202
M. Singh et al.
Frequency (THz)
Transmission Coefficient
Fig. 8 Transmission coefficient versus frequency of MIMO antenna
Frequency (THz)
Transmission Coefficient (dB)
Fig. 9 Transmission coefficient versus frequency of MIMO antenna
p
2
i j =
s
∗
ii s i j + s
∗
ji s j j
2
1 −
s ii | 2 +
s ji | 2
1 −
s j j | 2 +
s i j | 2
(7)
s ij is the coupling factor between the i
j th and j
ith elements used
p
2
i j is the envelop correlation coefficient
The diversity gain is being used to evaluate the MIMO antenna system’s diversity
performance. The relationship between the gain in diversity and ECC is provided by
using the equation below (8).