A 0.2V Energy-Harvesting BLE Transmitter with a Micropower Manager Achieving 25% System Efficiency at 0dBm Output and 5.2nW Sleep Power in 28nm CMOS

📋 论文概要

本文提出了一款0.2V能量收集蓝牙低功耗（BLE）发射机，集成了微功耗管理器，在0dBm输出功率下实现了25%的系统效率，解决了低电压环境（如室内太阳能、热梯度）下能量收集效率低和系统集成度差的问题。

💡 主要创新点

• 提出了一种微功耗管理器，能够在低至0.2V的输入电压下高效工作，无需额外的升压转换器和稳压器，从而提高了系统效率和集成度。
• 实现了在0dBm输出功率下25%的系统效率，显著优于传统能量收集BLE发射机。

🏷 关键词

📄 原文摘要

Rui P. Martins1,2 University of Macau, Macau, China Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 Massive deployment of wireless sensor tags (e.g. iBeacon) will only happen if batteries and their replacement effort are avoided. Self-powering by harvesting the ambient energies like indoor solar and thermal gradient is prospective [1], but their inconstant sub-0.5V output hinders their utility. Adding boost converters and regulators inevitably worsens the system efficiency and integration level. This paper reports an energy-harvesting Bluetooth Low-Energy (BLE) transmitter (TX) (Fig. 28.5.1). It features a fully integrated micropower manager (μPM) to limit the sleep power and tolerate variation of the energy-source voltage (VDD,EH) down to 0.2V. U=An ultra-low-voltage (ULV) VCO and PA, and a passive-intensive type-I PLL are proposed. Fabricated in 28nm CMOS, the TX exhibits a 25% system

👥 作者与机构

Jun Yin1, Shiheng Yang1, Haidong Yi1, Wei-Han Yu1, Pui-In Mak1,