2.45 GHz power and data transmission for a low-power autonomous sensors platform

Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758) Pub Date : 2004-08-09 DOI:10.1145/1013235.1013303

S. Gregori, Yunlei Li, Huijuan Li, Jin Liu, F. Maloberti

引用次数: 42

Abstract

This paper describes a power conversion and data recovery system for a microwave powered sensor platform. A patch microwave antenna, a matching filter and a rectifier make the system front-end and implement the RF-to-DC conversion of power carrier. The efficiency of the power conversion is as high as 47% with an input power level 250 /spl Omega/W at 2.45 GHz. Then, a 0.18 /spl Omega/m CMOS integrated circuit extracts the clock and the digital data. A modified pulse amplitude modulation scheme is used to modulate the data on the 2.45 GHz carrier frequency for combined data and power transmission; this scheme allows very low power consumption of the entire IC to be less than 10 /spl Omega/W and making the system suitable for an autonomous wireless connected sensor module.

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2.45 GHz功率和数据传输，用于低功耗自主传感器平台

介绍了一种用于微波动力传感器平台的功率转换和数据恢复系统。贴片微波天线、匹配滤波器和整流器构成系统前端，实现了功率载波的rf - dc转换。在2.45 GHz时，当输入功率为250 /spl ω /W时，功率转换效率高达47%。然后，0.18 /spl ω /m CMOS集成电路提取时钟和数字数据。采用改进的脉冲调幅方案对2.45 GHz载波频率上的数据进行调制，实现数据与功率的联合传输;该方案允许整个IC的功耗非常低，低于10 /spl ω /W，使系统适合自主无线连接的传感器模块。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 2004 International Symposium on Low Power Electronics and Design (IEEE Cat. No.04TH8758)

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