TRABALHOS PUBLICADOS
2014 |
RF Pulse Formation in NLTLs Using Varactor Diode Proceedings Article Neto, Lauro P Silva; Rossi, José O; Barroso, Joaquim J; Yamasaki, Fernanda S Resumo | Links | BibTeX | Tags: nonlinear, RF pulse, Soliton generation @inproceedings{Lauro2014Solitonb, Nonlinear transmission lines (NLTLs) have been investigated for high power RF generation in radars for military and civil applications in remote sensing and surveillance. The NLTL consists of an LC ladder network, where Cs and/or Ls are responsible for the nonlinearity. The objective of this paper is to study the behavior through a low power nonlinear capacitive line, using varactor diodes as nonlinear capacitors. Spice simulations are also used to investigate the behavior of NLTLs by varying some parameters in the NLTL circuit model such as number of sections, applied input pulse voltage amplitude and load. These simulations showed good agreement with the experimental results obtained from low voltage varactor diode line prototype built with 30 sections. Finally, the Fast Fourier Transform (FFT) spectrum of the signal extracted at the load was used to study the RF generation. |