matlab - Phased Array Toolbox and directivity of IsotopicAntennaElement -

Can not you explain which units directivity are calculated in the MATLAB step-by-step arrow toolbox is?

I run the Isotropic Antenna Element with them.

  myAnt = phased.IsotropicAntenaElement (); Angus = [-30, -20, -10,0,10,20,30; 0,0,0,0,0,0,0,0]; Freq = 1e 9; It gives me:   d = 1.0e-03 * 0.1102 0.1102 0.1102 0.1102 0.1102 0.1102 0.1102 D = Directivity (Myant, Freak, Ang)  

The MATLAB manual states that directionality is the intensity of intensity in the given direction and the intensity of an isotopic antenna of the same power.

But what is hell, strong> Why does not it give a dob to the isotope antenna's directivity?

Does this mean that an isotropic antenna is less than an isotopic antenna? Or how should I understand it?

It is written as,

directivity Compute Element Directivity

D = Directivity (H, Frake, Angle) Combination of Directivity (in DBI) element ANGLE (degrees In) and for the specified instructions in the frequencies specified in FREQ (in Hertz).

Then it should be 0 for an aspirin antenna. You are receiving 0.0001102 , which is acceptable as 0 .