  Transmission profiles in bilayer graphene have been studied theoretically in
presence of a pair of delta function magnetic barriers. Two types of asymmetric
Fano resonances are discussed in connection to the electronic cloaking effect
in graphene nanostructures. One arises in a static (time independent) vector
barrier due to the quantum interference between the discrete hole like state
inside the barrier and the electron like continuum outside. In this case the
computed results for normal incidence indirectly verify that the cloaking
effect is a manifestation of the chirality conservation in charge transport
through bilayer graphene scalar barriers. While the other arising due to
discrete continuum coupling via the exchange of photon under the application of
an external time periodic scalar potential. The study of Fano resonances in
transmission spectrum is very much urgent in regards of localization of charge
carriers in graphene nano structures for its application in digital device
fabrication.
