A 2mW CMOS MICS-band BFSK transceiver with reconfigurable antenna interface

Abstract

-A 0.18μm CMOS MICS-band transceiver with a reconfigurable RF front-end is presented, reusing the same circuit core for super-regenerative wake-up receiver, receivemode LNA, and transmit power amplifier, eliminating the need for an external T/R switch. The transceiver uses an All Digital Frequency Locked-Loop (ADFLL) for LO signal generation and transmitter's modulation. The OOK wake-up receiver sensitivity is -80dBm @ 50kbps, while the BFSK receiver's sensitivity is -97dBm for a 75kbps signal and 2mW power consumption. The nominal output power of the transmitter is -5dBm.Index Terms -Medical Implantable Communication Services (MICS), implanted wireless sensor, ultra low power transceiver.

Design of Radio-Frequency Transceivers for Wireless Sensor Networks

“…The transceivers work at several GHz with low energy per bit. Besides, since the power consumption of OOK transceivers can be made very small, some recently works design OOK receivers for wake-up usages (Pletcher et al, 2009;Seungkee et al, 2010). The power consumption of these wake-up receivers can be as low as a few tens of µW.…”