Abstract
In this paper, we present a low-power event-driven receiver intended for miniaturized biomedical implants. The fully integrated system can operate by power harvesting from electromagnetic fields using a radio frequency-to-dc converter or through a 0.5-V voltage supply such as a rechargeable battery. Without any external component and calibration overhead, the proposed double-mixing receiver is operating at a frequency of 915-MHz industrial, scientific, and medical band and is robust to process, supply voltage, and body temperature variations. The proof-of-concept receiver is designed and implemented in a 0.13- $\mu \text{m}$ CMOS technology. The system occupies a silicon area of 0.75 mm2 and consumes only 9.1- $\mu \text{W}$ power while achieving a sensitivity of −48 and −39 dBm at the data rate of 1 and 100 kb/s, respectively.
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