Profile: Cascade Microtech, Inc. deals with the design, development and manufacture of advanced wafer probing solutions for electrical measurement & test of semiconductor integrated circuits & chips. Our products include engineering probes, production probes, test sockets, probe stations, integrated systems, and calibration tools. Our Infinity RF microwave probes are suitable for device characterization and modeling. Their proprietary thin-film and co-axial probe technology reduces unwanted couplings to nearby devices & transmission modes. The 220 GHz Infinity Probe has membrane GSG contact tip design that reduces stray EM fields near probe tip. The EM field near the tip is controlled, and allows repeatable measurements at 220 GHz.