Hm. An et al., RADIATION-PATTERN PREDICTION OF THE UNIDIRECTIONAL DIELECTRIC RADIATOR (UDR), IEEE microwave and guided wave letters, 4(11), 1994, pp. 367-369
This letter presents a theoretical prediction of the radiation pattern
s of the unidirectional dielectric radiator (UDR) using a cavity appro
ximation. The antenna structure is first modeled as an NRD resonator,
and the electromagnetic fields at the radiating aperture of the antenn
a structure are then determined and used to calculate the radiation fi
elds and the radiation patterns of the antenna. The validity of the an
alysis is confirmed by the measurement results.