cst microwave studio™ aplicações em · pdf file · 2011-04-19...
TRANSCRIPT
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CST MICROWAVE STUDIOCST MICROWAVE STUDIO™™ APLICAAPLICAÇÇÕES EMÕES EMDEFESADEFESA
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Startscreen
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CST Markets
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CST STUDIO SUITE™Products inside
DC kHz MHz GHz THz
CST PARTICLE STUDIO™
CST DESIGN STUDIO™
CST EM STUDIO™
CST MICROWAVE STUDIO®
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Absorvedores de microondas
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Materiais são ensaiados em laboratórios e dados alimentam o CST
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Frequência ondeS11 é minimizado
(absorção de energia):
Absorvedores de microondas
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Absorvedores de microondas
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Redes Dicróicas
Simula um célula dentro de uma rede infinita
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Sinal de 10GHz não atravessa a rede – para o resto do espectro a rede étransparente.
ARQUIVO - MOSTRAR
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Applications – Collection of Examples • Airplane & ship
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Surface Mesh on Airplane
• 26.4m x 26.6m x 7.7m 352λ x 355λ x 103λ at 4GHz• 780.000 unknowns, 1st order MLFMM• Plane wave illumination from front
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Surface Currents at 4GHz
• 26.4m x 26.6m x 7.7m 352λ x 355λ x 103λ at 4GHz• 780.000 unknowns, 1st order MLFMM• Plane wave illumination from front
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Surface Currents animation
• 26.4m x 26.6m x 7.7m 352λ x 355λ x 103λ at 4GHz• 780.000 unknowns, 1st order MLFMM• Plane wave illumination from front
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Airplane at 2 GHz
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Workflow Example: LightningStrike on an Airplane
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Import of Aircraft ModelAssign materials: Load from Material
Library or set manually
Scale model in order to get a quick training simulation
Import CAD-File of airplane
Units: m, MHz, sFrequency Range: 0–10 MHz
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Boundary Conditions and Background
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ExcitationPick nose Move WCS to nose
Define Current Port
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Discharge Channel
A resistance of 300 Ohm attached to the top plate was used to match the discharge channel in order to have a traveling lightning current
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Complete Model
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Monitor
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T-Solver Results
Input Signal: Double Exponential
Energy in Calculation Domain
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T-Solver Results
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Apache Helicopter
7.30m x 6.10m x 2.30m 25λ x 21λ x 8λ α 1 GHz140.000 Surface Mesh cells, 1st order MLFMM algorithmPlane wave ilumination from front
Surface currentsat 1 GHz
RCSmax = 33dBsm
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ARQUIVO - MOSTRAR
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Sistemas UWB – Ultra Wide Band
Tempo (ns)
Am
plitu
de (V
)
0 0.8 1.6 2.4 3.2 4 4.8 5.6 6.4-0.25
0
0.25
0.5
0.75
1
pulso de entrada (gerador e cabos)pulso de entrada retangular ideal
entrada
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Tempo (ns)
Am
plitu
de (V
)
6E-9 7E-9 8E-9 9E-9 1E-8 1.1E-8 1.2E-8 1.3E-8 1.4E-8 1.5E-8 1.6E-8-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
CST- pulso do geradorCST- pulso retangularIAE- experimental
saida
Sistemas UWB – Ultra Wide Band
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Tubos de microondas de alta potênciaVircator
Emissão das partículas
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Sinais output –Domínios tempo e frequência
Frequências da cavidade, excitadas pelo feixe de elétrons
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