma inner core is the plasma structure of semi-cylindrical or semi-circular shape, it is intertwined and connected a circle magnetic coil in the periphery of plasma inner core, the both ends of magnetic coil and frequency are that 0.3GHz electromagnetic signal is attached by feed mouth.The present invention has many advantages, such as small by resonance height-regulating antenna radiation capability, antenna size.
Description
Technical field
The present invention relates to field of communication technology, especially a kind of plasma antenna.
Background technique
Antenna is essential important component in radio communication receive-transmit system, and effect is exactly transmitting or receives
Radio wave signal.In transmitting terminal, the brewed high frequency oscillating current that transmitter generates inputs transmitting antenna through feed equipment,
High-frequency current or guided wave are changed into radio wave by transmitting antenna, i.e. Free Electromagnetic wave direction surrounding space radiates；In receiving end, nothing
Line electric wave is transformed into high-frequency current or guided wave by receiving antenna and is transmitted to receiver through feed equipment.High frequency mentioned herein
Electric current, radio wave etc. are all the different expression forms of energy.Therefore, from the above process as can be seen that antenna does not radiate still
With receive radio wave device, while be also an energy converter, be the interface device in circuit and space.From at the end of the 19th century
Since antenna comes out, in order to improve the performance and use scope of antenna, many scientists have carried out a large amount of research, and obtain
A series of breakthrough achievements.In recent years, the emissivities for improving antenna become the emphasis of antenna research.Existing Antenna Design
In addition to optimizing in structure, also optimize antenna performance using advanced material, such as: using plasma replaces gold as medium
The propagation of true existing signal and the plasma antenna generated.
Plasma is a kind of physical form generally existing in cosmic space.Under normal conditions, form there are three types of substances,
That is solid, liquids and gases.Solid can be divided into conductor, semiconductor and insulator according to the difference of electric conductivity；Liquid passes through
Positive and negative ion therein is conductive；Gas is generally non-conductive.But plasma generally has very big conductivity, electromagnetically
Can on be different from common gases completely, it be by set of charged particles it is integral in quasi-neutrality, have the non-bound state body of collective effect
System, generally comprises electronics, ion and neutral particle, is and the gaseous state of substance, liquid and solid-state tri-state and the 4th state deposited.Deng
Gas ions are typical dispersive medium, and dielectric constant is reduced with the increase of plasma density.In extraneous electromagnetic wave
Under Different Effects, plasma is possible to show two different properties: when external electromagnetic wave frequency rate is greater than plasma frequency
When rate, electromagnetic wave will be by plasma absorption, at the same time, and antenna can give off the electromagnetic wave of certain wavelength, can also pass through
Change the density of plasma to change plasma frequency, achievees the purpose that control antenna radiation characteristics；When external electromagnetic wave
When frequency is less than plasma frequency, for the relative dielectric constant of plasma less than zero, refractive index is imaginary number, also means that electricity
Magnetic wave is to enter optically thinner medium from optically denser medium, cannot cross boundary propagation, will be reflected back, plasma has at this time
The property similar with metal medium.In fact, ionosphere, itself is a great plasma, short wave communication is exactly to utilize
This property, the electromagnetism wave energy of different frequency reflects at the difference electron concentration of ionosphere, in fact namely because not
Changed with the plasma frequency at height.
In general plasma antenna is filled with the glass tube of certain gas or earthen-ware pipe is formed by inside, pass through by
Its internal gas ionization, can be to the density of regulation gas, control in ionization process to keep antenna in running order
Electromagnetic field carries out dynamic restructuring to its structure, adapts it to different transmission frequencies, direction, gain, transmission bandwidth etc., therefore one
A plasma antenna can undertake the function of several different metal antennas, so that antenna amount needed for setting up aerial array is big
Big to reduce, volume and weight is also reduced together.Plasma antenna generally includes two types: one kind, which refers to, utilizes plasma
Electromagnetic wave radioactive nature, constitute the reflecting surface of an electromagnetic wave, as on ordinary meaning utilize metal constitute surface antenna it is anti-
Penetrate face.Plasma gas is electrically conductive just as conductor under certain condition, and can emit and receive radio signal；
Second class plasma antenna is exactly using plasma generator discharge tube as antenna element.Inert gas when energization, in pipe
Conductor is ionized and become, electromagnetic wave signal can be emitted and receive；When power-off, become insulator, it will not reflection electromagnetic wave.Therefore,
Plasma antenna is different from traditional metal antenna.Relative to metal antenna, plasma antenna can not needed very
Big volume can be carried out the transmission of low frequency signal.Also due to the property of plasma, plasma antenna will only can be to being lower than
Or responded equal to the electromagnetic wave of plasma local oscillation frequency, higher than the electromagnetic wave of the frequency, can pass freely through
Plasma antenna, can't plasma antenna have an impact, thus greatly reduce dry between plasma antenna
It disturbs.In addition, the special nature based on plasma, change by adjusting external parameters such as excitation plasma power, magnetic fields etc.
Length, density of gas ions etc. can realize that the optimum Working of different transmitting-receiving frequency antennas is fast on millisecond to musec order
Speed reconstruct.
In conclusion due to the unique physical property of plasma so that plasma antenna have stealth, it is light-weight,
The advantages that small in size, high-efficient.And existing plasma antenna is the reflex based on plasma to electromagnetic signal, work
Plasmasphere thickness is required to be greater than antenna wavelength in work, it is desirable that the plasma of high density and big thickness is unfavorable for miniature antenna
Group battle array work.Therefore, a kind of low-density is developed, the antenna of small size is very necessary.
Summary of the invention
It is an object of that present invention to provide one kind to be turned up that antenna radiation capability, antenna size be small, plasma density by resonance
And the magnetic-dipole antenna based on plasma medium modulation of small volume.
To achieve the above object, following technical scheme is used: the invention mainly comprises plasma inner core and magnetic coil,
The plasma inner core is the plasmon structures of semi-cylindrical or semi-circular shape, is intertwined and connected in the periphery of plasma inner core
One circle magnetic coil, both ends and the frequency of magnetic coil are that 0.3GHz electromagnetic signal is attached by feeding mouth.
Further, the plasma inner core use half cylindrical structure, radius be 3cm~5cm, with a thickness of 1cm~
3cm；The radius for the magnetic coil that plasma inner core periphery is wound is greater than inner core radius, thickness is equal to inner core thickness；Magnetic coil
It is entwined by the plain conductor that radius is 1mm~2mm.
Further, the plasma inner core uses semi-circular shape structure, since annular region is hollow structure, in order to
Volume of plasma is improved to improve aerial radiation effect, ring structure size, the inner circle radius of plasma inner core need to be increased
3cm~4.5cm, exradius is 6~9cm centimetres, with a thickness of 1cm~3cm.
Further, existing direct-current discharge, dielectric barrier discharge and microwave discharge can be used in the plasma inner core
It discharges and is formed in cylinder or the quartz container of semi-circular shape.
Compared with prior art, the present invention has the advantage that
1, the plasma inner core that certain structure is introduced on the basis of traditional magnetic-dipole antenna is situated between using plasma is negative
The characteristic of electric constant forms the resonance of electric field inside magnetic-dipole antenna, and antenna radiation capability, Ke Yida is turned up by resonance
To 10 times of former dipole antenna radiation intensity.
2, by adjust plasma inner core shape, the directionality of radiation field of aerial may be implemented, the antenna size compared with
Small, the plasma density and volume of Antenna Operation are also smaller, and the group battle array particularly suitable for miniature antenna works.
Detailed description of the invention
Fig. 1 is the structure diagram that the present invention uses semi-cylindrical inner core.
Fig. 2 is the performance plot changed using the aerial radiation intensity of semi-cylindrical inner core with plasma density.
Fig. 3 is the radiated far field performance plot using semi-cylindrical inner core.
Fig. 4 is the structure diagram that the present invention uses semi-circular shape inner core.
Fig. 5 is the radiated far field performance plot using semi-circular shape inner core.
Fig. 6 is the coil inside electric field distribution characteristic figure using semi-circular shape inner core.
Drawing reference numeral: 1- plasma inner core, 2- magnetic coil.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
As shown in Figure 1, the plasma inner core is semicircle the invention mainly comprises plasma inner core 1 and magnetic coil 2
The generation of cylindrical plasms body structure, plasma can be using forms such as quartz container internal discharge, hot cathode.In plasma
The periphery of internal core is intertwined and connected a circle magnetic coil.The radius of inner core is 3cm~5cm, with a thickness of 1cm~3cm；In plasma
The radius for the magnetic coil that core core periphery is wound is equal to inner core thickness slightly larger than inner core radius, thickness；Magnetic coil is 1mm by radius
The plain conductor of~2mm is entwined.The both ends of magnetic coil are attached for 0.3GHz electromagnetic signal by feeding mouth with frequency,
It adjusts strength of discharge further to adjust plasma density, is 1A/m in magnetic coil surface current2In the case of, pass through Numerical-Mode
Intend available apart from the position antenna 0.9m, radiation intensity is with plasma density variation characteristic, as shown in Figure 2.Therefore real
During the work time, choose plasma density is 2 × 10 to border antenna16m-3, the radiation intensity of antenna not can reach not etc. at this time
10 times when gas ions inner core, antenna remote characteristic is as shown in Figure 3 at this time.It simultaneously can be by coil internal plasma
The medium of differing dielectric constant is placed in the opposite semicolumn of core to change plasma density corresponding to radiation maximum intensity.
As shown in figure 4, the plasma inner core is semicircular ring the invention mainly comprises plasma inner core and magnetic coil
Shape plasma magnet structure, inner circle radius 3cm~4.5cm of plasma inner core, exradius are 6~9cm centimetres, with a thickness of
1cm~3cm.Again may be by adjusting strength of discharge selects maximum radiant intensity as work electricity, and Antenna Far Field is special at this time
Property as shown in figure 5, aerial radiation have obvious directionality, it can be achieved that radiation directionality.
For magnetic-dipole antenna in the case where no plasma inner core, internal electric field distribution such as Fig. 6 (a) is shown, this
When plasma in core inner capacitive is presented, electric field presents clockwise；After introducing high-density plasma (Fig. 6 (b)), wait from
The dielectric constant of daughter is negative value, and perception is presented, and plasma phase corresponding part is air, and dielectric constant is positive value, is presented
Capacitive；Coil inside changes of magnetic field is identical in the case of two kinds, and resulting induced electromotive force is identical, that is, electric field is along closing
The integral for closing curve (dotted portion in Fig. 6) is identical.After introducing plasma inner core, plasma internal electric field is square counterclockwise
To, with direction of an electric field in vacuum on the contrary, so as to form plasma inner core internal electric field resonance characteristics so that electric field strength
Increase, and then improves antenna radiation capability.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (2)
1. it is a kind of based on plasma medium modulation magnetic-dipole antenna, mainly include plasma inner core and magnetic coil,
Be characterized in that: the plasma inner core is the plasmon structures of semi-cylindrical or semi-circular shape, in the outer of plasma inner core
The circle magnetic coil that is intertwined and connected is enclosed, both ends and the frequency of magnetic coil are that 0.3GHz electromagnetic signal is attached by feeding mouth；Institute
Plasma inner core is stated using half cylindrical structure, radius is 3cm~5cm, with a thickness of 1cm~3cm；Plasma inner core periphery
The radius of the magnetic coil wound is greater than inner core radius, thickness is equal to inner core thickness；The gold that magnetic coil is 1mm~2mm by radius
Belong to conducting wire to be entwined；The plasma inner core uses semi-circular shape structure, since annular region is hollow structure, in order to mention
High beta plasma volume need to increase ring structure size, the inner circle radius 3cm of plasma inner core to improve aerial radiation effect
~4.5cm, exradius is 6~9cm centimetres, with a thickness of 1cm~3cm.
2. a kind of magnetic-dipole antenna based on plasma medium modulation according to claim 1, it is characterised in that: institute
Stating plasma inner core can be used direct-current discharge, dielectric barrier discharge and microwave discharge in cylinder or the quartz appearance of semi-circular shape
Electric discharge is formed in device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389875.4A CN106099326B (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic-dipole antenna based on plasma medium modulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389875.4A CN106099326B (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic-dipole antenna based on plasma medium modulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106099326A CN106099326A (en) | 2016-11-09 |
| CN106099326B true CN106099326B (en) | 2019-03-22 |
Family
ID=57448639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610389875.4A Active CN106099326B (en) | 2016-06-02 | 2016-06-02 | A kind of magnetic-dipole antenna based on plasma medium modulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106099326B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107808998B (en) * | 2017-09-30 | 2020-06-05 | 京信通信技术(广州)有限公司 | Multi-polarization radiation oscillator and antenna |
| CN112164900B (en) * | 2020-10-26 | 2021-09-28 | 北京邮电大学 | Plasma dielectric resonant antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3462865B2 (en) * | 2001-07-10 | 2003-11-05 | 三菱重工業株式会社 | Feeding antenna and semiconductor manufacturing apparatus |
| JP4086450B2 (en) * | 2000-05-11 | 2008-05-14 | 東京エレクトロン株式会社 | Microwave antenna and microwave plasma processing apparatus |
| CN102845137A (en) * | 2010-04-20 | 2012-12-26 | 朗姆研究公司 | Methods and apparatus for induction coil arrangement in plasma processing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030041217A (en) * | 2001-11-19 | 2003-05-27 | 주성엔지니어링(주) | Antenna electrode used in inductively coupled plasma generation apparatus |
-
2016
- 2016-06-02 CN CN201610389875.4A patent/CN106099326B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4086450B2 (en) * | 2000-05-11 | 2008-05-14 | 東京エレクトロン株式会社 | Microwave antenna and microwave plasma processing apparatus |
| JP3462865B2 (en) * | 2001-07-10 | 2003-11-05 | 三菱重工業株式会社 | Feeding antenna and semiconductor manufacturing apparatus |
| CN102845137A (en) * | 2010-04-20 | 2012-12-26 | 朗姆研究公司 | Methods and apparatus for induction coil arrangement in plasma processing system |
Non-Patent Citations (1)
| Title |
|---|
| （A physical model of radiated enhancement of plasma-surrounded antenna;Xiaotian Gao, Chunsheng Wang;《physics of plasmas》;20140911;第二节，图1 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106099326A (en) | 2016-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Wheeler | Small antennas | |
| Yadava | Antennas and wave propagation | |
| US9543640B2 (en) | Pseudo-conductor antennas | |
| CN100388559C (en) | Self-reconstruction plasma antenna | |
| CN106532976A (en) | Wireless electric energy transmission device based on 13.56MHz metamaterial | |
| CN105932404B (en) | Plasma flexible antenna system | |
| US9685826B1 (en) | Wireless power system with position detection | |
| CN106099326B (en) | A kind of magnetic-dipole antenna based on plasma medium modulation | |
| Melazzi et al. | Analytical and numerical study of a gaseous plasma dipole in the UHF frequency band | |
| CN102354798A (en) | Magnetically controlled beam variable plasma antenna array | |
| Barro et al. | Reconfigurable patch antenna radiations using plasma faraday shield effect | |
| CN107946156A (en) | Electronic collector of coaxial transit time oscillator capable of working in long pulse state | |
| Lee et al. | High efficiency metamaterial-based multi-scale wireless power transfer for smart home applications | |
| CN110502792B (en) | Method and device for realizing wireless energy transmission based on metal grid cavity structure | |
| US20120194400A1 (en) | High power broadband antenna | |
| Mansutti et al. | A reconfigurable metal-plasma yagi-yuda antenna for microwave applications | |
| Vyas et al. | Gain enhancement over a wideband in CPW-fed compact circular patch antenna | |
| RU2183888C1 (en) | Method for increasing effective height of small- size antenna assembly and small-size antenna assembly for implementing this method | |
| Gobien III | Investigation of low profile antenna designs for use in hand-held radios | |
| CN102354804A (en) | High-gain microstrip radiating antenna | |
| CN105914118B (en) | A kind of axial Virtual Cathode Oscillators of L-band | |
| Minaev et al. | A plasma receiving dipole antenna | |
| CN202308283U (en) | Plasma antenna array with alterable magnetic control beam | |
| Sharma et al. | Bandwidth enhancement techniques of dielectric resonator antenna | |
| CN110098460B (en) | Reconfigurable broadband antenna based on electrically-regulated plasma |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211108 Address after: 310000 No. 581, torch Avenue, Hangzhou, Zhejiang Patentee after: SUNWAVE COMMUNICATIONS Co.,Ltd. Address before: 066004 No. 438 west section of Hebei Avenue, seaport District, Hebei, Qinhuangdao Patentee before: Yanshan University |