Oso Semiconductor
Physical AI
Fabless RF chip company commercialising ultra-low-loss beamforming chipsets for phased-array antennas.
Oso Semiconductor is a fabless chip company developing power-efficient beamforming chipsets for electronically steered (phased-array) antennas. Its ultra-low-loss beamforming IP removes up to 4x of the power-hungry circuits in a phased-array front end, which the company says yields up to 4x lower power, 2x smaller chips, 10x better linearity and 10x better EMI resilience versus conventional architectures. Target markets are SATCOM user terminals - where RF power consumption and chip cost are the dominant system cost drivers - defence communications and drones (low size, weight and power), with 5G/6G and automotive radar as crossover markets. It raised a $5.2M seed in February 2025 to build pre-production beamforming chipsets and evaluation systems for tier-one customers. Technical performance figures are company-reported.
Research mapping
Physical AI / Perception & Sensing (L7) / A
Evidence boundary
Original analysis and independent corroboration remain under development. Commercial scale and durable technical advantage remain under review.
What makes it defensible
An architecture that deletes front-end circuits rather than shrinking them - it attacks the two cost drivers (RF power and chip count) that keep phased arrays out of consumer SATCOM.
Position in the stack: RF front-end silicon supplier to antenna/aperture OEMs and defence programmes; the moat is circuit and algorithm IP rooted in Berkeley phased-array research, which works on mainstream nodes so it is not gated by leading-edge fab access.
Who buys it
Founding team
Dr. Matthew G. Anderson — Founder & CEO — Doctoral work in the Electrical Engineering and Computer Science department at UC Berkeley, where he developed a lower-loss algorithmic approach to phase shifting and combining for phased arrays; founded Oso Semiconductor to commercialise it.
SourceFinancing detail
- Last round
- Series A
Investors: Engine Ventures, Entrada Ventures, Berkeley SkyDeck, J-Ventures, Safar Partners, Impact Science Ventures, NSF, Activate, LBNL, Collab Fund, LBVP
Mapped funds and investors
Direct relationships supported by published evidence.
Reported holdings as-of
No sourced relationships mapped yet.
Disclosed investment history
No sourced relationships mapped yet.
Showing up to four relationships in each group. ETF weights describe the fund’s portfolio, not ownership of this company. Private investment history does not establish current ownership.
Evidence & media
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Oso Semiconductor secures $5.2M to advance beamforming chipsets for SATCOM and 5G
What this source supports: Oso Semiconductor raised $5.2M (led by Engine Ventures) to advance ultra-low-power beamforming chipsets for SATCOM and 5G
What it does not establish: Covers the seed only; does not corroborate the Series A / $45M post shown in the record
Source -
Ultra-low-power, high-performance beamformer ICs
What this source supports: Technical coverage of ultra-low-power, high-performance beamformer ICs for phased-array antennas
What it does not establish: Technical article; not company financial or commercial validation
Source -
Oso Semi beamforming ICs for phased-array antennas
What this source supports: Application note covering Oso Semi beamforming ICs for phased-array antennas
What it does not establish: Educational/trade content; no traction data
Source -
Oso Semiconductor - portfolio
What this source supports: Investor portfolio page listing Oso Semiconductor among Fitz Gate Ventures portfolio companies
What it does not establish: Investor page; no financials
Source