CN106207448A - A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate - Google Patents
A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate Download PDFInfo
- Publication number
- CN106207448A CN106207448A CN201610749502.3A CN201610749502A CN106207448A CN 106207448 A CN106207448 A CN 106207448A CN 201610749502 A CN201610749502 A CN 201610749502A CN 106207448 A CN106207448 A CN 106207448A
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- Prior art keywords
- photon crystal
- dipole antenna
- dipole
- antenna
- reflection substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
-
- 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
- H01Q19/108—Combination of a dipole with a plane reflecting surface
-
- 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
- H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, including dipole antenna, dipole, SMA coaxial line conversion head and three-D photon crystal；Dipole antenna includes two copper guide rods, and two copper guide rod intervals are fixing on insulator；Dipole, with SMA coaxial line conversion head as feeding interface, using thin copper wire as the dipole of antenna, is respectively welded on center pin and the outer wall of SMA coaxial line conversion head with two sections of thin copper wire one end, and the other end welds with two copper guide rods of dipole antenna respectively；Three-D photon crystal is arranged on dipole antenna side as reflection substrate, and three-D photon crystal is the minus photon crystal structure of ball-like diamond.The present invention uses three-D photon crystal significantly to be reflected as reflection substrate, the electromagnetic wave of this frequency, adds the reflected energy to free space, thus improves the radiation gain of antenna, it is possible to plays a significant role in the communications field.
Description
Technical field
The present invention relates to communication technical field, particularly to a kind of dipole antenna.
Background technology
Photonic crystal be a kind of dielectric constant be the artificial intraocular lenses of periodic arrangement, key property have photon band gap characteristic,
Photon locality and the optical characteristics of some uniquenesses.Wherein photon band gap is the characteristic that it is the most basic, refers to when frequency falls at band
Incident illumination in gap can be totally reflected, thus cannot pass through photonic crystal.Utilize this characteristic, it is possible to achieve come with photonic crystal
Suppress unwanted spontaneous radiation, and then control the transmission of electromagnetic wave signal efficiently, reduce the energy loss in transmitting procedure.
Photonic crystal is divided into 3 classes according to the Spatial Dimension that refractive index periodic changes, the most one-dimensional, two and three dimensions photonic crystal, wherein
Three-D photon crystal has full band gap forbidden band characteristic.
Traditional dipole antenna, mainly applies two-dimensional photon crystal structure, simple in construction and easily making, but radiation
Inefficient.
Summary of the invention
It is an object of the invention to provide and a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate；Can
The energy in certain direction of reflector dipole antenna significantly, thus improve reciprocal radiation gain.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that
A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, including dipole antenna, dipole,
SMA coaxial line conversion head and three-D photon crystal；Dipole antenna includes that two copper guide rods, two copper guide rod intervals are fixed on absolutely
On edge body；Dipole with SMA coaxial line conversion head as feeding interface, using thin copper wire as the dipole of antenna, with two sections of thin copper
Silk one end is respectively welded on center pin and the outer wall of SMA coaxial line conversion head, the other end respectively with two of dipole antenna
Copper guide rod welds；Three-D photon crystal is arranged on dipole antenna side as reflection substrate, and three-D photon crystal is spherical gold
The minus photon crystal structure of hard rock.
Further, dipole antenna is the radiant being respectively welded at SMA coaxial line conversion head by two copper guide rods.
Further, three-D photon crystal is placed at distance dipole antenna λ/4；λ is the ripple of the microwave of aerial radiation
Long, λ=30mm.
Further, the radiation frequency of pole sub antenna is 9.5GHz；The length L=λ/2=15mm of dipole antenna.
Further, three-D photon crystal material is aluminium oxide ceramics, and lattice paprmeter is 20mm, and radius is 6mm, and thickness is
In 4 cycles, dielectric constant is 5, is air dielectric in ball；The full bandgap range of three-D photon crystal comprises frequency 9.5GHZ.
Further, the length of copper guide rod is quarter-wave L=λ/4.
Further, SMA coaxial line adapter is standard 3.5mmSMA coaxial line conversion head.
Compared with prior art, the present invention has following technical effect that
The present invention uses three-D photon crystal as reflection substrate.Compared with one-dimensional two-dimensional structure, three-D photon crystal is tied
Structure has complete band gap, and the forbidden band scope of design photon crystal structure comprises the radiation frequency of dipole antenna, in frequency forbidden band
In the range of electromagnetic wave will be fettered, it is impossible to any direction propagate, thus can suppress along substrate floor media propagate surface
Ripple.The absorption of electromagnetic wave is greatly reduced by Antenna baseplate, and so electromagnetic wave of this frequency is significantly reflected, add to
The reflected energy of free space, thus improve the radiation gain of antenna, it is possible to play a significant role in the communications field.It addition,
Substrate is not fixed with dipole antenna, it is possible to achieve meet freely assembling of the active antenna in the range of forbidden band, and economical
Practicality, operation is simple.
Further, three-D photon crystal is placed at distance dipole antenna λ/4, and this distance meets reflecting antenna spoke
Penetrate the maximal condition of gain.
Further, electric current is in opposite direction two copper wires, thus forms good space radiation.
Accompanying drawing explanation
Fig. 1 is three-D photon crystal and dipole antenna illustraton of model；
Fig. 2 is three-D photon crystal and dipole antenna assembling figure；
Fig. 3 is the E surface radiation figure of common dipole sub antenna；
Fig. 4 is that the present invention is a kind of utilizes three-D photon crystal as the E surface radiation figure of the dipole antenna of reflection substrate.
Wherein: 1-dipole antenna；2-three-D photon crystal；3-dipole；4-SMA coaxial line conversion head；5-copper wire；6-
Center pin；7-outer wall；8-copper guide rod, 9-insulator.
Detailed description of the invention
Referring to shown in Fig. 1 and Fig. 2, the present invention is a kind of utilizes three-D photon crystal as the dipole sky of reflection substrate
Line, including dipole antenna 1, dipole 3, SMA coaxial line conversion head 4 and three-D photon crystal 2；Dipole antenna 1 includes two
Root copper guide rod, two copper guide rod intervals are fixed on insulator 9；Dipole 3 with SMA coaxial line conversion head 4 as feeding interface, with
Thin copper wire, as the dipole 3 of antenna, is respectively welded at center pin 6 He of SMA coaxial line conversion head 4 with two sections of thin copper wire one end
On outer wall 7, the other end welds with two copper guide rods of dipole antenna 1 respectively；Two copper guide rods of dipole antenna 1 weld respectively
It is connected on the radiant of SMA coaxial line conversion head 4；Three-D photon crystal 2 is the minus photon crystal structure of ball-like diamond.
A kind of three-D photon crystal is utilized to comprise the following steps as the manufacture method of the dipole antenna of reflection substrate:
With reference to Fig. 2: design radiation frequency is at the half wavelength dipoles sub antenna 1 of 9.5GHz, then according to half wavelength dipole sky
The design principle of line, the length L=λ/2=15mm of dipole antenna 1；λ is the wavelength of the microwave of aerial radiation, λ=30mm.Half
The preparation of wavelength antennas is simple, can be made by real wire or metal tube.Buy the SMA of existing standard 3.5mm on market coaxial
Line conversion head 4, using thin copper wire as the dipole 3 of antenna, length is according to half-wavelength definition=15mm, and is welded by two sections of copper wires
Between the center pin 6 and outer wall 7 and the copper pipe of correspondence of SMA coaxial line conversion head 4.For three-D photon crystal 2, according to antenna
Radiation frequency design photonic crystal forbidden band comprise this Frequency point.Based on experience value, (actual according to alumina ceramic material
Dielectric constant be about 5), the structure of three-D photon crystal 2 uses the minus structure of ball-type diamond, then the crystalline substance of design structure
Lattice constant is 20mm, and radius is 6mm.Understand according to theoretical and experiment, three-D photon crystal 2 and half wavelength dipoles sub antenna 1
When distance is for λ/4, reflection efficiency is the highest.
Common dipole sub antenna and the gain contrast of three-D photon crystal dipole antenna:
With reference to Fig. 3 and Fig. 4: experiment test common dipole sub antenna and the E surface radiation of three-D photon crystal dipole antenna
Figure.Common dipole sub antenna radiation frequency 9.6GHz E surface radiation collection of illustrative plates show, maximum gain-62dB (due to reality survey
There is free space loss, the coupling loss of antenna and other losses and cause test result at below-100dB in examination).And it is three-dimensional
The maximum gain of photonic crystal dipole antenna improves 11dB, improves about 12.6 times.With three-D photon crystal as reflection
The radiation pattern plots of the dipole antenna of substrate is more smooth, and reason is the biography that photonic crystal can suppress surface wave effectively
Broadcast.The full band gap performance of the reflection substrate of results contrast explanation three-D photon crystal effectively raises the increasing of dipole antenna
Benefit.
Claims (6)
1. one kind utilizes three-D photon crystal as the dipole antenna of reflection substrate, it is characterised in that include dipole antenna
(1), dipole (3), SMA coaxial line conversion head (4) and three-D photon crystal (2)；Dipole antenna includes two copper guide rods, two
Root copper guide rod interval is fixed on insulator (9)；Dipole (3) with SMA coaxial line conversion head (4) as feeding interface, with thin copper
Silk, as the dipole (3) of antenna, is respectively welded at the center pin (6) of SMA coaxial line conversion head (4) with two sections of thin copper wire one end
With on outer wall (7), the other end welds with two copper guide rods of dipole antenna (1) respectively；Three-D photon crystal (2) is as reflection
Substrate is arranged on dipole antenna (1) side, and three-D photon crystal (2) is the minus photon crystal structure of ball-like diamond.
The most according to claim 1 a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, its feature
Being, three-D photon crystal (2) is placed at distance dipole antenna (1) λ/4；λ is the wavelength of the microwave of aerial radiation, λ=
30mm。
The most according to claim 1 a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, its feature
Being, the radiation frequency of dipole antenna (1) is 9.5GHz；The length L=λ/2=15mm of dipole antenna (1).
The most according to claim 1 a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, its feature
Being, three-D photon crystal (2) material is aluminium oxide ceramics, and lattice paprmeter is 20mm, and radius is 6mm, and thickness is 4 cycles,
Dielectric constant is 5, is air dielectric in ball；The full bandgap range of three-D photon crystal (2) comprises frequency 9.5GHZ.
The most according to claim 1 a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, its feature
Being, the length of copper guide rod is quarter-wave L=λ/4.
The most according to claim 1 a kind of utilize three-D photon crystal as the dipole antenna of reflection substrate, its feature
Being, SMA coaxial line adapter (4) is standard 3.5mmSMA coaxial line conversion head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749502.3A CN106207448A (en) | 2016-08-26 | 2016-08-26 | A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610749502.3A CN106207448A (en) | 2016-08-26 | 2016-08-26 | A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate |
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| CN106207448A true CN106207448A (en) | 2016-12-07 |
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| CN201610749502.3A Pending CN106207448A (en) | 2016-08-26 | 2016-08-26 | A kind of utilize three-D photon crystal as the dipole antenna of reflection substrate |
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Citations (10)
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|---|---|---|---|---|
| CN1299159A (en) * | 1999-12-03 | 2001-06-13 | 富士康(昆山)电脑接插件有限公司 | Coaxial cable antenna and its making method |
| US20040217903A1 (en) * | 2001-02-15 | 2004-11-04 | Integral Technologies, Inc. | Low cost antennas using conductive plastics or conductive composites |
| CN1710747A (en) * | 2004-06-17 | 2005-12-21 | 上海无线电设备研究所 | Archimedian spiral antenna using photon band-gap as reflection chamber |
| CN101051705A (en) * | 2006-04-04 | 2007-10-10 | 黄启芳 | Crushed shape antenna |
| CN101572355A (en) * | 2009-06-15 | 2009-11-04 | 哈尔滨工业大学 | Antenna reflector with a compact single-surface photo band gap (PBG) periodic structure |
| CN201430212Y (en) * | 2009-06-11 | 2010-03-24 | 北京邮电大学 | Doublet antenna |
| CN101717989A (en) * | 2009-11-13 | 2010-06-02 | 西安交通大学 | Three-dimensional photonic crystal manufacturing method |
| US8872725B1 (en) * | 2009-10-13 | 2014-10-28 | University Of South Florida | Electronically-tunable flexible low profile microwave antenna |
| CN104900998A (en) * | 2015-05-05 | 2015-09-09 | 西安电子科技大学 | Low-profile dual-polarized base station antenna |
| CN206098711U (en) * | 2016-08-26 | 2017-04-12 | 长安大学 | Utilize dipole antenna of three -dimensional photonic crystal as reflection base plate |
-
2016
- 2016-08-26 CN CN201610749502.3A patent/CN106207448A/en active Pending
Patent Citations (10)
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|---|---|---|---|---|
| CN1299159A (en) * | 1999-12-03 | 2001-06-13 | 富士康(昆山)电脑接插件有限公司 | Coaxial cable antenna and its making method |
| US20040217903A1 (en) * | 2001-02-15 | 2004-11-04 | Integral Technologies, Inc. | Low cost antennas using conductive plastics or conductive composites |
| CN1710747A (en) * | 2004-06-17 | 2005-12-21 | 上海无线电设备研究所 | Archimedian spiral antenna using photon band-gap as reflection chamber |
| CN101051705A (en) * | 2006-04-04 | 2007-10-10 | 黄启芳 | Crushed shape antenna |
| CN201430212Y (en) * | 2009-06-11 | 2010-03-24 | 北京邮电大学 | Doublet antenna |
| CN101572355A (en) * | 2009-06-15 | 2009-11-04 | 哈尔滨工业大学 | Antenna reflector with a compact single-surface photo band gap (PBG) periodic structure |
| US8872725B1 (en) * | 2009-10-13 | 2014-10-28 | University Of South Florida | Electronically-tunable flexible low profile microwave antenna |
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| CN104900998A (en) * | 2015-05-05 | 2015-09-09 | 西安电子科技大学 | Low-profile dual-polarized base station antenna |
| CN206098711U (en) * | 2016-08-26 | 2017-04-12 | 长安大学 | Utilize dipole antenna of three -dimensional photonic crystal as reflection base plate |
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| Title |
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Application publication date: 20161207 |