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An ultra low power 400 MHz 128 kbps-FSK RF transceiver SoC which consumes less than 2 mA from a 1 V supply was implemented in a 0.18 mum CMOS technology for wireless medical applications and applied to a wireless hearing aid communication system, a new generation of hearing aid device. The transceiver was implemented fully differentially and directly matched to a non-50ohm miniaturized dipole antenna...