Hello. I don't understand behaviour of directivity function for IsotropicAntenna from Phased Array Toolbox (Matlab R2014b). I supposed, that for Isotropic Antenna its directivity D(phi, theta) = const = 1 = 0 dBi. But in Documentation Center's example D = const = 0.1102e-3. That's the code:
myAnt = phased.IsotropicAntennaElement();ang = [-30,-20,-10,0,10,20,30; 0,0,0,0,0,0,0];freq = 1e9;d = directivity(myAnt,freq,ang)
Output
d = 1.0e-03 * 0.1102 0.1102 0.1102 0.1102 0.1102 0.1102 0.1102
Could anybody explain this? Thank you.
Best Answer