A Study on Reconfigurable Antenna Array Feed Networks Using Distributed Switched-Line Phase Shifters for mm-Wave Operation

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The primary aim of the research is to design a passive high-gain planar mm-wave antenna which can be electronically scanned in two dimensions by reconfiguring the array feed network. In addition to this, the research aims to implement a design which could be realised using phase-change materials to minimise the insertion loss and size of a switch-line phase shifter, which is suitable for use in an antenna array feed network (this is fundamental to increasing the operating frequency well into the mm-wave bands). Finally, the research also aims to reduce the complexity of configuring the antenna array by developing a machine learning algorithm to assist with the array design incorporating the switched-line phase shifters. The research aims to answer the following questions: 1) What benefits can be offered by distributing phase shifters throughout the array feed network rather than at each individual element? 2) Can phase-change materials facilitate sufficiently low-loss RF switches at mm-wave frequencies suitable for a reconfigurable antenna feed network? 3) Can a machine learning algorithm enable a reduction in the complexity of a large dual-scan array configuration by reducing the number of redundant phase states? To be updated in January 2024 (at Year 3 Progression)