1. Enhancement of Tools for Design of Antennas for Mobile Devices 2003 Clemson SURE Program Presented By: Robert J. Loeven Advisor: Dr. Anthony Martin

2. Modern Mobile Device Antennas Very Small Multi-Band Used in Cell Phones, Wireless Laptops, etc. PIFA – Planar Inverted F-type Antenna

3. Project Goals Use MATLAB to model antenna structures and performance, using Makarov programs Antenna and EM Modeling, Sergey N. Makarov, John Wiley and Sons Inc. 2002 Alter Makarov programs to show more detail and enhance quality of output Use new programs to analyze antennas, specifically patch antennas designed for cell phones and wireless notebook connections

4. Triangular Surface-Patch Meshes and the Rao-Wilton-Glisson Basis Functions First requires a 3D “Mesh” antenna structure which can be created using MATLAB PDE Toolbox Plate Example

7. Equations Surface Currents – Current Interpolation

8. Bowtie Example to Demonstrate Color Modifications in RWG5.m and plotcurr5.m

9. Bowtie – RWG5 - Old vs. New

10. Bowtie Example – New Plotcurr5 Output

11. 3D Far-Field Patterns: Old Efield2.m

12. New Efield3D.m with Antenna and Transparency

13. Efield3D.m 3D Rotation

14. Simulated Dipole Frequency Sweep

15. Dipole Frequency Demonstration λ/2 (75MHz) λ (150MHz) 3λ/2 (225MHz) 2λ (300 MHz)

16. Patch Antenna Design Simulation

17. Frequency Sweep Results 500 MHz to 6 GHz

18. Current Distribution at 2 GHz

19. Patch Antenna E-Field

20. Patch E-field with Antenna Included

21. E-Shaped Patch Antenna Simulation

22. E-Shape Analysis

23. E-Shape Surface Currents

24. E-Shape 3D E-Field

25. E-Shape 3D with Antenna Included

26. Future Work Speed up code by using matrix interpolation Modify plotcurr5.m code to work in 3D Modify codes to allow for the inclusion of dielectric materials into the antennas Use program to simulate and study real world antenna designs