Non Foster Source Load Networks and Metasurfaces
Abstract
This study reports on a 24-month research effort undertaken towards two basic goals: (1) significantly suppress stability problems in the most common applications of non-Foster elements (the non-Foster metamaterials and the non-Foster matching) by novel design of non-Foster elements and/or applying concept of all-negative stable networks, and (2) propose a novel concept of non-Foster source that turns instability of non-Foster network into a useful feature, convenient for use in transmitting applications. All achieved results clearly show that a novel concept of improving the stability properties of generalized non-Foster networks, as well as a novel concept of a non-Foster source and associated non-Foster antenna transmitter are correct. Finally, we have argued that these new concepts could be extended into microwave regime and pave a way towards manufacturing of stable non-Foster metasurfaces for manipulation of electromagnetic waves. Yet another future application would be non-Foster-based self-oscillating metasurfaces with a tuning bandwidth ten times larger than the existing transmitting systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 09, 2018
- Accession Number
- AD1057740
Entities
People
- Igor Krois
- Josip Lončar
- Leo Vincelj
- Silvio Hrabar