KatoAn
Newbie level 5
Hi, I got a problem about the guard ring of microstrip antennas.
In this figure, there is a guard ring around the dipole. It is designed to suppress the surface wave.
In the paper, the author expresses as: it helps to suppress the surface wave because the guard ring of width wr=lamda_g/2 functions as an open circuit to the surface wave. However, I don't understand why the guard ring function as an open circuit and thus the surface wave is suppressed.
Thanks all.
In this figure, there is a guard ring around the dipole. It is designed to suppress the surface wave.
In the paper, the author expresses as: it helps to suppress the surface wave because the guard ring of width wr=lamda_g/2 functions as an open circuit to the surface wave. However, I don't understand why the guard ring function as an open circuit and thus the surface wave is suppressed.
Thanks all.