Corrections to “Simple Link-Budget Estimation Formulas for Channels Including Anomalous Reflectors”

In the above article
[1]
, there is a mistake in one of the expressions that represents the equivalent path loss between the transmitter, a metasurface designed as a perfect anomalous reflector, and the receiver. More accurately, the representation of the metasurface as a gain parameter includes a term that should not be present.