G. Dambrosio et Md. Migliore, NONIDEAL RADIATION-PATTERN OF SIMPLE LEAKY-WAVE ANTENNAS EXPLAINED INTERMS OF FREE RESONANT MODES, IEE proceedings. Microwaves, antennas and propagation, 145(5), 1998, pp. 424-426
A slotted rectangular waveguide and a channel guide antenna are consid
ered, It is theoretically and experimentally shown that two leaky-wave
s must be taken into account for the far field evaluation. It is also
shown that the main lobe of the radiation pattern of the channel guide
antenna is due to a complex mode other than that found as a perturbat
ive solution.