Roos Instruments

Roos Instruments, Inc., founded in 1989 and headquartered in Santa Clara, California, USA, is a pioneer in automated microwave and RF test systems, specializing in the Cassini ATE platform. The company designs modular test equipment for semiconductors, focusing on high-frequency testing (DC to 86 GHz and beyond) with applications in automotive, aerospace, defense, and consumer electronics. Its Cassini platform, built on over 30 years of research, combines a single receiver with object-oriented software for high-throughput, accurate testing, reducing time-to-market. Roos Instruments integrates advanced technologies like LabVIEW and supports high-speed production testing for millions of chips annually. The company, founded by RF microwave engineers including Mark Roos, emphasizes sustainability with 100% renewable energy use, equipment recycling, and adherence to the Responsible Business Alliance’s Code of Conduct.