Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6879503 | AEU - International Journal of Electronics and Communications | 2018 | 9 Pages |
Abstract
In this paper, a compact planar CPW-fed antenna operating over the four frequency bands is proposed for RF energy harvesting applications. The proposed antenna includes five radiating elements and a stepped ground plane, occupies a total area of 48 à 42â¯mm2. By virtue of stepped ground plane, the antenna exhibits a better impedance match compared to the antenna with the full ground plane. The measured |S11| better than â10â¯dB is obtained at the frequency bands GSM-900, GSM-1800, Wi-Fi 2.1â¯GHz and Bluetooth (2.4â¯GHz), showing its suitability for RF energy harvesting application. For this to be feasible, the developed antenna is matched with the rectifier at four desired frequencies using a compact quad-band matching network. The merit of the proposed rectifier circuit is it can be extended for n number of frequency the band by using only 3n-1 number of lumped elements. To validate the design method experimentally, a prototype of a dual-band rectifier is also fabricated. The measured result demonstrates that the proposed dual-band rectifier circuit achieved the peak efficiency of 42% and 38% for 0.9 and 2.1â¯GHz, respectively at a load impedance of 4.7â¯kΩ.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Sachin Agrawal, Manoj Singh Parihar, Pravin Neminath Kondekar,