Model STO-12-S1 is an E Band vector network analyzer (VNA) frequency extender designed to achieve full 2-port, S-parameter testing at 60 to 90 GHz.
It is compatible with modern vector network analyzers such as the Rohde & Schwarz ZVA Series and the Keysight PNA-X Series.
The frequency extenders can achieve a dynamic range of 90 dB and are great for testing many E band devices including passive and active devices. It takes a pair to complete the full S parameter test set.