  In this report, we present the phased array feed (PAF) model equations for
two definitions of embedded beam patterns. In Roshi \& Fisher (2016), we
presented the PAF model by defining the embedded beam pattern as the beam
pattern due to a 1 V excitation to one port and all other ports short
circuited. This embedded beam pattern is referred to as voltage-embedded-beam
(VEB). The embedded beam pattern can also be defined as the beam pattern due to
a 1 A excitation to one port and all other ports open circuited. This
definition is usually used in engineering literature and we refer to the
pattern as current-embedded-beam (CEB). Here we derive the relationship between
the two embedded beam patterns and present the corresponding model equations.
