Transcript Project Title - Texas A&M University

Design of a Polarization Reconfigurable
Crossed-Dipole Antenna
Using Surface Integrated Fluidic Loading
Mechanisms
1S.
Goldberger, 2F. Drummond, 1J. Barrera, 2S. Davis, 1J. Edelen, 1 M. Geppert,
1Y. Judie, 1Q. Manley, 2C. Peters, 3S. Smith, and 1G. H. Huff
1Electromagnetics
and Microwave Laboratory, Department of Electrical and Computer Engineering
Texas A&M University, College Station, TX 77843-3128
2Department of Aerospace Engineering
Texas A&M University, College Station, TX 77843-3118
3Department of Mechanical Engineering
Texas A&M University, College Station, TX 77843-3123
Email: [email protected]
This work was sponsored in part by AFOSR grant # FA9550-08-1-0329 and the
NASA funded Space Engineering Institute at Texas A&M University
Project Team and Acknowledgements
Prof. Gregory H. Huff
Dr. Phong Ngo
Prof. James G. Boyd
Magda Lagoudas
Dr. Patrick Fink
Stephen A. Long
Dr. Tim Kennedy
Second Row: Sean Goldberger, Stephen Davis, Frank Drummond,
Joel Barrera, and Michelle Geppert
Front Row: Quinn Manley, YaShavaun Judie, Jamie Edelen, Samantha Smith, and Cameron Peters
Motivation
www.nature.com
www.radantmems.com
www.tplinc.com

 SOA antenna
reconfiguration
 Support NASA JSC
uses RF MEMS
on software defined
and solid state
radios with adaptive


Complexity
can
and reconfigurable
result from biasing
antenna systems
and control
New materialscentric approach
provides continuous
tunability
Biasing and control
lines removed from
plane of antenna
Materials Team Goals
 Concerned with analyzing the fluid flowing through
the antenna
 Three major goals
– Determine effective properties for a random
particle distribution
– Model moving particles
– Design fluidic system
Dielectric Constant Testing
Effective Properties Simulation
 Use MATLAB to
generate random 3-D
particles
 Use COMSOL for
effective property
simulations
 Random, periodic
particle distribution
Oil
BSTO
Surfactant
Fluidic Simulation
•More realistic results than static FCC
lattice structure from last year
•Will be combined with random
particle distribution code
•Particle collisions
•Bunching
•Path through curve
Antenna Design
Microstrip Cross-Dipole: Experimental Model (ISM Band Design)
Switchable dual linearly polarized crossed dipole design with four electrokinetic coupled
microstrip gaps filled with volume fractions of magnetodielectric colloidal material in
liquid
Analytical Modeling
Gap Analytical Modeling
Capillary Integration
Gap
Channel
Inflow/Outflow
Adapter
LabVIEW Integration Team Goals and Progress
Goals
Progress
• Control speed of peristaltic
pump with LabVIEW
• Control network analyzer and
its components with LabVIEW
• Implement a closed-loop
system
USB
http://www.cpsc.gov/cpscpub/prerel/prhtml07/07267c.jpg
USB
•Downloaded drivers for NI
module to LabVIEW
connection
•Pump runs without
LabVIEW or module at a
maximum velocity of 0.45
ml/min with water
•Currently working on a
program for the PNA
Analog
PNA
NI Module
Peristaltic Pump
Peristaltic Pump
• Peristaltic pump - Positive displacement pump used
for pumping a variety of fluids
• Description - As the rotor turns, rollers attached to
the external circumference compress the flexible tube
forcing the fluid to move through the tube
Flow Rate
Variables
Rotary peristaltic pump action 360 Degree peristaltic pump
Clockwise
roller
rotation
http://upload.wikimedia.org/wikipedia/commons/2/2a/Howworksmin.gif
www.eccentricpumps.com
•Tube ID - higher flow
rate with larger ID
•Length of inner tubehigher flow rate with
longer length
•Roller RPM - higher
flow rate with higher
RPM
Measured Data
No
Radiation
Measured Data
Sim: Black
Meas: Red
Data
Sim: Black
Meas: Red
Data
Sim: Black
Meas: Red
Future Work – Software Defined Radio
Software Reconfigurable Antennas
•Analyzes the signal that the antenna is sending
or receiving
•Modifies the antenna based on the bit error rate
•Operating Frequency: 2.4GHz
Ways to Reconfigure the Antenna
•Change the Polarization
•Change concentration of particles or liquids
•Change the power of the antenna
Gnuradio
Software controls the USRP and other controllers
•The USRP
•Connects the antenna to the
computer
•Gives the antenna the signal to
send and receives the signal sent
•Performs analysis on signal
•Can be programmed
•Another Controller
•Controls circuits that control the
configuration of the antenna
•Gets a response from computer about
the transmitted signal
•Sends an electrical signal to a circuit
connected to the antenna to reconfigure it
Design of a Polarization Reconfigurable
Crossed-Dipole Antenna
Using Surface Integrated Fluidic Loading
Mechanisms
1S.
Goldberger, 2F. Drummond, 1J. Barrera, 2S. Davis, 1J. Edelen, 1 M. Geppert,
1Y. Judie, 1Q. Manley, 2C. Peters, 3S. Smith, and 1G. H. Huff
1Electromagnetics
and Microwave Laboratory, Department of Electrical and Computer Engineering
Texas A&M University, College Station, TX 77843-3128
2Department of Aerospace Engineering
Texas A&M University, College Station, TX 77843-3118
3Department of Mechanical Engineering
Texas A&M University, College Station, TX 77843-3123
Email: [email protected]
This work was sponsored in part by AFOSR grant # FA9550-08-1-0329 and the
NASA funded Space Engineering Institute at Texas A&M University