Figure 10
From: A Time-Variant MIMO Channel Model Directly Parametrised from Measurements

Antenna arrays. (a) 2.55 GHz omni-directional patch array (ODA), (b) 2.55 GHz circular monopole array (UCA), (c) 5.25 GHz ODA. ODA, 2.55 GHz
UCA, 2.55 GHz
ODA, 5.25 GHz