Comparison of slotline characteristics

Abstract

The slot width required for conventional slotlines is very narrow when etched on low dielectric constant substrates. This poses fabrication difficulties and discourages the use of slotlines on these substrates. However, the slotline is finding increased applications in slot antennas. In order to feed the slot antennas, alternate structures must be found that relax the fabricational difficulties. Two such new structures are the bilateral slotline and the asymmetric slotline. In this thesis, design data was developed and comparison was made between the various slotlines with regards to the substrate parameters and the slot width. Use was made of computer codes already developed for these structures.