Seyed A. Tabatabaei is the founder, chairman and CEO of mmTron, a Redwood City fabless semiconductor company building high-linearity millimeter-wave MMICs for 5G, 6G, SATCOM, instrumentation and defense. A PhD engineer who has worked in mmWave since 1986, he spent decades at M/A-COM, Hewlett Packard, and Endwave before starting the design house Teramics and then founding mmTron in 2020. In April 2026 the company closed a $45M Series A led by Maverick Silicon.
mmTron is a Redwood City, California semiconductor company that designs high-performance millimeter-wave integrated circuits (MMICs). Founded in 2020 by Seyed Tabatabaei and Mona Molaasgari, the company builds power amplifiers, low noise amplifiers, front-end modules, mixers, switches and wideband distributed amplifiers using GaAs, GaN, InP, SiGe and RFSOI process technologies. Its chips target the linearity, bandwidth and power-efficiency demands of satellite communications, 5G/6G wireless, aerospace and defense radar, and RF instrumentation up to 180 GHz. In April 2026 mmTron closed a $45M Series A led by Maverick Silicon.
Crystal Sonic is a Phoenix, Arizona deep-tech startup that uses sound to cut semiconductor costs. Its patented Sonic Lift-off (SLO) technology acts as an 'acoustic scalpel,' peeling thin device layers off expensive wafers so the underlying substrate can be reused instead of ground into dust. Legacy manufacturing wastes 90% or more of substrate material, and substrates can account for up to half of a device's cost - Crystal Sonic wants to reclaim that. Spun out of an Arizona State University lab in 2018, the company has won backing from NASA, the Department of Energy, the NSF, and Lam Capital.
General Radar Corp. is a Menlo Park deep-tech company building high-resolution, software-defined phased-array (AESA) radar systems for aerospace, defense, wind energy, autonomy, and weather markets. Founded in 2016 by former NASA/JPL engineer Dmitry Turbiner, the company pairs a GaN AESA front-end with digital beam-forming and GPU supercomputing to deliver radars it says are dramatically higher resolution and roughly 20x cheaper than legacy aerospace radar - largely from commercial off-the-shelf parts. It raised a $22M Series A in 2022, bringing total funding to roughly $47.5M.