1 THINGS STUDENTS DO AT THE OSU ESL ERIC K. WALTON 2011 AMTA DENVER The Ohio State University ElectroScience Lab Electrical

1http://esl.eng.ohio-state.edu

THINGS STUDENTS DOAT THE OSU ESLERIC K. WALTON

2011 AMTA DENVER

The Ohio State University ElectroScience LabElectrical and Computer Engineering Dept.

Columbus, Ohio 43212-1191http://www.ece.osu.edu/~volakis

http://www.osu.edu/


ElectroScience is within theECE Dept. at OSU

(Prof. Yuan Zheng, Dept. Chair)• 51 Faculty members (No. 14 in size)• 900 Undergraduate students (OSU has 50,000 students)• 340 Graduate students (no. 15/16 in M.Sc./Ph.D

graduation) • $6.7 M instructional budget• $~17.5 M Research Expenditure in 2002-2003 (among top 4)

• Areas: RF and Electromagnetics, Solid State & Electronic Mat., Controls Intelligent Transportation, Mixed Signals, VLSI, Comm. Systems & Wireless, Computer Vision, Networking,

http://www.osu.edu/


UNDERGRAD TEAM(RADAR SENSOR TO DETECT IED’S)


EXAMPLES OF RECENT PROJECTS

WE ARE DEVELOPING A SATELLITE ANTENNA FOR A ROBOT SUBMARINE



WE MADE AN ANTENNA OUT OF PLASMA GAS(IT GLOWS IN THE DARK!)


EXAMPLES OF RECENT PROJECTSWE MADE THERMAL PICTURES OF THE HEAT PATTERNS ON THE BACK WINDOW OF AN AUTOMOBILE EATER GRID TURNED ON)


STATE OF THE ART COMPACT RANGE


INTERESTING INTERFEROMETER TARGETS

GLAUCOMA RESEARCH


VEHICLE ANTENNA TESTING



MATHEMATICAL MODELS OF AUTOMOBILE ANTENNAS


STUDENT PROJECTGENERATE PLANE WAVE IN “BOX”

UNDERGRAD


The ElectroScience Laboratory is a major Center of Excellence in the College of Engineering.

• Graduated over 325 Ph.Ds. and Over 500 M.Sc. Degrees• Graduate 17 Ph.Ds/M.Sc. degrees per year

________________________________________________________________________________________________________________

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Department of

Electrical Engineering


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NEW BUILDING (MOVED IN; SEP. 2011


STATE OF THE ARTCOMPACT RANGE


INTERESTING RADAR TEST TARGETS

SMALL

LARGE


STILLS FROM THROUGH WALL MOVIE


OPTICS AND MICROELECTRONICS


OSU-ESLAccurate analysis and measurement tools

Concealedsource


OSU-ESL Research Activity

RF Components Integrated RF, MEMS switches

On Board System Evaluation

Reconfigurable and Multifunctional RF antenna apertures,

RF on ceramics

Miniature sensor arrays

Printed Antennas and FSS

Antennas onShips and Structures

Radar Scatteringfrom airborne andground vehicles


OSU-ESL Research Activity

VinVout

HarmonicBalanceHB1

Order[1]=4Freq[1]=10.0 GHz

HARMONIC BALANCE

V_1ToneSRC6

Freq=10.0 GHzV=Vin V

ParamSweepSweep1

Step=1Stop=100Start=-10SimInstanceName[6]=SimInstanceName[5]=SimInstanceName[4]=SimInstanceName[3]=SimInstanceName[2]=SimInstanceName[1]="HB1"SweepVar="Pin"

PARAMETER SWEEP

VARVAR3

VGS=polar(0.2992*50*sqrt(2),-62.58)VDS=polar(0.4915*50*sqrt(2),141.58)Pin=0.

EqnVar

V_1ToneSRC5

Freq=9.5 GHzV=VDS mV

V_1ToneSRC4

Freq=9.5 GHzV=VGS mV

VARVAR2

Ang2=66.6667 opt{ 30 to 80 }L9=0.8 opt{ 0.3 to 3.0 }L8=3.0 opt{ 0.3 to 2.0 }L7=1.3 opt{ 0.3 to 2.0 }L6=3.4 opt{ 0.2 to 4.0 }L5=1.5 opt{ 0.2 to 5.0 }L4=2.8 opt{ 0.2 to 5.0 }

EqnVar

FET1_modelX1

21

Ref

MSUBMSub1

Rough=0 milTanD=0T=15.4 milHu=3.9e+034 milCond=1.0E+50Mur=1Er=9.7H=0.5 mm

MSub

V_DCSRC1Vdc=-0.5 V

MLINTL3

Mod=KirschningL=L3 mmW=0.315 mmSubst="MSub1"

MRSTUBStub3

Angle=Ang1L=L2 mmWi=0.315 mmSubst="MSub1"

MCROSCros1

W4=0.315 mmW3=0.315 mmW2=0.315 mmW1=0.315 mmSubst="MSub1"

MTEETee3

W3=0.315 mmW2=0.315 mmW1=0.315 mmSubst="MSub1"

MRSTUBStub1

Angle=50L=L1 mmWi=0.315 mmSubst="MSub1"

MLINTL6

Mod=KirschningL=0.5 mmW=0.315 mmSubst="MSub1"

CC4C=200.0 pF

MLINTL4

Mod=KirschningL=len4 mmW=0.315 mmSubst="MSub1"

MRSTUBStub2

Angle=50L=len5 mmWi=0.315 mmSubst="MSub1"

MLINTL5

Mod=KirschningL=0.8 mmW=0.315 mmSubst="MSub1" MTEE

Tee2


CC3C=C1n pF

MLINTL2


MLINTL1


RR2R=50 Ohm

MRSTUBStub5

Angle=Ang2L=L9 mmWi=0.315 mmSubst="MSub1"

MCROSCros2

W4=0.315 mmW3=0.315 mmW2=0.315 mmW1=0.315 mmSubst="MSub1"

MLINTL11


MLINTL10


CC2C=125.0 pF

VARVAR1

C1n=125len5=1.0len4=2.0len3=0.3len2=0.3L3=1.5L2=4.9L1=2.0Ang1=53

EqnVar

MLINTL7


MLINTL8


MRSTUBStub4

Angle=50L=L4 mmWi=0.315 mmSubst="MSub1"

V_DCSRC2Vdc=2.5 V

MTEETee5


CC5C=125.0 pF

MLINTL9

Mod=KirschningL=0.3 mmW=0.315 mmSubst="MSub1"

Single Tone Vgs from Table 1

Single Tone Vds from Table 1

Vin = 10mV

Vout

X

Y

Z X

Y

Z

Transistor

Gate Drain

Capacitor

Capacitor

Ex Plane wave Illumination

K: Direction of Propagation

MRI Imaging,

RF Interferencedown to device and digitalsystems logic

Wireless receivers

Wireless indoor Comm.

Multiphysics modeling and designfor RF MEMS switches

Biological


New Radar Technologies New radar technology to expand operationalfrequency to 100GHzand improve accuracy of futurecompact ranges.


Major effort inlarge scale simulations

CEM is an enabling capability in all RF systems design pursuits


k

0

k

1

(k)

0

k

Non-reciprocal media

New Materials for Antennasand RF Devices

• Multisciplinary Univ.Research Initiative (MURI)Program, started 1 July 2004

• Air Force and ONR support

3D crystal

3D crystal that ‘grow’ fields

Forward incidence(the frozen mode regime)

Large wave amplitude enhancement andwave slow down

MPC

Magnetic Photonic Crystals


Radiometric Systems

• Interference monitoring and suppression sensors

• flown onboard NASA's P-3 aircraft in the Japanese "Wakasa Bay" mission;

Pluto Probe Antenna


Indoor Wireless Propagation Models for3G Data Networks

Urban WirelessPropagation

Subsurface Radars

RFICs

Imaging Radars


Array multifuncationality/beam steering using RF MEMS Switch-Based Phase Shifter

L-Band (1-2 GHz)Communication X-Band (8-12.5 GHz)

Communication

Ground-Moving Target

Switch Package

Patch Antenna Array

RF MEMS SwitchReconfigurable Wireless

Systems/Sensors

• DC Contact RF MEMS Switches to be integrated with miniature antenna array to achieve a reconfigurable wireless system with wide frequency band capability (1 – 40 GHz)

• RF MEMS switches can achieve- low power consumption (10-100 nJ per

cycle) - very low insertion loss (~0.1dB)- high isolation (20~60dB)

signal

output

l/16

l/8

l/8 l/4

l/4

l/2


Wireless Sensors Combining Microfluidics, and RF Microsystems (with Prof. Hansford, Ohio State Univ, Materials Science Dept.)


QUESTIONS?

DR. ERIC K. WALTON

THE OHIO STATE UNIV.

ELECTROSCIENCE LAB.

1320 KINNEAR ROADCOLUMBUS, OH

[email protected]

(GO AHEAD; EMAIL ME QUESTIONS)

Study EM and see the world!

Documents

1 THINGS STUDENTS DO AT THE OSU ESL ERIC K. WALTON 2011 AMTA DENVER The Ohio State University ElectroScience Lab Electrical