**Reflection coefficient**

*Lorenzo Rubio Arjona*

This figure shows the magnitude of the reflection coefficient, also known in the literature as the Fresnel coefficient, in terms of the angle of incidence. This representation corresponds to a wave propagating in free space an impinging onto a reflection surface characterized by its electrical properties (relative permittivity and conductivity).

The range of the parameters used in the derivation of the reflection coefficient are the following:

Frequency: From 10 MHz to 10 GHz

Relative permitivity: From 1 to 10

Conductivity: From 0 S/m to 10 S/m

GOAL:

This figure shows the magnitude of the reflection coefficient (Fresnel coefficient) in terms of the angle of incidence.

INTRODUCTION:

This representation corresponds to a wave propagating in free space an impinging onto a reflection surface characterized by its electrical properties (relative permittivity and conductivity) for a given frequency. The figure shows that the reflection coefficient for both polarizations, i.e., vertical (hard) and horizontal (soft), approaches to 1 when the angle of incidence goes closer to 90ยบ (grazing incidence).

INSTRUCTIONS:

Introduce the electrical properties of the reflection surface (relative permittivity and conductivity) and the frequency to show both the vertical and horizontal reflection coefficients.