The VTWR03-R from VivaTech is a Vector Network Analyzer Extender with Extended Frequency 220 to 325 GHz, LO Frequency 13.75 to 20.31 GHz, Input Power -17 dBm, Dynamic Range 100 to 110 dB, Attenuation 0 to 30 dB. More details for VTWR03-R can be seen below.