NON-FOSTER NETWORKS FOR TUNABLE AND WIDEBAND RF DEVICES
Abstract
This project deals with a novel type of broadband and tunable/reconfigurable radiofrequency (RF) filters and amplifiers for use in communications, radars, surveillance and electronic warfare systems. Proposed RF devices will be based on negative capacitors/inductors (so-called non-Foster elements), in order to achieve both a broad bandwidth and tunability/reconfigurability feature since non-Foster elements do not have bandwidth and tunability constraints. The main bottleneck that prevents widespread use of non-Foster elements is inherent stability problem, caused by their active nature. Therefore, we propose a project that will investigate stability problems and enable construction of stable broadband and tunable matching networks. If successful, proposed project will enable construction of RF broadband tunable filters and power amplifiers for ultrabroadband RF devices. The stability problem will be overcome using recently proposed band-pass negative capacitor. In addition, the band-pass design will also enable construction of stable negative inductance. Furthermore, a broadband tunable matching network for use in RF tunable filters or power amplifier will designed using novel band-pass non-Foster elements. Finally, the MMIC demonstrator-prototype of an RF tunable filter or one-stage power amplifier operating in L or Ku microwave band, will be designed and tested.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA86552017008
Entities
People
- Silvio Hrabar
Organizations
- Air Force Office of Scientific Research
- Faculty of Electrical Engineering and Computing, University of Zagreb
- United States Air Force