Rt. Long et al., Use of parasitic strip to produce circular polarisation and increased bandwidth for cylindrical dielectric resonator antenna, ELECTR LETT, 37(7), 2001, pp. 406-408
An experimental investigation is undertaken to determine the effect on the
bandwidth and polarisation of a cylindrical dielectric resonator antenna wh
en a parasitic strip is attached to its surface. Particular configurations
are found that increase the bandwidth and produce circular polarisation.