antenna-theory.com

[mantianfeiyi]

in the description of the second way to decrease ECC : Increasing separation between antennas .

When antennas are space further apart, how to understand the sentence "This is because the relative phase between them is not constant. "?

[admin]

ECC is a measure of how correlated radiation patterns are. As the antennas are separated, then incoming rays (plane waves) from different directions are more likely to be out of phase (you can read up on antenna arrays if that doesn't make sense). Since ECC integrates over the whole 3d surface, less correlation integrates to a lower ECC.