A kind of saturating infrared radiation microstrip antenna based on random metallic mesh
Technical field
A kind of saturating infrared radiation microstrip antenna based on random metallic mesh belongs to bimodulus complex probe and recognition technology.
Background technology
Infrared imagery technique has high sensitivity, for the target under complex background, has higher resolution capability, no matter all can provide high-resolution imaging round the clock.But infrared imagery technique operating distance is closer, be subject to the impacts such as dense fog, dense smoke, can not all weather operations, and driftlessness range information.The advantage such as Active Radar has high, round-the-clock, the penetrable smog of angle precision, can find range.Infrared imaging is combined with adaptable with Active Radar, have the accurate stationkeeping ability of fast target, the identification of target under adverse circumstances, classification capacity, and all-weather capability and antijamming capability, can improve the precision of detection and identify greatly.All very pay attention at present the development of Active Radar/infrared imaging complex technique both at home and abroad.
Active Radar/infrared imaging complex form mainly contains two kinds of forms: a kind of mode is to adopt radar sensor and infrared image sensor to divide platform to install, be called a minute bore technology, the advantage of dividing bore structure is technology maturation, realizes simply, greatest drawback is that 2 detectors must be by space coordinate conversion and time calibration, increased the complexity of system signal processing and servo follower, be difficult to realize truly compound, volume and quality are larger in addition.Another kind is the mode that adopts radar receiver and the coaxial installation of infrared remote receiver, is called common bore technology.The operation principle of coaxial installation compound sensor is: microwave signal can directly be passed from the reflecting surface of transmissive microwave reflection infrared waves.After infrared signal is reflected by large reflecting surface, then carry out secondary reflection through the little reflecting surface of forefront, the infrared image sensor of drawing the plate aerial rear in hole in the middle of being finally positioned at receives.Bore structurally has the advantages such as simple in structure, volume is little, quality is light with respect to a minute bore altogether, is adapted under space requirement exacting terms applying, and can also realize in addition the accuracy registration of 2 sensing datas, for composite information, processes and reduces error.
In common bore complex form, because plate aerial carries out the processing of Liao Tao hole in order to see through infrared signal, the performance of plate aerial is deteriorated significantly.If can solution never draw hole processing to plate aerial, and still can make can be received by Infrared Detectors in infrared signal, invent a kind of infrared microstrip antenna, will greatly improve the precision of Active Radar/infrared imaging complex probe identification.
A kind of optical clear microstrip antenna announced in the 4th volume of " the Antennas and Propagation Society International Symposium " of 1991 " Feasibility study of optically transparent microstrip patch antenna " literary composition, its principle is to adopt transparent conductive film material to form radiation patch and the ground plate of antenna, medium substrate also adopts transparent material, this antenna has transparent characteristic, but the preparation of its transparent conductive film is comparatively expensive, and the conductance of transparent conductive film is lower, cause gain and the efficiency of antenna all lower.
No. 20 " Dichroic Dual-band Microstrip Array " literary composition of 1986 " Electronics Letters " the 22nd volume, No. 2 " Microstrip Window Array " literary composition of 1988 " Electronics Letters " the 24th volume, another kind of transparent microstrip antenna introduced in " 7th International Conference on Antennas and Propagation Proceedings " the 1st volume " See-through Microstrip Antennas Constructed on A Transparent Substrate " in 1991 and No. 6 " Meshed Patch Antennas " literary composition of " IEEE Transactions on Antennas and Propagation " the 52nd volume in 2004, its principle is to adopt grid metallic mesh structure as radiating layer and the metal level of microstrip antenna, medium substrate adopts transparent material, realized the transparence of antenna.Yet because senior diffraction energy of grid metallic mesh mainly concentrates on mutually perpendicular diaxon, can cause serious bothering to the infrared imaging system at antenna rear, reduce the quality of infrared imaging.
Summary of the invention
In order to address the above problem, the present invention has designed a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, this antenna has the advantage that infrared optics transmitance is high, senior diffraction energy of transmitted light is evenly distributed, and then the even blur-free imaging of the infrared optics imaging system that makes antenna rear.
The object of the present invention is achieved like this:
A saturating infrared radiation microstrip antenna for random metallic mesh, comprises dielectric substrate, is pasted on the microband paste of dielectric substrate upper surface, is pasted on the ground plate of dielectric substrate lower surface, connects the feeder line of microband paste; Described dielectric substrate is made by saturating infrared radiant material, and described microband paste is random metallic mesh, and described ground plate is random metallic mesh.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, is provided with First Transition adhesive linkage between described dielectric substrate and microband paste.
Described First Transition adhesive linkage is made by chromium or titanium.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, is provided with the second transition adhesive linkage between described dielectric substrate and ground plate.
The second described transition adhesive linkage is made by chromium or titanium.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, described dielectric substrate one or more materials in monocrystalline High Resistivity Si, sapphire, magnesium fluoride, spinelle, ALON, ZnS are made; Described microband paste one or more materials in gold, silver, copper, aluminium are made; Described ground plate one or more materials in gold, silver, copper, aluminium are made.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, the sectional view of described microband paste along continuous straight runs is rectangle, circle, trapezoidal, E type, triangle or C shape.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, the thickness of described microband paste is not less than 200nm.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, described microband paste edge is surrounded by metal embracing layer, and described metal embracing layer width is greater than the random metallic mesh grid line width that forms microband paste.
Above-mentioned a kind of saturating infrared radiation microstrip antenna based on random metallic mesh, the average diameter that forms the random metallic mesh of microband paste is less than 0.1 times of resonance wavelength.
Owing to the present invention is based on the saturating infrared radiation microstrip antenna of random metallic mesh, dielectric substrate is made by saturating infrared radiant material, and microband paste is random metallic mesh, and ground plate is random metallic mesh; This design makes this antenna have the advantage that infrared optics transmitance is high, senior diffraction energy of transmitted light is evenly distributed, and then the even blur-free imaging of the infrared optics imaging system that makes antenna rear.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the saturating infrared radiation microstrip antenna of the present invention specific embodiment one.
Fig. 2 is the vertical view of the saturating infrared radiation microstrip antenna of the present invention specific embodiment one.
Fig. 3 is the cross sectional representation of the saturating infrared radiation microstrip antenna of the present invention specific embodiment two.
Fig. 4 is the vertical view of the saturating infrared radiation microstrip antenna of the present invention specific embodiment two.
In figure: 1 dielectric substrate, 2 microband pastes, 3 ground plates, 41 First Transition adhesive linkages, 42 second transition adhesive linkages, 5 metal embracing layers, 6 feeder lines.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described in further detail.
Specific embodiment one
The saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment, as shown in Figure 1, vertical view as shown in Figure 2 for cross sectional representation.This antenna comprises dielectric substrate 1, and the microband paste 2 that the sectional view that is pasted on the along continuous straight runs of dielectric substrate 1 upper surface is rectangle is pasted on the ground plate 3 of dielectric substrate 1 lower surface, connects the feeder line 6 of microband paste 2; Described dielectric substrate 1 is made by saturating infrared radiant material, and described microband paste 2 is that average diameter 200 μ m, thickness are the random metallic mesh of 5 μ m, and described ground plate 3 is that average diameter 200 μ m, thickness are the random metallic mesh of 5 μ m.Be specially: dielectric substrate 1 is preferably formed higher than 80% fabricated from sapphire by transmitance in 3 ~ 5 μ m infrared bands, and owing to seeing through more infrared optics signal, the optical imaging system that is beneficial to antenna rear receives enough optical signallings, carries out high-resolution imaging; Described microband paste 2 and ground plate 3 are made by copper, not only have stronger conductive capability, guarantee the performance of antenna, and than the higher metal of other conductivity, have cost-saving advantage.
The saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment, is provided with First Transition adhesive linkage 41 between described dielectric substrate 1 and microband paste 2, is provided with the second transition adhesive linkage 42 between described dielectric substrate 1 and ground plate 3; First Transition adhesive linkage 41 and the second transition adhesive linkage 42 are made by titanium.Titanium has increased the adhesive force between dielectric substrate 1 and microband paste 2, dielectric substrate 1 and ground plate 3, is conducive to improve antenna resistance to overturning.
The resonance wavelength of the saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment is 3mm, 0.1 times of the not enough resonance wavelength of average diameter of the random metallic mesh of selecting, makes the microband paste 2 consisting of random wire netting still possess desirable radianting capacity.
Specific embodiment two
The saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment, as shown in Figure 3, vertical view as shown in Figure 4 for cross sectional representation.This antenna comprises dielectric substrate 1, and the sectional view that is pasted on the along continuous straight runs of dielectric substrate 1 upper surface is circular microband paste 2, is pasted on the ground plate 3 of dielectric substrate 1 lower surface, connects the feeder line 6 of microband paste 2; Described dielectric substrate 1 is made by saturating infrared radiant material, and described microband paste 2 is that average diameter 200 μ m, thickness are the random metallic mesh of 5 μ m, and described ground plate 3 is that average diameter 200 μ m, thickness are the random metallic mesh of 5 μ m.Be specially: dielectric substrate 1 is preferably made higher than 70% ZnS by transmitance in 8 ~ 13 μ m infrared bands, and owing to seeing through more infrared optics signal, the optical imaging system that is beneficial to antenna rear receives enough optical signallings, carries out high-resolution imaging; Described microband paste 2 and ground plate 3 are made by gold, and selecting thickness is the random metallic mesh of 5 μ m, makes it approach DC conductivity, can bring into play to the full extent its conductive capability, to guarantee the optimum performance of antenna.
The saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment, described microband paste 2 edges are surrounded by metal embracing layer 5, and described metal embracing layer 5 width are greater than the random metallic mesh grid line width that forms microband paste 2; The thickness of described metal embracing layer 5 is 500 μ m, stable to guarantee the marginal texture of microband paste 2.
The resonance wavelength of the saturating infrared radiation microstrip antenna based on random metallic mesh of the present embodiment is 3mm, 0.1 times of the not enough resonance wavelength of average diameter of the random metallic mesh of selecting, makes the microband paste 2 consisting of random wire netting still possess desirable radianting capacity.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn structural change or the method improvement of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.