A. Elhajj et al., CHARACTERISTIC MODES OF A SLOT IN A CONDUCTING CYLINDER AND THEIR USEFOR PENETRATION AND SCATTERING, TE CASE, IEEE transactions on antennas and propagation, 40(2), 1992, pp. 156-161
A characteristic mode theory for slots in a circular conducting cylind
er is given for calculating the characteristic magnetic currents, the
equivalent magnetic current, the radiation patterns, and the fields ev
erywhere (especially in the aperture region) of an infinitely long thi
n perfectly conducting cylinder with an infinitely long slot. The char
acteristic modes are obtained from the solution of an eigenvalue equat
ion representing the continuity of the tangential component of the mag
netic field in the slot.