A +10dBm 2.4GHz Transmitter with sub-400pW Leakage and 43.7% System Efficiency

📋 论文概要

该论文提出了一种用于极低占空比无线传感系统的2.4GHz发射机，通过超低泄漏设计实现了亚400pW的待机功耗，并在发射时达到+10dBm输出功率和43.7%的系统效率，解决了能量采集系统中待机功耗过高的问题。

💡 主要创新点

• 采用超低泄漏电路架构，使发射机在待机状态下功耗低于400pW，适合极低占空比应用。
• 通过高效率功率放大器设计和系统级优化，在+10dBm输出功率下实现43.7%的系统效率。

🏷 关键词

📄 原文摘要

Extreme energy constraints inherent in many exciting new wireless sensing applications (such as [1-3]) virtually dictate that such systems operate with extremely low duty cycles, harvesting and storing energy over long periods of time before waking up to perform brief measurement and communication tasks. However, such duty cycling only works if the sleep power of the system is less than the average power available from the power source, which may only be as much as a few nA. In this work, we present an RF transmitter designed to operate in an extremely-low-duty-cycle industrial monitoring system. The primary challenges are achieving high efficiency in the active mode while transmitting as high as +10dBm and simultaneously minimizing the leakage during the sleep mode. We address these in a +10dBm Bluetooth Low Energy (BLE) transmitter test-chip through 1) low voltage design (0.68V) for switching

👥 作者与机构

Arun Paidimarri, Nathan Ickes, Anantha P. Chandrakasan

Massachusetts Institute of Technology, Cambridge, MA