⚡ 本页包含 AI 生成的分析内容，仅供参考
该论文提出一种面积仅1.2cm²、工作在2.4GHz的自振荡整流天线，通过联合优化电小天线和整流器电路，实现了-34.5dBm的高灵敏度，从而延长无线供电传感器的通信距离。解决了传统整流器灵敏度受限导致工作范围受限的问题。
Ubiquitous Internet-of-Everything (IoE) applications require low-cost, miniature sensors with long lifetimes. Wirelessly-powered ICs that harvest energy from an RF beacon or from existing wireless signals can address challenges associated with battery size, capacity and replacements [1-5]. Given FCC transmit power limits, the operating range of wirelessly-powered sensors is limited by rectifier sensitivity rather than by communication link budgets. In this work, we present area-constrained antenna-rectifier architectures that leverage electrically-small antennas and rectifier circuits to achieve -34.5dBm sensitivity for 1.6V output with 1.8MΩ load (CC topology) and -24dBm sensitivity for 2.5V output with 100KΩ load (CP topology), representing a >5× improvement in sensitivity (>2× improvement in range) over current state-of-the-art and >1V output voltage [1]. Notably, this improvement is obtained even for cold-start with the typical rectifier
Jian Kang, Patrick Yin Chiang, Arun Natarajan
Oregon State University, Corvallis, OR