Millibeam designs semiconductor chips, antennas and RF architectures for counter‑uncrewed aerial systems, and has developed Rakurai, a prototype portable anti‑drone jammer that can transmit across multiple, widely separated frequency bands simultaneously. Rakurai is currently at Technology Readiness Level 5 following initial demonstrations and the company is preparing for field testing. Millibeam’s approach emphasizes custom, ground‑up design of chips and antennas to overcome weight, power and frequency limitations of off‑the‑shelf systems. The startup secured $4.6 million in federal grants to develop the next‑generation semiconductor chipsets and related technology supporting Rakurai. Main Sequence has publicly endorsed the company’s integrated technical approach, signaling investor interest alongside government support. Millibeam positions its work as building sovereign RF capability for Australian defence and critical‑infrastructure protection.

Total raised

$8M

Funding rounds

2

Latest round

Grant

Latest activity

Aug 2026