CN105811119A - Ultra wideband wave absorber based on resistance loading - Google Patents
Ultra wideband wave absorber based on resistance loading Download PDFInfo
- Publication number
- CN105811119A CN105811119A CN201610220687.9A CN201610220687A CN105811119A CN 105811119 A CN105811119 A CN 105811119A CN 201610220687 A CN201610220687 A CN 201610220687A CN 105811119 A CN105811119 A CN 105811119A
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- China
- Prior art keywords
- metal floor
- dipole
- dipole antenna
- array antenna
- ultra wideband
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/007—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with means for controlling the absorption
Abstract
The invention discloses an ultra wideband wave absorber based on resistance loading. The ultra wideband wave absorber comprises a dipole array antenna, patch resistors, a metal floor and four plastic screws, wherein the four plastic screws are used for locating and fixing the dipole array antenna and the metal floor, the dipole array antenna is formed by periodically arranging a plurality of same dipoles similar to butterfly wings, two welding points of a single patch resistor are separately welded at the two ends of a dipole arm so as to further achieve perfect matching with a single dipole, and an electromagnetic wave can be absorbed by the dipole array antenna and is consumed by the patch resistors so as to achieve the purpose of wave absorption. The ultra wideband wave absorber can be applied to a microwave/millimeter-wave anti-interference system and has the advantages of simplicity in structure, light weight, low cost, unit miniaturization and short processing period; and moreover, the electromagnetic wave absorption within different frequency ranges can be achieved by designing dipole antennas in different frequency ranges.
Description
Technical field
The invention belongs to microwave absorbing material technical field, a kind of ultra broadband wave absorbing device related to.
Background technology
High speed development along with modern communications, electromagnetic wave in space is more and more also more and more complicated, other system can be interfered so that system cannot normal operation unavoidably, and inhale ripple and also play vital effect antenna is stealthy, the Radar Cross Section of antenna can be reduced, this just Stealthy reflector Antenna pursue, development along with ECM, absorbent structure is had higher requirement, and direction good towards wave-absorbing effect, that suction wavestrip is wide, absorbent structure planarizes is developed simultaneously.Therefore, the focus that ultra broadband research remains industrial quarters, academia is studied of absorbent structure.
In order to test the broadband character of absorbing material, Tang Yang et al. discloses a kind of ultra-thin broadband absorbing material (Tang Yang based on frequency-selective surfaces, high sturdy pines, Wang Yansong, Xu Nianxi, Chen Xin, ultra-thin broadband absorbing material based on frequency-selective surfaces, application number: CN201310613651, the applying date: 2013.11.25), broadband wave-absorbing effect is realized by printing special pattern structure on substrate, but this absorbing material graphics Web publishing is complicated, inhale ripple Theory comparison outmoded, although achieving reflection coefficient in very wide frequency band range less than-10dB, its wave-absorbing effect also has very big room for promotion.YupingShang et al. discloses and a kind of add the mode of resistance by dicyclo and achieve suction ripple (YupingShang, ZhongxiangShen, the SeniorMember in broadband；IEEE,andShaoqiuXiao,Member；IEEE, " OntheDesignofSingle-LayerCircuitAnalogAbsorberUsingDoubl e-Square-LoopArray ", IEEETRANSACTIONSONANTENNAPROPAGATION, VOL.61, NO.12, DECEMBER2013.pp.6022-6029), utilize Analysis of Equivalent Circuit method to realize wide band suction ripple by the additional Chip-R of twin nuclei that design size is suitable.Simply twin nuclei unit size wants big compared with the cellular construction of the present invention, and resistance number is too much, in microwave and millimeter wave frequency range, the size of Chip-R is only small, micro electric welding resistance so many for quantity being received on dicyclo is very time-consuming and effort thing, additionally the height of twin nuclei distance metal floor is excessive, is unsatisfactory for the requirement of low section.
Summary of the invention
It is an object of the invention to overcome the deficiency of above-mentioned technology, it is provided that one realizes wide-band and inhales wave method, when realizing height and inhaling ripple rate, make absorbent structure become very simple, analytical mathematics is apparent, has very big novelty.
To achieve these goals, the technical solution used in the present invention is: a kind of ultra broadband wave absorbing device based on resistor loaded, including loading dipole antenna array, medium substrate, metal floor and for connecting four plastic screws of the array antenna of dipoles and metal floor, described loading dipole antenna array is to have the symmetrical dipole antenna periodic arrangement being printed on single-layer medium substrate, and the spacing between dipole antenna array is by the gain Gao Laiding of mutually even little, the aerial array made between antenna；Described four angles of dipole antenna array medium substrate place is drilled with four fixing plastics through holes in location；Described four angles of metal floor place is drilled with the through hole of four location；The diameter of thread of described four plastics screws is identical with four screw hole diameters on metal floor and four through-hole diameters on dipole antenna array, and four lead to the hole site on metal floor are corresponding identical respectively with four lead to the hole site on medium substrate, by four plastic screws, the array antenna of dipoles and metal floor are coupled together, it is possible to realized the change of the different suction ripple rate of different frequency range by the distance between regulating floor from dipole antenna.
Further, the unit of described loading dipole antenna array is to be made up of the Copper Foil periodic arrangement like butterfly's wing shape, the real part flatness of the input impedance of single dipole antenna is very wide, imaginary part is only small, good coupling can be formed with pure resistance, the feed port of dipole is all changed into the Chip-R that model 0805 resistance is 82 ohm.
Further, metal floor and the distance loaded between the array antenna of dipoles to be required separation distance by the length of described plastic screw, to realize broadband suction ripple.
The know-why of the present invention is: as absorbing material, its suitability of absorbing material with metal floor is bigger, and capacity of resisting disturbance is higher.Antenna is as a reciprocal element, electromagnetic wave can either be launched also be able to receive electromagnetic wave, utilize this principle of reciprocity just, when antenna is as when receiving electromagnetic device, if can by the electromagnetic wave received with there being consumption element loss to fall, then we just realize the suction ripple of very good effect.Simply the resistance of our existing Chip-R is all integer, without any imaginary part, if to match with dipole antenna, so the requirement of this electrode couple sub antenna is just significantly high, it requires that the imaginary part only small (or being zero) of dipole antenna input impedance and real part are fine in a certain wideband frequency range internal resistance value flatness, so could realize wide band coupling with Chip-R, thus realizing efficiently inhaling ripple.But, the input impedance of this dipole antenna that we invent is verified is strictly that the imaginary part of input impedance is only small, real part flatness in a certain broadband range is fine, it is possible to obtain very big reflection bandwidth.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) array antenna of dipoles of the present invention is the array being printed a kind of dipole antenna periodic arrangement like butterfly's wing by single-layer medium substrate, its simple in construction, pattern are graceful, have features designed to low, manufacturing cycle is short, the advantage such as lightweight.
(2) present invention proposes a kind of brand-new suction ripple theory, and the dipole antenna of other forms or even paster antenna all can carry out structure wave absorbing device by this theory, and wave-absorbing effect also has very big lifting.
(3) present invention can pass through to design the dipole antenna within the scope of different frequency range, is theoretically the suction ripple that can accomplish any frequency range, provides a good solution for solving broad band low frequency suction ripple.
The purpose of the present invention, feature and advantage will in conjunction with the embodiments, do explanation further below with reference to accompanying drawing.
Accompanying drawing explanation
Fig. 1 be the present invention totally launch schematic diagram.
Fig. 2 is the reflection coefficient of the present invention.
Fig. 3 is the absorbance of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, solving the technical problem that and technical scheme becomes apparent from, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Fig. 1 be the present invention totally launch schematic diagram, including loading dipole antenna array 1, medium substrate 2, metal floor 3 and connecting the plastic screw 4 of dipole antenna array and metal floor.Described dipole antenna array is that (relative dielectric constant is 4.4 by the FR4 being printed on the high loss that thickness is 0.8mm, loss angle tangent is 0.02) many doublet units 11 periodic arrangement on dielectric substrate 2, described doublet unit 11 is to be made up of the copper sheet being printed on dielectric substrate 2 like butterfly's wing, and the shape size of each cellular construction is duplicate；The solder joint at Chip-R 12 two ends is respectively welded in the two-arm of doublet unit 11, and as main dissipative cell, and the distance between doublet unit 11 must with the consistent size of Chip-R 12 so that Chip-R 12 can work normally；Four fixing through holes 21 in location it are drilled with in the corner of dipole antenna array medium substrate；Described metal floor 3, four fixing through holes 31 in location it are drilled with in its corner, the diameter of four described plastic screws 4 is identical with four through hole 21 diameters on the array antenna of dipoles and four through hole 31 diameters on metal floor, it is 2mm, and the position of four through holes is corresponding identical respectively with the position of on metal floor four through holes on the array antenna of dipoles, by 4 plastic screws 4 metal floor 3 is connected with the array antenna of dipoles 2 and is fixed up, the effect of the different suction ripple rate of different frequency is realized by regulating the distance between metal floor 3 and the array antenna of dipoles 1.
Fig. 2 gives in being originally embodied as, the soldering surface mounted resistance of port of the array antenna of dipoles is as the reflection coefficient of absorbent structure, its operating frequency range is 3.79GHz-11.79GHz, can be good at coincideing as the reflection coefficient of reflecting antenna with Fig. 3 array antenna of dipoles.
Fig. 3 gives in being originally embodied as, and the soldering surface mounted resistance of port of the array antenna of dipoles is as the suction ripple rate of wave absorbing device.Can be seen that and be all capable of well inhaling ripple within the scope of 3.79GHz-11.79GHz.The absorption of 100% can be realized in some band limits.
Those of ordinary skill in the art is it will be appreciated that embodiment described here is to aid in reader understanding's principles of the invention, it should be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete deformation and combination without departing from the present invention according to these technology disclosed by the invention enlightenment, and these deformation and combination remain in protection scope of the present invention.
Claims (3)
1. the ultra broadband wave absorbing device based on resistor loaded, including dipole antenna array (1), medium substrate (2), the plastic screw (4) of metal floor (3) and connection dipole antenna array and metal floor, it is characterized in that: described dipole antenna array (1) is to be formed by doublet unit (11) arrangement being printed on the upper periodic arrangement of single-layer medium substrate (2), the solder joint at Chip-R (12) two ends is respectively welded in doublet unit (11) two-arm, the number of concrete doublet unit can be determined according to the spatial dimension of required suction ripple；Respectively it is drilled with for positioning fixing four substrate through-hole (21) and four floor through holes (31) at the medium substrate (2) of printed dipole antenna array and four angles place of metal floor (3)；Described substrate through-hole (21) and floor through hole (31) diameter are identical, and are fixed up by four described plastic screws (4) connections.
2. a kind of ultra broadband wave absorbing device based on resistor loaded according to claim 1, it is characterized in that: described doublet unit (11) is to be made up of the copper sheet being printed on dielectric substrate (2) like butterfly's wing, and the shape size of each cellular construction is duplicate；Chip-R (12) is as main dissipative cell, and its resistance is adjusted according to the band limits of required suction ripple.
3. a kind of ultra broadband wave absorbing device based on resistor loaded according to claim 1, it is characterized in that: regulate described plastic screw (4) length, the distance between metal floor (3) and the array antenna of dipoles (1) can be changed, and then realize inhaling in different frequency range scope difference the change of ripple rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220687.9A CN105811119A (en) | 2016-04-11 | 2016-04-11 | Ultra wideband wave absorber based on resistance loading |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220687.9A CN105811119A (en) | 2016-04-11 | 2016-04-11 | Ultra wideband wave absorber based on resistance loading |
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| CN105811119A true CN105811119A (en) | 2016-07-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785477A (en) * | 2017-03-18 | 2017-05-31 | 电子科技大学 | A kind of double-frequency broadband wave absorbing device |
| CN107181056A (en) * | 2017-05-16 | 2017-09-19 | 叶云裳 | A kind of microwave attenuation type high stable phase, high-precision GNSS measurement type antenna and equipment |
| CN108598702A (en) * | 2018-04-23 | 2018-09-28 | 中国电子科技集团公司第二十九研究所 | A kind of ultra wide band low profile antenna array structure |
| CN113067139A (en) * | 2021-03-24 | 2021-07-02 | 电子科技大学 | Low-scattering ultra-wideband conformal phased array based on aperiodic distributed resistance loading |
| CN114204279A (en) * | 2021-12-14 | 2022-03-18 | 中南大学 | Resistance loading quad ring ultra wide band absorbing structure |
-
2016
- 2016-04-11 CN CN201610220687.9A patent/CN105811119A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785477A (en) * | 2017-03-18 | 2017-05-31 | 电子科技大学 | A kind of double-frequency broadband wave absorbing device |
| CN107181056A (en) * | 2017-05-16 | 2017-09-19 | 叶云裳 | A kind of microwave attenuation type high stable phase, high-precision GNSS measurement type antenna and equipment |
| CN108598702A (en) * | 2018-04-23 | 2018-09-28 | 中国电子科技集团公司第二十九研究所 | A kind of ultra wide band low profile antenna array structure |
| CN108598702B (en) * | 2018-04-23 | 2020-12-08 | 中国电子科技集团公司第二十九研究所 | Ultra-wideband low-profile antenna array structure |
| CN113067139A (en) * | 2021-03-24 | 2021-07-02 | 电子科技大学 | Low-scattering ultra-wideband conformal phased array based on aperiodic distributed resistance loading |
| CN113067139B (en) * | 2021-03-24 | 2021-10-22 | 电子科技大学 | Low-scattering ultra-wideband conformal phased array based on aperiodic distributed resistance loading |
| CN114204279A (en) * | 2021-12-14 | 2022-03-18 | 中南大学 | Resistance loading quad ring ultra wide band absorbing structure |
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Application publication date: 20160727 |
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