RCS Comparisons

Goals of Antenna Design

High overall efficiency Large bandwidth High directivity Cheap, light weight, easy to fabricate

Efficiencies

Source

Transmission Lines

Antenna

E, H

( )21

radiated overall input

radiation accepted

radiation input

P e Pe P

e P

=

=

= − Γ

Gain = Efficiency × Directivity

Low gain

High gain

D = 1.5

Small dipole

D ~ 100

Reflector Antenna

Phased Array

Electronically Steer the Bean

Reflector Antenna

Reflector Antenna

“Dipole” Antenna

Dipole Antenna

Aegis Phased Array Radar ~10,000 radiating elements

ESA Phased Array for Broadcast Reception in Cars

Auto radars

Collision Avoidance Radars

Add-on Car Antennas

Why think about wireless systems in/on/near cars??

Cell phone antennas – more and more and more

Cell phone antennas - how you hold them matters

Wireless Health Monitoring

RFID Tags

IEEE Spectrum March 2007

Prediction: all products will have

some form of Embedded RFID Tag in the next few years

Human GI tract and a typical 430 MHz radio pill with lights, video camera and transmitting coil

Diameter = 1 cm, length = 3 cm

IEEE MTT Magazine, March 2002

Metamaterial-based Electrically small antennas

Free Space

A. Erentok and R. W. Ziolkowski, ECE, UA

EZ Magnetic EZ Electric

2D

3D

ka < 0.5 OE > 90%

A. Erentok and R. W. Ziolkowski, ECE, UA

Metamaterial-inspired Electrically small antennas

Inductor

2D Mag EZ Tested at 430 MHz

2D Elec EZ Tested at 1.37 GHz,

1.575 GHz

3D Mag EZ Tested at

1575 MHz 300 MHz 100 MHz

3D Elec Z Tested at 570 MHz 300 MHz

Z antenna Measured at NIST-Boulder

CLL1 CLL2

CLL3

UWB antenna Tri-band

Exclusion designs

Dual Band GPS L1-L2

High Gain

Metamaterial Antenna

For 60 GHz LAN

Actual 1.25 Gigabit/s Ethernet data was transmitted wirelessly between two computers using this high

gain antenna structure

Wireless Power Harvesting Near-field Induction

Coils – Power Transfer for

Battery Charging

Intelligent Highway

Far-field

SPS – Solar Power Satellite

Security and Surveillance

HFSS model of the Prepreg Antenna

Driven meander dipole

EAD NFRP element

Success in the Land of OZ

Laminated and cured final antenna

Antenna works !!

Pregtronics

Amplifier circuit works !!

Microchip works too !!

I think our antenna would look awesome integrated into this platform