Study of HV Dielectrics for High Frequency Operation in Linear and Nonlinear Transmission Lines and Simulation and Development of Hybrid Nonlinear Lines for RF Generation
Abstract
This report describes the main results obtained in the research project on special solid-state devices, known as Nonlinear Transmission Lines (NLTLs) and used in RF generation, in the period from Dec./2017 to Dec./2020. We studied two types of NLTLs for aerospace applications: discrete LC with variable capacitors and continuous coaxial lines (gyromagnetic) with ferrite cores. In the first case, discrete lines were designed from LTSPICE simulations and built with silicon carbide Schottky diodes (SiC) for operation around 200 MHz at high voltage (700 V). In this case, the irradiation tests were made in an anechoic chamber for EMI suppression with emitting and receiving DRG antennas. With gyromagnetic lines, emphasis was on developing a prototype for operation in the 3 to 5 kV range, using Ferroxcube ferrites with an outer diameter of 9 mm and an exponential input pulse generator from FID Technologies with a pulse width of 10 ns.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 25, 2022
- Accession Number
- AD1165519
Entities
People
- J.O. Rossi