Robert Plana

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In this paper, the electrical and noise performances of a 0.8 microm silicon germanium (SiGe) transistor optimized for the design of low phase-noise circuits are described. A nonlinear model developed for the transistor and its use for the design of a low-phase noise C band sapphire resonator oscillator are also reported. The best measured phase noise (at(More)
A novel design of a highly sensitive wireless passive radio frequency strain transducer is presented based on a patch antenna loaded with an open loop that is capable of sensing strain remotely. The new idea of utilizing a cantilever at the gap of the open loop significantly improves the sensitivity of resonant frequency shifts. In measurements, the(More)
This paper gives an overview of development and prototyping of a radio interface designed for high data rate Wireless Sensor Networks (WSN) using a top down approach. An aerospace application of this work is presented to underline the importance of rapid and flexible prototyping. Single Carrier Frequency division multiple Access (SC-FDMA), with a very low(More)
Impulse Radio Ultra Wide Band (IR-UWB) is a promising technology to address Wireless Sensor Network (WSN) constraints. However, existing network simulation tools do not provide a complete WSN simulation architecture, with the IR-UWB specificities at the PHYsical (PHY) and the Medium Access Control(MAC) layers. In this paper, we propose a WSN simulation(More)
In this paper, a 5 GHz FBAR based balanced oscillator is presented. The FBAR resonator was integrated directly above the 0.35 mum BiCMOS IC oscillator. The use of the balanced configuration allows dividing by two the electrodes resistance of the FBAR. Therefore, better phase noise is obtained comparatively to the single ended version. The measured phase(More)
In this article we investigate the effect of relative humidity on dielectric charging/discharging processes in electrostatically actuated MEMS devices. The assessment procedure is based on surface potential measurements using Kelvin Probe Force Microscopy (KPFM) and it targets in this specific work PECVD silicon nitride films in view of application in(More)
A highly sensitive wireless passive radio frequency strain transducer is designed and developed based on a patch antenna loaded with an open loop. A novel idea of utilizing a cantilever at the gap of the open loop significantly improves the sensitivity of resonant frequency shifts. The ground plane allows the sensitivity of the sensor to be independent from(More)
The analysis and optimization of millimeter-wave coupling structures are detailed to design a high-performance <i>V</i>-band 65-nm CMOS parallel power amplifier (PA). The difficulty in this design consists of the use of a thin digital seven metal layer, back end of line, and low-power transistors dedicated to pure digital applications. In this context, two(More)
We introduce the radio reconfigurability thanks to IRUWB mostly digital architecture for MANET context. This particular context implies some constraints on the radio interface such as low cost, low power, small dimensions and simplicity. Here, we propose an implementation of dynamic reconfigurable receiver on ASIC, and FPGA, after having explained the(More)