  In this work, we propose the generation of diffraction resistant beams by
using a parabolic reflector and a source of spherical waves positioned at a
point slightly displaced from its focus (away from the reflector). In our
analysis, considering the reflector dimensions much greater than the
wavelength, we describe the main characteristics of the resulting beams,
showing their properties of resistance to the diffraction effects. Due to its
simplicity, this method may be an interesting alternative for the generation of
long range diffraction resistant waves.
