Measurement of mutual coupling between profiled dielectric rod antennas

Arrays of dielectric rod antennas are being considered at millimeter and terahertz frequencies for a variety of application. The mutual coupling in such an array is assessed through the measurement and computation for two dielectric rods in the array. Results are presented for linearly tapered rods and rods that give low sidelobes. It is shown that the coupling in both principal planes are comparable and also decay with a normalized element spacing at a similar rate.