Spinoza

"Spinoza", second edition. Encyclopedia entry for the Springer Encyclopedia of EM Phil and the Sciences, ed. D. Jalobeanu and C. T. Wolfe

Direct digital modulation introduced via optically-controlled GAPS in active MMIC on GaAs.

An application of optically controlled gap integrated in an active MMIC is presented.The gap,inserted in a feedback amplifier,can optically modulate the active device.This topology could reduce the design complexity of digital wireless communication systems

Electromagnetic modeling and characterization of an optically-controlled microwave phase shifterin GaAs integrated technology

A state of the art of the modeling of microwave photoswitching devices is exposed. A new 3 D electromagnetic modeling allows the design of an optically-controlled microwave phase shifter microwave starting from the traditional circuit of a microwave photoswitch. Measurements of the parameters S of this optically-controlled microwave phase shifter attests the function of this circuit by optical way and highlights the interest of the integration of this new type of microwave phase shifters in systems of antennas arrays. A new optically-controlled microwave phase shifter with a patented structure is under development