Abstract: An amplification circuit has a field effect transistor, an input side matching circuit, an output side matching circuit, a capacitor, and a resistor. The input side matching circuit is connected between an input port and the source terminal of the field effect transistor and outputs an input signal that changes with a bias voltage as a center value. The output side matching circuit is connected between an output port and the drain terminal of the field effect transistor. The capacitor is connected between the gate terminal of the field effect transistor and a first reference voltage source. The resistor is connected between the gate terminal of the field effect transistor and the first reference voltage source.

Abstract: A pilot assistance device includes information sources for determining automatically, in real time, a current vertical load factor of the aircraft, a computation unit for computing automatically, in real time, a flight director value using the current vertical load factor and a target vertical load factor representing a vertical load factor desired for the aircraft in the parabolic flight, the flight director value being computed in such a way as to be equal to a reference value when the current vertical load factor becomes equal to the target vertical load factor, and a display unit for presenting automatically, in real time, on a load factor scale, displayed on a screen of the cockpit of the aircraft, an indicator representative of the flight director value, computed by the computation unit, and an indicator indicating the reference value.

Abstract: A two-stage RF amplifier is provided. The first stage is a common-emitter transistor arrangement with a purely reactive degeneration impedance and an output impedance with a reactive component matched in frequency response to the degeneration impedance. The second stage is a buffer amplifier. The first amplifier can be designed for high gain which is flat over frequency by virtue of the reactive degeneration impedance. The first amplifier provides input matching, and the buffer provides output matching, with decoupling between the input and output.

Abstract: An electronic switching arrangement is shown to consist of an effective balanced pi configuration using series and shunt FETs and transformer coupling so that the impedances seen by such FETs are optimized.

Abstract: 1.