Analysis of Rectifying Circuit to Improve RF-DC Conversion Efficiency for Radio Frequency Energy Harvesting

2015 ◽  
Vol 21 (1) ◽  
pp. 15-19
Author(s):  
Z. Zakaria ◽  
M. A. M. Said ◽  
M. Abu ◽  
M. N. Husain ◽  
E. Amilhajan ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Conversion Efficiency ◽  
Radio Frequency Energy

scholarly journals Design of Ultra Wideband Rectenna for Ambient RF Energy Harvesting Applications

2019 ◽  
Vol 8 (3) ◽  
pp. 2155-2158
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Conversion Efficiency ◽  
Dielectric Substrate ◽  
Ultra Wideband ◽  
Low Loss ◽  
Radio Frequency Energy ◽  
Microstrip Patch ◽  
Rf Signals ◽  
L Band

In this paper a single fed microstrip patch ultra-wideband rectenna for harvesting ambient radio frequency energy is presented. The rectenna comprises of a rectangular shaped radiating patch operating at L band frequencies. The rectifier circuit is placed in the same plane of radiating patch to minimize the overall rectenna profile. The rectenna is modelled and are fabricated on low loss roger dielectric substrate. Measured results shows that the rectenna attains a maximum gain of 5 dB in the operating L band with maximum RF conversion efficiency of 81%. The rectenna designed is appropriate for harvesting wireless RF signals operating in L band.

An Antipodal Vivaldi Antenna with Elliptical Slots for Low-Cost Rectenna Applications

2021 ◽  
pp. 2150248
Author(s):  
E. T. Pereira ◽  
H. P. Paz ◽  
V. S. Silva ◽  
E. V. V. Cambero ◽  
I. R. S. Casella ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Radio Frequency ◽  
Conversion Efficiency ◽  
Output Voltage ◽  
Low Cost ◽  
Power Input ◽  
Maximum Output ◽  
Radio Frequency Energy ◽  
Vivaldi Antenna

In this paper, a low-cost rectenna based on an antipodal Vivaldi antenna (AVA) with elliptical slots (AVA-ES) is developed and analyzed. The design of AVA-ES, when compared to a reference AVA, presents significant improvements in directivity and gain (58% at 2.45[Formula: see text]GHz for both), evidencing its advantages for using in rectennas. The proposed rectenna prototype presents satisfactory results at 2.45[Formula: see text]GHz, such as conversion efficiency for low-power input levels (27% at [Formula: see text]10[Formula: see text]dBm) and maximum output voltage (550[Formula: see text]mV), that supports its use for radio-frequency energy harvesting (RFEH).

scholarly journals A Survey of RF Energy Harvesting Circuits

2021 ◽  
Vol 10 (7) ◽  
pp. 99-106
Author(s):  
Achille Fumtchum* ◽  
Pierre Tsafack ◽  
Emmanuel Tanyi ◽  
Florin Hutu ◽  
Guillaume Villemaud
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Conversion Efficiency ◽  
Frequency Band ◽  
State Of The Art ◽  
The Other ◽  
Maximum Efficiency ◽  
Rf Energy Harvesting ◽  
Radio Frequency Energy ◽  
Harvesting Systems

The aim of this work is, on one hand, to review the state of the art of the architectures and diodes used in radio-frequency energy harvesting systems, the idea here is to review the most recent works, as well as their characteristics, which include frequency, type of diode used, topology, maximum efficiency and corresponding power, and on the other hand to carry out simulations to determine the most appropriate case for any further work in the field. After having determined the most common topologies, we used the main known radio-frequency diodes to characterize them in a first step, clearly a process of comparing the results of the simulations of the different topologies is done by initially considering an identical frequency. and afterward determine the effect of frequency band on their conversion efficiency.

A Dual Frequency RF-DC Rectifier Circuit with a Low Input Power for Radio Frequency Energy Harvesting

2019 ◽  
Vol 28 (03) ◽  
pp. 1950048 ◽  
Author(s):  
Mohamed Mokhlès Mnif ◽  
Hassene Mnif ◽  
Mourad Loulou
Keyword(s):  
Energy Harvesting ◽  
Radio Frequency ◽  
Threshold Voltage ◽  
Output Voltage ◽  
Alternative Energy ◽  
Input Power ◽  
Design System ◽  
Low Input ◽  
Rectifier Circuit ◽  
Radio Frequency Energy

The energy-harvesting radio frequency (RF) can be an attractive alternative energy capable of replacing all or some of the board batteries. The RF waves are present in several high frequencies ([Formula: see text] GHz) and at low power (a few [Formula: see text]W). An energy-harvesting circuit designed must provide 1[Formula: see text]V voltage at minimum that is able to operate an actuator or a sensor. The RF-DC rectifier is the main component of an energy-harvesting circuit. This paper presents a new design RF-DC rectifier circuit using the MOSFET transistors, the capacitors and the inductors. Our proposed circuit is a combination of an Inductor–Capacitor–Inductor–Capacitor (LCLC) serie-parallel resonant tank (SPRT) and rectifier cascade using the Dynamic threshold Voltage Cancellation (DVC) and the technique of the Internal threshold Voltage Cancellation (IVC). Our proposed circuit operates in dual frequencies [Formula: see text][Formula: see text]GHz and [Formula: see text][Formula: see text]GHz with a low input power [Formula: see text][Formula: see text][Formula: see text]W ([Formula: see text][Formula: see text]dbm) and [Formula: see text][Formula: see text][Formula: see text]W ([Formula: see text][Formula: see text]dbm), respectively. This circuit gives a Power Conversion Efficiency (PCE) of 56.9% and an output voltage [Formula: see text][Formula: see text]V for the frequency 2.543[Formula: see text]GHz and a PCE of 62.6% and an output voltage [Formula: see text][Formula: see text]V for the frequency 4[Formula: see text]GHz. The pre-layout simulations were performed using the Advanced Design System (ADS) and the technology used is CMOS 0.18[Formula: see text][Formula: see text]m from TSMC. The simulations were performed on the proposed circuit composed by three stages.

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