A 540 µW RF wireless receiver assisted by RF blocker energy harvesting for IoT applications with +18 dBm OB-IIP3

This paper introduces a wireless receiver system that harvests energy from the out-of-band RF blockers which enables sustainable operation and extends battery life for IoT applications. Operating at 900 MHz band and fabricated in CMOS 180 nm, the proposed RF receiver system architecture can operate at the presence of unavoidable high out-of-band blockers (≈0 dBm) yet consumes 534 µW. Moreover, 46% of this dc power is extracted from existing blockers via RF energy harvesting techniques.