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This paper describes the application of NiTi wires in the pressure sensors for monitoring of patient's movements in the bed. A short introduction into NiTi material properties is followed by a description of mechanical pressure sensor construction and possible modifications. The measuring electronics, design of integrated firmware and software for data capturing are explained next. Experimentally...
Four basic methods for measuring RF circuit frequency response were implemented and tested on the popular software defined radio system based on popular GNU-radio software package and on the Ettus USRP hardware. Properties, advantages and disadvantages of this solution were studied and are described in this paper. Using the proposed platform for measurement is interesting, because the equipment needed...
The antenna is an essential part of many electronic systems. Selecting the best antenna may be very important, but selecting the right antenna can be a difficult task, because of variation in the way manufacturers specify and describe them. This paper introduces a method to measure an antenna gain and antenna factor of small loop antennas. It is well known, that the antenna measurement in an anechoic...
A detailed knowledge of amplifier transmission characteristics is important in many technical areas, for instance in commercial modeling systems as the Simulink. The paper shows that a good approximation of measured amplitude and phase characteristics can be made numerically by a rational function. If there is enough computation time, the complex transfer characteristic can be well approximated. Then...
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