• a 44.5 to 49.5 GHz LO input (with the DUT operating on the second harmonic of this LO input).
• a 1 GHz fixed IF being sent to Port 2 of the VNA.
Setup
A 3743A module will be used to drive the RF port, an external synthesizer (Ext Synth 1) will be used to drive the LO and the DUT output will be sent to Port 2 of the VNA.
• Define band 1: 90-100 GHz
• Int Src = 1/1(f+0)
• Ext Src 1 = 1/2(f-1 GHz)
• Rcvr (Receiver) = CW 1 GHz
Result
External module control activated in 3739-based modes. The source is enabled but the receiver is not. RF leveling should be used. Phase inversion should be activated (see next subsection, Phase Inversion below).