Radiofrequency generation using gyromagnetic nonlinear transmission lines for aerospace applications

• Grant number: 18/26086-2
• Support Opportunities: Regular Research Grants
• Start date: May 01, 2019
• End date: October 31, 2021
• Field of knowledge: Engineering - Aerospace Engineering
• Principal Investigator: José Osvaldo Rossi
• Grantee: José Osvaldo Rossi
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil
• Associated researchers: Edl Schamiloglu ; Elizete Gonçalves Lopes Rangel ; Joaquim José Barroso de Castro ; Lauro Paulo da Silva Neto

Abstract

A great deal of interest has been devoted to the study of nonlinear transmission lines (LTNLs) for radio frequency (RF) generation since they have been used with great success to produce an oscillatory wave train along the line and in its output. It is expected that the techniques to be developed in this research project can be used in the design of these lines in RF generation for space applications, in pulsed radar systems and in mobile defense platforms of compact size for enemy signal disruption. There are two configurations of NLTLs, the first one is a dispersive line consisting of LC sections with non-linear components, and the second is a non-dispersive and continuous line known as gyromagnetic using ferrites polarized by an axial magnetic field. In this research, the focus of the study is on the second line, since it can operate in a broader frequency range (0.3 to 2.0 GHz) with higher conversion efficiency (up to 40.0%) when compared to a discrete NLTL which is limited to 300.0 MHz with less than 10.0% efficiency, because of its dielectric losses and stray impedances in the line structure. The objective of this research is to construct a gyromagnetic line of reduced size, without the use of the solenoid to produce the axial field. The novelty here is to use permanent magnets instead of a solenoid to provide a compact system for space applications since the use of solenoid requires a high current DC source and a large cross-section wire to prevent overheating, which makes it difficult the device construction. For this purpose, we propose the design and construction of a coaxial line of the order of 30 cm in length for the investigation of this new system with permanent magnets. For the validation of the results, it is also proposed to use the SPICE simulation, employing an LC cell-based line model. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

ROSSI, J. O.; YAMASAKI, F. S.; BARROSO, J. J.; GRECO, A. F.; RANGEL, E. G. L.; TEIXEIRA, A. F.; NETO, L. P. S.; SCHAMILOGLU, E.. F generation using a compact bench gyromagnetic lin. Review of Scientific Instruments, v. 93, n. 2, FEB 1 2022. (18/26086-2)

AREDES, RANGEL GRAUDISTON; ANTONELLI, EDUARDO; SILVA NETO, LAURO P.; ROSSI, JOSE O.; SCHAMILOGLU, EDL. Tunability Behavior of (Ba, Ca)(Zr, Ti)O-3 Ceramic Capacitors Powered by Thermally Induced Phase Transitions With Applications to Nonlinear Transmission Lines. IEEE TRANSACTIONS ON PLASMA SCIENCE, v. N/A, p. 8-pg., 2022-05-12. (18/26086-2, 20/04395-3)

GRECO, ANA F. G.; ROSSI, JOSE O.; BARROSO, JOAQUIM J.; YAMASAKI, FERNANDA S.; TEIXEIRA, ANDRE F.; RANGEL, ELIZETE G. L.; NETO, LAURO P. S.; SCHAMILOGLU, EDL. Analysis of the sharpening effect in gyromagnetic nonlinear transmission lines using the unidimensional form of the Landau-Lifshitz-Gilbert equation. Review of Scientific Instruments, v. 93, n. 6, p. 11-pg., 2022-06-01. (18/26086-2)

AREDES, RANGEL G. G.; ANTONELLI, EDUARDO; SILVA NETO, LAURO P.; ROSSI, JOSE O. O.; LIMA, GUSTAVO N. N.; BARROSO, JOAQUIM J. J.; RANGEL, ELIZETE G. L.; SCHAMILOGLU, EDL. Development of Tunable Ferroelectric Ceramic Capacitors. IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, v. 70, n. 8, p. 8-pg., 2023-08-01. (18/26086-2, 20/04395-3)