Introduction to electrical_engineering_from_roy_2009

Electrical Engineering

Electrical EngineeringElectrical Engineering

Electrical Engineering Overview DEPARTMENT OF ELECTRICAL

Wireless EEG system with internet/cell

phone /GPS data transfer Capability

Wireless EEG system with internet/cell

phone /GPS data transfer Capability


� Why does the world need electrical engineers?

There are many challenges in facing the world for

sustainable and enhanced quality of life:

� Transportation

Why does the world need electrical engineers?

Electrical Engineering Overview

� Transportation

� Energy

� Communication

� Medicine

� Housing

2


Why does the world need electrical engineers?

Electrical Engineers are needed for

creating electrical and electronic

solutions to these challenges!


For example…..

3


Transportation

Power Semiconductors

and energy storage

technology – Plug-in

Hybrid Electric Vehicles

(IEEE Spectrum May 2008)



4


Energy: Photovoltaic Materials


Renewable Energy –

Solar Power from

Photovoltaic Materials

Wind Power from

Generators

(IEEE Spectrum, August 2008)

5


Communication

Integrated Circuits and RF/Microwave Electronics

Apple

iPHONEiPHONE


iPHONEiPHONE

(IEEE Spectrum October 2007)

6


Medical Technologies

Implantable radiation

sensors to improve

cancer therapy

Electromagnetic imaging


(IEE Spectrum June 2008)

7


Housing

Electronic Systems:

� energy management

� Telecommunications

� security


� security

� entertainment


8


What can you do as an electrical engineering student?

� Start designing and building electronic systems!



� Start designing and building electronic systems!

For example…

9


Razor-Lazer Music Transmitter

Designed and Built by Students Eric A. DeCuir Jr. and David Fryauf

Electrical Engineering Overview 10

••Project Goal:Project Goal:

•Transmit stereo music over a laser beam to a remote stereo receiver

••How it works:How it works:

•MP3 player outputs varying electrical signal from mini headphone jack ��this electrical

signal is converted into amplitude modulated 635nm laser light via an audio transformer

��silicon phototransistor converts modulated laser light back into varying electrical

signal�� transducer (speaker) converts electrical energy back into sound by compressing

the air in front of a moving cone creating what our ear interprets as sound.


Razor-Lazer Music Transmitter

Lasers Silicon

Music out

3V 9VAudio transformer (1000/8)

LED*


Lasers Silicon photodiodes

Music in

3V 9V

Audio transformer (1000/8)

LED*

* LED protects laser diode from voltage spikes


�� Electrical engineers have the opportunity of:Electrical engineers have the opportunity of:

-- Advancing the state of the art in any of theAdvancing the state of the art in any of the

above fieldsabove fields

-- Having a very rewarding professional careerHaving a very rewarding professional career



-- Having a very rewarding professional careerHaving a very rewarding professional career

-- Average entry salary of $56,512Average entry salary of $56,512

-- Entering the job market at the right timeEntering the job market at the right time

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•• Texas Instruments, National Semiconductor, Micron, Texas Instruments, National Semiconductor, Micron,

IntelIntel

•• National Labs (Sandia, NREL, …)National Labs (Sandia, NREL, …)

•• Government (NSA, Pine Bluff Arsenal) Government (NSA, Pine Bluff Arsenal)

SWEPCO (AEP), SPP, OG&ESWEPCO (AEP), SPP, OG&E

EE Employers


•• SWEPCO (AEP), SPP, OG&ESWEPCO (AEP), SPP, OG&E

•• Northrop Grumman, RaytheonNorthrop Grumman, Raytheon

•• Small BusinessesSmall Businesses

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�� 19 Faculty Members19 Faculty Members

�� Fellows of the Institute of Electrical and Electronics Fellows of the Institute of Electrical and Electronics

EngineeringEngineering

Distinguished Professor Samir El-Ghazaly

Professor Len Schaper

�� Fellows of Other InstitutesFellows of Other Institutes

Professor Simon Ang

EE Department


Professor Simon Ang

Distinguished Professor Vasu Varadan

Distinguished Professor Vijay Varadan

�� Dr. Samir ElDr. Samir El--Ghazaly (elGhazaly ([email protected])[email protected])

Department Head

3217 Bell Engineering

�� Dr. Juan Carlos Balda ([email protected])Dr. Juan Carlos Balda ([email protected])

Associate Department Head

3217 Bell Engineering

14


Many opportunities to develop leadership and practical

engineering experience:

• IEEE

• HKN

Student Activities


• HKN

• IMAPS

• IEEE CPMT

• Solar Boat (Annual Solar Splash Competition)

15


� The Department has dedicated more than

$55K in scholarship funds for the 2008-2009

FEP class.

� Several scholarships will be available for top

EE Scholarships


� Several scholarships will be available for top

students, typically $1000 to $2000 per year

• Up to 3 years provided that the student

maintains required academic standards.

16


EE faculty members normally provide opportunities for

undergraduate to engage in research work at their

laboratories.

These opportunities not only enhance your

EE Undergrad Research


These opportunities not only enhance your

undergraduate learning experience but:

(1) you could use this work up to 6 hours of ELEG 6 hours of ELEG

technical electivestechnical electives, and

(2) Many cases you are areare paid for conducting paid for conducting

research!research!

17


Dr. Simon Dr. Simon Ang’sAng’s ResearchResearchELEG 2113ELEG 2113

Brain Probes and Sensors

E-coli bacteria detection

e-coli

Olfactory bulb recording in rat


Microsystems

Microthruster for

micro spacecraftNano-Spring

Nano-Electrical Contact


Medical ImagingMedical Imaging

Microwave Techniques for Breast CancerMicrowave Techniques for Breast CancerDr. Magda ElDr. Magda El--ShenaweeShenaweeELEG 3133 ELEG 3133 –– ELEG 3703ELEG 3703

TransmittingTransmittingAntennaAntenna

ReceivingReceivingAntennaAntenna

BreastBreastTumorTumor


Radar SystemRadar System

Wave penetration Wave penetration ∝ 1/(frequency, tissue conductivity)1/(frequency, tissue conductivity)

High frequency waveHigh frequency wave

Low frequency waveLow frequency wave

Not goodNot good

GoodGood

GoodGood

Not goodNot good


Semiconductor NanostructuresSemiconductor NanostructuresDr. Omar ManasrehDr. Omar Manasreh

ELEG 3213ELEG 3213

To deep space applications


From mine detection using giant rats

To 15 or more color detection systems using lighter weight and

smaller size satellites12 11 10 9 8

800 900 1000 1100 1200 1300 1400

0

1x103

2x103

3x103

4x103

5x103

Wavelength (µm)

VB

=0.6 V

Pho

tore

spon

se (

arb

it. u

nit

s)

Wavenumber (cm-1

)

T=7.0K VB

=2.0 VSample No. SC-QWIP

bottom Stack GaAs/Al0.09

Ga0.91

As

Multi-Color Focal Plane Arrays Infrared Detectors Based on

Semiconductor Nanostructures

Nanocrystals


MixedMixed--Signal ApplicationsSignal ApplicationsDr. Alan MantoothDr. Alan Mantooth

ELEG 3223ELEG 3223



Smart Vest with CNT NanoSmart Vest with CNT Nano--Fibers and Fibers and SensorsSensors

Dr. Vijay VaradanDr. Vijay Varadan

Aligned multiwalled carbon

nanotubes

Vegus nerve stimulator


Wireless smart vest for ECG, EKG, Respiration etc., and for blood flow , oxygen and viscosity of blood measurement


What’s in your cell phone?What’s in your cell phone?Dr. Len SchaperDr. Len Schaper

ELEG 3913ELEG 3913


There may be only 10 10 –– 15 integrated circuits15 integrated circuits on both sides of a cell phone printed circuit board, but several hundred passive componentshundred passive components(resistors and capacitors) highlighted in yellow.

Research work at UAResearch work at UA is finding manufacturing processes to build these passive components on a layer .002” thick within the circuit board, freeing up space on the front and back of the board for more ICs and freeing up space on the front and back of the board for more ICs and additional functionsadditional functions.

In cell phones, Thin is In!


Embedded Systems at UAEmbedded Systems at UADr. Scott SmithDr. Scott Smith

ELEG 2903, ELEG 2913ELEG 2903, ELEG 2913

� Embedded systems are ubiquitous in our daily lives

• e.g. cell phone, MP3 player, PDA, GPS receiver, video game systems

Bay Area Rapid Transit

(BART) Train Control System

Electric Wheelchair Capable of

Autonomously Traversing Stairs

Fishing System for Tetraplegics



Radio Frequency Identification (RFID)Radio Frequency Identification (RFID)Dr. Kazem SohrabyDr. Kazem Sohraby

ELEG 3123, ELEG 3133ELEG 3123, ELEG 3133


Main Functions• Reader-to-Tag • Tag-to-Reader• Reader-to-Server • Server-to-Reader

Basic Operations to Identify Tags

RFID System Architecture


Microwave & Optics Laboratory for Imaging & Characterization

Dr. Vasundara VaradanDr. Vasundara Varadan

Research Areas ApplicationsNegative Property MW Materials Collision Avoidance Automotive Radars, Stealth Materials, Cloaks for ‘Invisibility”, LTCC fabrication of metamaterialsBroadband MW Characterization 5-110 GHz, -40°C-1500°C, MW ceramics, biological tissues, phantomsMW Imaging Early detection of Breast CancerNon-Destructive Evaluation (NDE) Non-contact security screening for detection of objects concealed

under clothes & footwear - protects privacy of airport passengers!!Embedded Sensor Systems Self-contained, compact point of care medical monitoring systems - cough, pulse, blood pressure, respiration


- cough, pulse, blood pressure, respiration

Fully automated computer controlledimaging, scanning, characterization.

MW characterization of critical MW devices,antenna substrates, space tiles, shielding& radar absorbing materials, normal andcancerous breast tissue phantoms, etc.

Excellent opportunities for undergraduate research, international summer researchprograms


Power Electronics and Power SystemsPower Electronics and Power SystemsDr. Juan Carlos Balda, Dr. Juan Carlos Balda,

Dr. Alan Mantooth, Dr. Roy McCannDr. Alan Mantooth, Dr. Roy McCann


www.climatetechnology.gov/library/2005/tech-options/tor2005-135.pdf


QUESTIONS?QUESTIONS?

www.ee.uark.eduwww.ee.uark.edu

EE Contact


www.ee.uark.eduwww.ee.uark.edu

--or or googlegoogle “electrical “electrical engineering university of engineering university of

arkansasarkansas””

28


Freshman Year

1 GNEG 1111 Intro to Engineering I 3 GNEG 1121 Intro to Engineering II

3 ENGL 1013 Composition I 4 MATH 2564 Calculus II

3 CHEM 1103 University Chemistry I 4 XXXX XXX4 Freshman Science Elective

4 PHYS 2054 University Physics I 3 XXXX XXX3 University Core Elective

4 MATH 2554 Calculus I 3 ENGL 1023 Technical Composition II

15 semester hours 15 semester hours

Sophomore Year


Sophomore Year

3 ELEG 2903 Digital Design I 3 CSCE 2003 Programming Foundations I

0 ELEG 2900L Digital Design I Lab 1 CSCE 2001L Prog. Found. I Lab

3 ELEG 2103 Electric Circuits I 3 ELEG 2113 Electric Circuits II

1 ELEG 2101L Electric Circuits I Lab 1 ELEG 2111L Electric Circuits II Lab

4 MATH 2574 Calculus III 3 ELEG 2913 Digital Design II

4 XXXX XXX4 Sophomore Science Elective 0 ELEG 2910L Digital Design II Lab

4 MATH 3404 Differential Equations

3 History Government Requirement



Junior Year

3 ELEG 3123 Systems and Signals 3 ELEG 3223 Electronics II

1 ELEG 3121L System & Signal Lab 1 ELEG 3221L Electronics II Lab

3 ELEG 3213 Electronics I 3 ELEG 3303 Energy Conversion

1 ELEG 3211L Electronics I Lab 1 ELEG 3301L Energy Conversion Lab

3 ELEG 3923 Microprocessor Design 3 ELEG 3703 Electromagnetics

0 ELEG 3920L Microprocessor Design Lab 3 Humanities/Social Science Elective

3 CSCE 2013 Programming Foundations II

1 CSCE 2011L Prog. Foundations II Lab


1 CSCE 2011L Prog. Foundations II Lab

3 Math/Science elective


Senior Year

1 ELEG 4061 EE Design I 1 ELEG 4071 EE Design II

3 ELEG 4143 Stochastic Signal Processing 6 Electrical Eng Technical Elective

3 Electrical Engineering Technical Elective 3 Technical Elective

3 Engineering Science Elective 3 Upper-level humanities/Social Science Elective

3 Technical Elective 3 Humanities/Social Science Elective

3 Upper-level Hum/Social Science Elective


Introduction to electrical_engineering_from_roy_2009

Technology

electrical engineering

electrical engineering

electrical energy

institute of electrical

bell engineering

generators ieee spectrum

stereo music

ogeswepco aep