An Efficient Dual-Circularly Polarized Rectenna for RF Energy Harvesting in The 2.45 GHZ ISM Band

Walid Haboubi; Hakim Takhedmit; Jean-Daniel Lan Sun Luk; Salah-Eddine Adami; Bruno Allard; François Costa; Christian Vollaire; Odile Picon; Laurent Cirio

An Efficient Dual-Circularly Polarized Rectenna for RF Energy Harvesting in The 2.45 GHZ ISM Band

Walid Haboubi ¹ Hakim Takhedmit ¹ Jean-Daniel Lan Sun Luk ² Salah-Eddine Adami ³ Bruno Allard ⁴ François Costa ⁵ Christian Vollaire ³ Odile Picon ¹ Laurent Cirio ¹

1 ESYCOM - Electronique, Systèmes de communication et Microsystèmes

2 LE2P - Laboratoire d'Energétique, d'Electronique et Procédés

3 MIS - Ampère, Département Méthodes pour l'Ingénierie des Systèmes

4 EE - Ampère, Département Energie Electrique

5 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie

Abstract : This paper reports a 2.45 GHz, low power dual circularly polarized (DCP) and dual access rectenna. It contains two dc-recombined rectifiers and a cross-slot coupled square patch antenna fed by a microstrip line. A judicious dc recombination scheme allows to minimize the RF power imbalance between accesses caused by multipath effects and consequently arbitrary polarized incident waves. The proposed rectenna is then able to harvest linearly polarized, right-hand circularly polarized (RHCP) and left-hand circularly polarized (LHCP) electromagnetic waves, with nearly stable performances. The rectenna has been optimized at -15 dBm per access and dedicated to remote and contactless supply low consumption sensors. It has been experimentally tested with very low power densities from 0.057 μW/cm2 (Erms=0.46 V/m) to 2.3 μW/cm2 (Erms=2.95 V/m). At 1.49 μW/cm2 (-15 dBm on each rectifier), the structure exhibits an output dc voltage and a global efficiency of 189 mV and 37.7%, respectively when the azimuthal angle (Φ) of the incident field is equal to 0°. Due to the nearly constant total gain of the DCP antenna and an appropriate dc recombination of the two rectifiers, the global efficiency slightly varies between 37.7% and 41.4% when the azimuthal angle (Φ) varies between -90 and 90°.

Keywords : Electromagnetic wave RF ENERGY Low power dual circularly polarized (DCP) Dual access rectenna Rectenna

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Journal articles

Domain :

Physics [physics]

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http://hal.univ-reunion.fr/hal-01691674
Contributor : Marie-Laure Perony-Charton <>
Submitted on : Wednesday, January 24, 2018 - 2:39:02 PM
Last modification on : Tuesday, May 21, 2019 - 11:54:56 AM
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An Efficient Dual-Circularly Polarized Rectenna for RF Energy Harvesting in The 2.45 GHZ ISM Band

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