The study of mode conversion between the extraordinary mode and the Bernstein mode in a warm inhomogeneous collisionless magnetoplasma is carried out numerically by solving for the Fourier transformed electric fields, using a recently developed integral formulation. Reflection and transmission coefficients for the incident extraordinary wave are obtained as functions of the peak number density for an inverseparabolic electron density profile. In addition to previously reported resonances occurring at the total reflection, antiresonances are also found. The spatial dependence of the electric fields at these resonances is presented.