clive.boyd
High Acuity Virtex6 HS02 Headset with External Drive Coil
Image of the bottom of the HS02 headset showing a High-Q Tx Coil interface. Three (3) coil drivers were removed from HS01 requirements and subsequently replaced with a (fallback) single Tx transmit coil driver on HS02 to make room for a galvanically isolated percutaneous plug interface. The loan planar Tx coil is driven via a 50MHz DDS that includes programmable quadrature phase and dual frequency high-speed modulation control lines via feed directly from the Virtex6 FPGA. Also included in this power transfer block are voltage and current monitoring circuits including logarithmic impedance and phase converter IC providing precision monitoring of transformer load characteristics
High Acuity Virtex6 HS02 Headset with External Drive Coil
Image of the bottom of the HS02 headset showing a High-Q Tx Coil interface. Three (3) coil drivers were removed from HS01 requirements and subsequently replaced with a (fallback) single Tx transmit coil driver on HS02 to make room for a galvanically isolated percutaneous plug interface. The loan planar Tx coil is driven via a 50MHz DDS that includes programmable quadrature phase and dual frequency high-speed modulation control lines via feed directly from the Virtex6 FPGA. Also included in this power transfer block are voltage and current monitoring circuits including logarithmic impedance and phase converter IC providing precision monitoring of transformer load characteristics