AGITATE is currently the size of a five pence piece. A small dielectric is charged, and when shaken the tag generates a radio signal that can be tracked through walls and up to 20 kilometres in built-up areas, with an estimated range of 200 kilometres in free space.
AGITATE requires no battery as shaking it converts mechanical energy into radio pulses, rather like a dynamo that uses mechanical energy to power bicycle lights.Roke’s research and design team anticipate that AGITATE could be produced for a few pence per unit and would have a broad range of tracking applications. The research and development team has already completed UK trials across 26 kilometres of variable terrain. Further Roke investment is focussed on reducing AGITATE’s footprint and increasing RF output power even further.
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