Rohde and Schwarz France

La Forêt-Fouesnant, France

Rohde and Schwarz France

La Forêt-Fouesnant, France

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Andee Y.,CEA Grenoble | Prouvee J.,CEA Grenoble | Graux F.,Rohde and Schwarz France | Danneville F.,CNRS Institute of Electronics, Microelectronics and Nanotechnology
Electronics Letters | Year: 2014

The noise characterisation of differential circuits is considered. A new method for the determination of the differential mode noise power at the output of these circuits is presented. It is demonstrated that this differential noise power depends not only on the output noise powers but also on the correlation of the output noise waves. An analytical expression of this correlation in terms of the S-parameters and the output noise powers is determined. Based on the presented theory, a fast and simple technique is developed for the noise figure measurement of differential circuits. © The Institution of Engineering and Technology 2014.


Bridier V.,Rohde and Schwarz France | Bridier V.,CNRS Institute of Electronics, Microelectronics and Nanotechnology | Graux F.,Rohde and Schwarz France | Ducatteau D.,CNRS Institute of Electronics, Microelectronics and Nanotechnology | And 4 more authors.
2014 International Radar Conference, Radar 2014 | Year: 2014

Taking advantage of a recently developed 20GHz six port mixer based nonlinear vector network analyzer (NVNA) prototype able to measure three frequencies simultaneously, the time domain tension and current waveforms are reconstructed at each chosen pulse of a non periodic pulse train starting from first pulse. This new instrument is used to study the influence of realistic radar pulse train on a 5W S-band GaN on silicon HEMT transistor. © 2014 IEEE.


Desmet Y.,Lille University of Science and Technology | Thomas B.,Siemens AG | Peytavit E.,Lille University of Science and Technology | Pavanello F.,Lille University of Science and Technology | And 7 more authors.
2016 Global Symposium on Millimeter Waves, GSMM 2016 and ESA Workshop on Millimetre-Wave Technology and Applications | Year: 2016

We demonstrate a W-band bolometer based on a platinum nano-strip which is integrated with a waveguide probe on a polymer substrate. We measure a high thermal response of 49000 K/W thanks to the small size of the Pt resistor and the thermal properties of the polymer. Furthermore, its small thermal capacity allows to decrease the time constant to 2.2 ms. A good matching in the entire W-band is achieved by a careful design of the probe. The linearity of the bolometer is demonstrated over 4 decades of RF power. As it is based on traditional microelectronic fabrication techniques, all dimensions of the circuit can be easily reduced to design full-band bolometers for smaller waveguides and higher frequency band up to the THz. © 2016 IEEE.

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