There are two cylinders with different radius connected to each other. The excitation signal is located at the far-end of the bigger cylinder and there is no ground plane in this structure?
Could you please explain in detail the geometry of this dipole? It's a little confusing to me when ypou say that there is no ground plane and you showa ground board.
Actually it is equivalent model for other circuit. You can consider it as rectangular shape (4cm,10cm) extended with another small rectangular shape (4cm, 50cm) at its end. The excitation source is located at far-end of the rectangular where it can drive these two shapes? Thanks