MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

Analysis and design of ultrawide-band and high-power microwave Analysis and design of ultrawide-band and high-power microwave pulse interactions with electronic circuits and systemspulse interactions with electronic circuits and systems

GoalsGoals Understand and predict the effects of the Understand and predict the effects of the

electromagnetic threatelectromagnetic threat represented by represented by high power high power microwavemicrowave (HPM) and (HPM) and ultrawide-bandultrawide-band (UWB) (UWB) pulsespulses on on digital electronic systems found inside fixed or moving digital electronic systems found inside fixed or moving platforms.platforms.

Develop recommendations for performing field Develop recommendations for performing field tests/measurementstests/measurements

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

MURI ParticipantsMURI Participants

University of Illinois at ChicagoUniversity of Illinois at Chicago

Frequency Domain Electromagnetic Modeling, Fault tolerantFrequency Domain Electromagnetic Modeling, Fault tolerant

computing systems.computing systems.

P.L.E. Uslenghi, P.I.P.L.E. Uslenghi, P.I.

H-Y. D. Yang, S. Dutt, D. Erricolo.H-Y. D. Yang, S. Dutt, D. Erricolo.

Clemson UniversityClemson University

Generalized scattering matrices, Equivalent circuit models,Generalized scattering matrices, Equivalent circuit models,

non-linear circuit testing.non-linear circuit testing.

C. M. Butler,C. M. Butler, A. Q. Martin, M. A. Bridgewood, F. M. Tesche.A. Q. Martin, M. A. Bridgewood, F. M. Tesche.

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

MURI ParticipantsMURI Participants

University of HoustonUniversity of Houston

Integral equation methods, Fast Multipole Moment method.Integral equation methods, Fast Multipole Moment method.

D. R. Wilton, D. R. Jackson.D. R. Wilton, D. R. Jackson.

University of Illinois at Urbana-ChampaignUniversity of Illinois at Urbana-Champaign

Frequency and Time-domain electromagnetic modeling ofFrequency and Time-domain electromagnetic modeling of

circuit components, Hybrid electromagnetic/circuit solvers.circuit components, Hybrid electromagnetic/circuit solvers.

E. Michielssen, A. C. Cangellaris.E. Michielssen, A. C. Cangellaris.

University of MichiganUniversity of Michigan

Hybrid Finite Element Method, VLSI Design, VLSI TestingHybrid Finite Element Method, VLSI Design, VLSI Testing

VLSI Layout automation.VLSI Layout automation.

J. L. Volakis, V. V. Liepa, P. Mazumder.J. L. Volakis, V. V. Liepa, P. Mazumder.

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

IntroductionIntroductionThe high power electromagnetic pulse threatThe high power electromagnetic pulse threat

Pulser

External EM Source

(Impulse Radiating Antenna) Illuminated TargetHPEM Fields

E

H

•Nuclear electromagnetic pulse (NEMP)old, studied, understood

•New electromagnetic threatsultrawide-band (UWB) and narrow

bandhigh-power microwave (HPM)

pulses

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

MURI Research PlanMURI Research Plan

GoalGoal

Understand and predict the effects of an aggressor Understand and predict the effects of an aggressor signalsignal

into a complex system.into a complex system.

HPM/UWBsources

antennascracksaperturescables

propagationto interior

interaction withdigital circuits

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

MURI Research PlanMURI Research Plan

Technology ElementsTasks

Large-scale frequency domain analysisof HPM penetration and coupling into pieces

Time-domain analysis of HPM/UWBpenetration and coupling into pieces

Coupling between pieces with EM topology

Source and coupling path models forintegrated circuits and systems

Hybrid Finite Element Method,Fast multipole method in MomentMethod

Time-Domain Integral EquationMethod with Plane-waveTime-Domain Algorithm

Equivalent Circuit Models andGeneralized Scattering Matricesfor Pieces

Frequency- and Time-DomainElectromagnetic Modeling ofLinear Circuit Components

Volakis, Butler,Jackson, UslenghiWilton

Michielssen, Cangellaris,Wilton, Jackson

Tesche, ButlerMartin, Volakis

Cangellaris,Yang,Michielssen

Collaborators

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

MURI Research PlanMURI Research Plan

Technology ElementsTasks

HPM/UWB interaction with nonlinear and active devices

HPM/UWB Impact on DigitalCircuits and Computers:Fault Evaluation

Experiment and design of HPW/UWB impact on electronic systems

Transient Time-DomainNonlinear Circuit Analysis

Evaluation of the System Response and the Changeof Logic State

Nonlinear Circuit Testing andEvaluation of the Impact onsubsystems and systems

Collaborators

Cangellaris,Erricolo,Mazumder

Mazumder, Dutt,Tesche

Tesche, Liepa,BridgewoodUslenghi

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

Example of capabilities of our computational software toolsExample of capabilities of our computational software tools

30

-150

60

-120

90

-90

120

-60

150

-30

180 0

-30

-20

-10

0

Large scale calculation for antenna radiation mounted on a Global Hawk aircraftthat is 115ft wide x 44ft long.

Calculations

Measured

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

Example of capabilities of our computational software toolsExample of capabilities of our computational software tools

9 0 m ils

2 c m

5 .8 5 cm

r

r

slot array placed60mils below top surface of 90mils layer

slot array at 30milsbelow top of 90mils layer 9 0 m ils

absorber, jr

6 .4 5 cm

Antenna ofSpecified Pattern

MomentMethod Region

Physical Optics Region

J2P O M2

P O

J2MM

M2MM

J1MM

M1MM

J1P O

M1P O

r

r

x

y z

aρbρ

ab

Conformal array and frequencyselective surfaces

Broadband communication antenna

Antenna + RadomeBroadband radar array

MURI - University of Illinois at Chicago - P.I. Prof. Piergiorgio L.E. Uslenghi

Example of capabilities of our computational software toolsExample of capabilities of our computational software tools

Snapshot of currents on a VFY218aircraft illuminated by a pulse incidentfrom broadside

Snapshot of currents on a computer chassis with its ventilation slot illuminated by an external wave.