RF Microwave Probes

Cascade Microtech created the first microwave probe in 1983 that enabled the first on-wafer 18 GHz measurements and accelerated the commercialization of gallium arsenide chips. Our line of RF probes is designed to meet the challenges of high-frequency probing and ensures low and stable contact resistance on aluminum pads.

Infinity Probe

Ideal for device characterization and modeling, Infinity probe combines extremely low contact resistance on aluminum pads with unsurpassed RF measurement accuracy for highly reliable, repeatable measurements. Proprietary thin-film and coaxial probe technology reduces unwanted couplings to nearby devices and transmission modes.

Dual Infinity Probe

The Infinity Probe® family is expanding with the addition of the Dual Infinity Probe series to 67 GHz. The new probe provides the best isolation among currently available commercial probes between the two signals. This is a critical advantage in performing accurate two or four-port calibrations. The Dual Infinity Probe is available in GSGSG, GSSG and SGS configurations and frequencies up to 67 GHz.

220 GHz Infinity Probe

The 220 GHz Infinity Probe’s new membrane GSG contact tip design reduces stray EM fields near probe tip. Control of EM fields near the tip allows repeatable measurements at 220 GHz and improved crosstalk performance between the tips.

Air Coplanar Probe Series

The Air Coplanar Probe is a rugged microwave probe with a compliant tip for accurate, repeatable measurements on-wafer. It features excellent probe-tip visibility and the lowest loss available. Available as both single and dual, the ACP probe combines outstanding electrical performance with precise probe mechanics and is todays most widely used microwave probe available.