抄録
A Fock-type representation of the surface fields can be obtained for the transition region of the circular cylinder with impedance boundary conditions when it is illuminated by an obliquely incident plane wave. First, the eigen function expansions for the surface fields are derived using a standard method. Then, the Watson transformation is applied to derive expressions which are uniform in the transition region. This current supplements the PO current approximation near the transition region. The correction to the PO currents is expected to improve upon the accuracy of the prediction of the scattered field. The validity of the Fock-type representation was verified numerically by comparing with the exact series solution.
