  In this article, we study the formation of the bound states in the continuum
(BICs) in a two-channel Fano-Anderson model. We employ the Green's function
formalism, together with the equation of motion method, to analyze the relevant
observables, such as the transmission coefficient and the density of states.
Most importantly, our results show that the system hosts true BICs for the case
of a symmetric configuration with the degenerate impurity levels, and a
complete transmission channel is then suppressed. Finally, we argue that the
proposed mechanism could be relevant for the realization of BICs in the
electronic and photonic systems.
