Parametric Analysis and Bandwidth Optimisation of Hybrid Linear-exponential Tapered Slot Vivaldi Antennas

摘要

This work presents an analysis of the effects of a hybrid linearexponentialudtapered slot on the key properties of both the antipodaludand co-planar Vivaldi antennas at low frequencies usingudparametric analysis and Nonlinear Sequential Programmingudoptimisation. It was observed that the hybrid tapered slot canudextend the lower frequency limit of the antipodal Vivaldi antennaudhowever with slight deterioration of the gain and E-planeudradiation pattern. On the other hand, the optimisation of theudhybrid and conventional tapered slot co-planar Vivaldi antennasudconverged to antennas with the same performance results.