The research involves the analysis and design of a new band of horn antennas,
namely Frequency Selective Horns (FSHs). Folding a Frequency Selective Surface
(FSS) into a shape of a cone makes a FSH. The stimulus behind this research
emanates from an idea to use the FSH as a microwave camera for medical
diagnostic purposes. FSHs with dipole geometries have been modelled using
existing software. A quasi-static approximation models the dipole elements with a
dielectric backing as dielectrically loaded cylindrical conducting elements. [Continues.]
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.