Radiation performance evaluation of microstrip antenna covered with a dielectric layer

Abstract EN

In this paper, a comprehensive investigation of a microstrip antenna performance covered with a dielectric layer has been presented.

An aperture coupled antenna has been designed as a case study.

Antenna parameters have been evaluated with and without the presence of a dielectric layer with different thickness values.

Theoretical performance evaluation of this antenna for different cases, corresponding to the different dielectric thicknesses, has been assessed using the method of moment (MoM) based EM simulator IE3D, v.10.06.

A large number of dielectric thickness variations have been modeled, in an attempt to provide accurate antenna parameters response through this range.

Simulation results show that the antenna resonant frequency is reduced as the dielectric layer thickness is increased.

To maintain the resonant frequency, the antenna dimensions must be scaled down as a result of the existence of this layer.

In addition, results also show that, as the dielectric layer thickness is increased, the resulting antenna gain decreases.