1. Fractal Element Antenna Genetic Optimization Using a PC Cluster ACES Proceedings March 21, 2002 Monterey, CA

2. 03/21/2002ACES Conference Proceeding Fractal Development  Boston University: –Nuno Alves –William Crespo –Felipe Fernandes –Fabio Santana  Fractal Antenna Systems, INC. –Dr. Nathan Cohen and Dr. Robert Hohlfeld

3. 03/21/2002ACES Conference Proceeding Our Goal Decrease time of antenna design Using: - Fractal Antennas GA - Several inexpensive computers

4. 03/21/2002ACES Conference Proceeding Antenna Design Algorithms  Genetic Algorithm (G.A.) Genetic Algorithm (G.A.)  Numerical Electromagnetic Computation (N.E.C.) EMAG calculation Bottleneck of system Random Population Fitness Evaluation Select Parents New Population Crossover (Mating) Elite Population

5. 03/21/2002ACES Conference Proceeding Antenna Optimization  Problem: –Computationally Intensive –Time Consuming  Genetic Algorithms –Intrinsic Parallelism

6. 03/21/2002ACES Conference Proceeding Current Solutions…  Use of : –High End PC OR –Supercomputer  Cost of each: –$2000~ Up OR –$250,000~Up

7. 03/21/2002ACES Conference Proceeding Approaching the Problem  PC cluster implementation: –Hardware: 1 central node <100 slave nodes –Software: Linux (open source and free distribution) GA, NEC and FOM Error checking software

8. 03/21/2002ACES Conference Proceeding Project Diagram:

9. 03/21/2002ACES Conference Proceeding

10. 03/21/2002ACES Conference Proceeding

11. 03/21/2002ACES Conference Proceeding Results

12. 03/21/2002ACES Conference Proceeding Results

13. 03/21/2002ACES Conference Proceeding Conclusion  The use of PC Clusters is a viable and inexpensive alternative for Antenna Simulations