@InProceedings{SilvaNetoMoRoBaRaCo:2019:DeRFCi,
author = "Silva Neto, Lauro Paulo and Moraes, Henrique Monteiro and Rossi,
Jos{\'e} Osvaldo and Barroso de Castro, Joaquim Jos{\'e} and
Rangel, Elizete Gon{\c{c}}alves Lopes and Concei{\c{c}}{\~a}o,
Arlindo",
affiliation = "{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and
{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Tecnol{\'o}gico da Aeron{\'a}utica (ITA)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de S{\~a}o Paulo (UNIFESP)}",
title = "Development of an RF circuit amplifier fed by a low power
nonlinear transmission line",
year = "2019",
organization = "IEEE Pulsed Power and Plasema Science Conferenc",
abstract = "The lumped nonlinear transmission lines have been studied for the
radiofrequency signals generation in the range of the order of
tens of MHz up to a few hundreds of MHz depending on the nonlinear
element used to build the LC line. The oscillations obtained at
the output of these lines are applied in defense mobile platforms
and communications systems. Low power nonlinear transmission lines
use varactor diodes as nonlinear elements, which show a good
nonlinear effect with capacitance variation of the order of 90% at
their P-N junction with the applied voltage, which is an excellent
performance to obtain oscillations at the line output. However,
these semiconductor devices operate at low voltage, producing
small voltage modulation depth, low power, and consequently
reduced signal range. Looking for increasing the voltage
modulation depth of the signal generated with nonlinear
transmission lines, this work developed a radiofrequency amplifier
using a Metal Oxide Semiconductor Field Effect Transistor MOSFET
model RD06HVF1. A 30-section line using varactor diodes MV209 as
nonlinear elements can work as an RF source to obtain oscillations
with 40 MHz of frequency at the line output. By means of SPICE
simulations, it has been demonstrated that an amplifier circuit
connected to the output of this varactor diode transmission line
can produce an increase of the voltage modulation depth produced
at line output from 10.7 V to 41,08 V approximately, thus allowing
higher level power to electromagnetic wave propagation and
consequently higher signal range. Experimental comparison using a
PCB prototype with the corresponding simulation will be also
shown.",
conference-location = "Orlando",
conference-year = "23-28 June",
language = "en",
targetfile = "PPPS2019 V5- Rossi.pdf",
urlaccessdate = "27 abr. 2024"
}