DC-pass filter design with notch filters superposition for CPW rectenna at low power level

IEEE Radio and Antenna Days of the Indian Ocean 2015

无线电电子学

Rivière, J.^1 ; Douyère, A.^1 ; Alicalapa, F.^1 ; Lan Sun Luk, J.-D.^1

Energy, Electronics and Processes Laboratory (LE2P), University of la Reunion, St Denis

RI, United States^1

关键词: Active devices;    Conductive lines;    Coplanar waveguide technology;    Direct current;    Filter designs;    Ground planes;    Harmonic balance simulations;    Radio-frequency energy harvesting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/120/1/012008/pdf
DOI  :  10.1088/1757-899X/120/1/012008

来源: IOP

【 摘 要 】

In this paper the challenging coplanar waveguide direct current (DC) pass filter is designed, analysed, fabricated and measured. As the ground plane and the conductive line are etched on the same plane, this technology allows the connection of series and shunt elements to the active devices without via holes through the substrate. Indeed, this study presents the first step in the optimization of a complete rectenna in coplanar waveguide (CPW) technology: key element of a radio frequency (RF) energy harvesting system. The measurement of the proposed filter shows good performance in the rejection of F0=2.45 GHz and F1=4.9 GHz. Additionally, a harmonic balance (HB) simulation of the complete rectenna is performed and shows a maximum RF-to-DC conversion efficiency of 37% with the studied DC-pass filter for an input power of 10 μW at 2.45 GHz.