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Design challenges

  1. Bursts above 50 W and 1000 Vpp at the antenna: a power stage with 600 V MOSFETs and a safe failure mode.
  2. Recovering 100 µVpp replies on the same antenna: a receive path that withstands 1000 Vpp during transmission.
  3. Better signal-to-noise ratio: transmit, power and digital logic kept apart from the analog chain across 6 layers.

Key components

STM32H7Main MCU
STF13N60M2600 V power MOSFET
INA821 · AD8338Analog receive chain
LM51231Programmable boost controller