TDR – VNA probe assemblies through 44GHz are in two configurations. Testing for small discontinuities on non-planar printed circuit boards is possible on a 40GHz VNA or fast TDR. Probes reportedly deliver excellent return loss and low insertion loss. OmniJet probe 40GHz insertion loss is reportedly better than -1.5dB, and return loss is better than -10.0dB at 40GHz.

D-Coax, www.D-COAX.com