DC-Amplifier-Input-Offset-Voltage Control in a Constant-Temperature Thermoresistive-Sensor-Measurement Instrument

In this paper, the effect of dc amplifier input offset voltage on the static and dynamic performances of a generic constant-temperature thermoresistive-sensor-feedback circuit (CTC) is reviewed. A negative-feedback automatic control circuit for the input offset voltage is proposed in order to assure a stable operation of the CTC and to obtain optimal response time. Experimental evaluation results of the proposed circuit performance are presented     

New and efficient modeling for telecommunication devices

With the collaboration of the CNES, a new modeling method for telecommunication devices, presented in this article, has been implemented on any computer. This method combines the variational method, based on electric equivalent circuit representations, and the boundary element method. Results are successfully compared to measurements and those from the previous publications. © 2002 Wiley Periodicals, Inc. Int J RF and Microwave CAE 12: 247–258, 2002.     

Flexible Wearable Pre-fractal Antennas for Personal High-Temperature Monitoring

Wireless Personal Communications - This paper proposed a new flexible and wearable antennas design based on teragon pre-fractal geometry until the third level, for monitoring high-temperature in...