A digital non-Foster fast-wave line using an Internet of Things approach for software tuning of multiple digital negative capacitors

A software-tunable digital non-Foster fast-wave transmission line is presented, using an Internet of Things approach to implement tuning and signal monitoring. Such non-Foster fast-wave lines offer greater bandwidth than conventional passive designs, and a digital non-Foster approach is proposed to provide a software-adjustable implementation of the required negative capacitors. Further, an IoT (Internet-of-Things) approach is employed, where multiple non-Foster circuit elements are controlled over Ethernet by a laptop graphical user interface, including remote signal monitoring. This IoT approach has the advantage of being readily extended to accommodate more devices or multidimensional arrays. Measured data is presented for an IoT-based prototype of a superluminal digital non-Foster fast-wave line with software-tunable negative capacitance.