Signal-signal D-probe and unified launch pad designs

In this paper, two different micro probes (D-probe and GSSG probe) are studied. A specially designed PCB was used to compare the electrical performances of DUTs with de-embedded fixtures for the micro probes and 2.9 mm connectors. Smart Fixture De-embedding (SFD) was used to de-embed the S-parameters of the DUT from the test fixtures. The results showed consistent results of DUTs using both micro probes and 2.92 mm connectors up to nearly 40GHz.