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

被引：28
|
作者：
Gregori, S [1 ]
Li, YL [1 ]
Li, HJ [1 ]
Liu, J [1 ]
Maloberti, F [1 ]
机构：
[1] Univ Texas, Dept Elect Engn, Richardson, TX 75083 USA
来源：
ISLPED '04: PROCEEDINGS OF THE 2004 INTERNATIONAL SYMPOSIUM ON LOW POWER ELECTRONICS AND DESIGN | 2004年
关键词：
wireless sensor; RF to DC power conversion; microwave power transmission; low power clock and data recovery;
D O I：
10.1145/1013235.1013303
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
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 OmegaW at 2.45 GHz. Then, a 0.18 Omegam 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 OmegaW and making the system suitable for an autonomous wireless connected sensor module.
引用
收藏
页码：269 / 273
页数：5
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