Soil Medium Electromagnetic Scattering Model for the Study of Wireless Underground Sensor Networks

Table 3

The physical parameters used for computing the wave number obtained by QCA.

Symbol	Quantity	Value and units
	Volume fraction	or
	Relative permittivity in spheres	(F m^-1)
	Background permittivity	(F m^-1)
	Radius of spheres	(m) (frequency up to ); (m) (frequency up to )