A Low-Power PLL-Less Wideband OOK Wireless Neural-Signal Transmitter for Miniaturized Neural Interfaces with In Vivo Validation in Freely Moving Mice

Description

Guijun Shu, Fangning Zhang, Chuang Yang, Hongyu Jia, Xiao Wang, and Ming Yin present a tiny wireless transmitter that sends brain signals from freely moving animals, in 2026 work. Recording many brain channels at once needs a fast link that stays light on power and small in size. The chip drops a power-hungry timing circuit used in most designs and instead pairs a free-running oscillator with a simple on-off signal scheme.

Built with a standard chip process, the device drew modest power and reached raw input speeds well above the stream needed for live work. Error rates stayed workable at the speeds tested. Linked to a 128-channel recording chip in adult mice, it sent hippocampus spike and rhythm signals wirelessly that matched wired readings. The authors say the design suits untethered brain recording rigs that must stay small.

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Source: https://europepmc.org/article/MED/PMC13510494