Stellant Systems, Inc. is a manufacturer of critical spectrum and power amplification systems, serving defense, space, medical, scientific, and industrial customers worldwide. The company's heritage spans over 90 years, tracing back to pioneering firms such as Hughes Aircraft Company and Litton Industries.
Technical domains include microwave devices, RF amplification, electronic power conditioning, and xenon ion propulsion systems. Its product line features traveling-wave tubes (TWTs), traveling-wave tube amplifiers (TWTAs), microwave power modules (MPMs), electronic power conditioners (EPCs), and xenon ion propulsion systems (XIPS), which are employed in high-stakes applications across sectors.
The company holds the position of being the only U.S. supplier of space-qualified TWTs and TWTAs. Operations are based in Torrance, California; Folsom, California; Williamsport, Pennsylvania; and Melville, New York, with a vertically integrated approach to design and manufacturing, reflecting pride in its heritage and innovation.





