1. 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
2Department of Aerospace Engineering
Texas A&M University, College Station, TX
3Department of Mechanical Engineering
Texas A&M University, College Station, TX
This work was sponsored in part by AFOSR grant # FA and the NASA funded Space Engineering Institute at Texas A&M University

2. Project Team and Acknowledgements
Prof. Gregory H. Huff
Prof. James G. Boyd
Dr. Patrick Fink
Dr. Tim Kennedy
Dr. Phong Ngo
Magda Lagoudas
Stephen A. Long
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

3. Motivation
New materials- centric approach provides continuous tunability
Biasing and control lines removed from plane of antenna
SOA antenna reconfiguration uses RF MEMS and solid state
Complexity can result from biasing and control
Support NASA JSC on software defined radios with adaptive and reconfigurable antenna systems
Get refrences

4. 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
Need more information 4

5. Dielectric Constant Testing

6. Effective Properties Simulation
Use MATLAB to generate random 3-D particles
Use COMSOL for effective property simulations
Random, periodic particle distribution
Oil
BSTO
Surfactant
Punctuation on last bullet
Delete first bullet

7. 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

8. Microstrip Cross-Dipole: Experimental Model (ISM Band Design)
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

9. Analytical Modeling

10. Gap Analytical Modeling

11. Capillary Integration
Adapter
Gap
Channel
Make title slide the same as other slides
Inflow/Outflow

12. LabVIEW Integration Team Goals and Progress
Control speed of peristaltic pump with LabVIEW
Control network analyzer and its components with LabVIEW
Implement a closed-loop system
Progress
Downloaded drivers for NI module to LabVIEW connection
Pump runs without LabVIEW or module at a maximum velocity of ml/min with water
Currently working on a program for the PNA
USB
USB
Analog
PNA
NI Module
Peristaltic Pump

13. Clockwise roller rotation
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
Tube ID - higher flow rate with larger ID
Length of inner tube- higher flow rate with longer length
Roller RPM - higher flow rate with higher RPM
Rotary peristaltic pump action
360 Degree peristaltic pump
Clockwise roller rotation

14. Measured Data No Radiation
Integration before this, then add simulated. Need performance metrics slide. Need to add in radiation pattern results in these 14

15. Measured Data
Sim: Black
Meas: Red

16. Data
Sim: Black
Meas: Red

17. Data
Sim: Black
Meas: Red

18. 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
The gnuradio software analyzes the signal that the antenna is sending or receiving
The software modifies the antenna based on the bit error rate
Ways to Reconfigure the Antenna
Change the Polarization
Change concentration of particles or liquids
Change the power of the antenna

19. Software controls the USRP and other controllers
Gnuradio
Software controls the USRP and other controllers
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
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

20. 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
2Department of Aerospace Engineering
Texas A&M University, College Station, TX
3Department of Mechanical Engineering
Texas A&M University, College Station, TX
This work was sponsored in part by AFOSR grant # FA and the NASA funded Space Engineering Institute at Texas A&M University