VivaTech specializes in providing custom solutions for millimeter-wave / THz applications. Their technical heritage covers more than 30 years since the founders participated in European and US space programs at ESA and NASA-JPL. Vivatech’s technical strength plus in-depth market knowledge enables them to address the needs of customers working with millimeter-wave communication test equipment, transmitter and receiver systems, and various fields of scientific research.
VivaTech has developed high performance and cost effective modules, subsystems and systems covering frequencies in the range 26 to 500 GHz. These include millimeter-wave frequency source modules, transceivers, frequency extension modules for PNAs and VNAs, custom up-converters and block down-converters.

http://vivatechmmw.com/en/