RF-powered variable duty cycle wireless sensor

Author

Costinett, Daniel ; Falkenstein, Erez ; Zane, Regan ; Popovic, Zoya

Author_Institution

Dept. of Electr., Comput. & Energy Eng., Univ. of Colorado, Boulder, CO, USA

fYear

2010

fDate

28-30 Sept. 2010

Firstpage

41

Lastpage

44

Abstract

This paper discusses a low-power 2.4GHz ISM band wireless sensor based on commercial components for sensing and data transmission. The sensor is powered wirelessly in the 5.8-GHz ISM band through an integrated dual-polarization antenna, rectifier and power management module. Since the unit is intended for mobile use, the variable available power is monitored, and the duty cycle for wireless data transmission adaptively adjusted through use of a low-power microcontroller and a custom power management circuit. In sleep mode, the circuit consumes 1μA at 2.5V.

Keywords

data communication; microcontrollers; multifrequency antennas; rectifiers; wireless sensor networks; ISM band wireless sensor; RF-powered variable duty cycle wireless sensor; commercial components; custom power management circuit; frequency 2.4 GHz; frequency 5.8 GHz; integrated dual-polarization antenna; low-power microcontroller; power management module; rectifier; sleep mode; wireless data transmission;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2010 European

Conference_Location

Paris

Print_ISBN

978-1-4244-7232-1

Type

conf

Filename

5616367