Abstract
Two four-element planar arrays are reported utilising cylindrical dielectric resonators excited by probes at the HE11δ mode. The first array produces broadside radiation, whereas the second one provides maximum radiation at an elevation angle of ~40°. The resonant frequency, radiation pattern, gain, unloaded Q-factor and impedance bandwidth of each array configuration are reported and the experimental results are compared with the theoretical values. Results indicated that the gains of the two configurations were greater than the gain of the single element by factors of 4 and 3, respectively. For both arrays, the impedance bandwidth was increased by ~30% with respect to that of the single antenna.
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