1. Reporting the Progress of the Joint Technical Actions Antenna/wire coupling in the near field A. Rubinstein (abraham.rubinstein@epfl.ch) EMC Group Swiss Federal Institute of Technology

3. The Problem 150 Ω5 cm 1 m ground plane

4. The Problem 150 Ω

5. The Problem 150 Ω

6. The Problem 150 Ω 30, 80 cm

7. The Problem 150 Ω 30, 80 cm

8. The Problem 150 Ω

9. The Problem 150 Ω

10. The Problem 150 Ω 5, 10 m

11. The Problem 150 Ω Infinite ground plane

12. Results using NEC

13. Finite ground plane About 12000 segments 8 minutes per iteration using 16 processors on a supercomputer!!!!!

14. Results using NEC

16. Three different polarizations

17. Three different heights Antenna moves vertically with wire

18. Three different heights, antenna fixed at original height

19. Conclusions Must use infinite ground plane with NEC. In this case, simulations take under 1 sec per iteration Post processing with NEC is long and hard The fact of changing the height of the wire produces changes that cannot be isolated from the fact that the connector to the ground becomes an important coupling device Results comparable to those obtained by the other partners