Design of a ferrite rod antenna for harvesting energy from medium wave broadcast signals

The Journal of Engineering

Ivan Ivanov¹  Tahmina Ajmal¹  David Jazani¹  Vladimir Dyo¹  Ben Allen¹ 

[1] Centre for Wireless Research, University of Bedfordshire, Park Square, Luton LU1 3JU, UK

关键词: medium wave broadcast transmissions;    ferrite rod antenna;    distance 9 km;    power 1 mW;    batteries;    RF energy harvesting;    low-power sensing;    maintenance costs;    medium wave broadcast signals;    smart meters;    antenna design;    radio frequency energy harvesting;   

DOI  :  10.1049/joe.2013.0126

学科分类：工程和技术（综合）

来源: IET

【 摘 要 】

Radio frequency (RF) energy harvesting is an emerging technology that has the potential to eliminate the need for batteries and reduce maintenance costs of sensing applications. The antenna is one of the critical components that determines its performance and while antenna design has been well researched for the purpose of communication, the design for RF energy harvesting applications has not been widely addressed. The authors present an optimised design for such an antenna for harvesting energy from medium wave broadcast transmissions. They derive and use a model for computing the optimal antenna configuration given application requirements on output voltage and power, material costs and physical dimensions. Design requirements for powering autonomous smart meters have been considered. The proposed approach was used to obtain the antenna configuration that is able to deliver 1 mW of power to 1 kΩ load at a distance of up to 9 km, sufficient to replace batteries on low-power sensing applications. Measurements using a prototype device have been used to verify the authors simulations.

【 授权许可】

CC BY