Optimization of Dielectric Substrate for a 7 T Radiative
Antenna: Role of Surface Waves
Ozlem Ipek1, J. J.W. Lagendijk1,
C.A.T. van den Berg1
1Radiotherapy, UMC Utrecht, Utrecht,
Netherlands
The radiative
antenna is optimized in terms of size and dielectric properties of the
substrate. The role of surface waves is studied as a function of the
thickness of the dielectric substrate and the relative electrical
permittivity. As a result, optimal in-coupling of RF signal is strongly
determined by the surface waves.
