scholarly journals Self-Adaptive Rectenna with High Efficiency over a Wide Dynamic Range for RF Energy Harvesting Applications

2021 ◽  
pp. 67-75
Author(s):  
Eman M. Abdelhady ◽  
◽  
Hala M. Abdelkader ◽  
Amr A. Al-Awamry
Keyword(s):  
Power Distribution ◽  
Adaptive Design ◽  
High Efficiency ◽  
Dynamic Range ◽  
Power Level ◽  
Input Power ◽  
Distribution Method ◽  
High Input Power ◽  
Wide Range ◽  
Voltage Doubler

This paper presents a novel simple adaptive and efficient rectenna with automatic power distribution to achieve high radio frequency-direct current (RF-DC) power conversion efficiency (PCE) over a wide range of RF input power. This design employs two rectifier paths operating at low and high-power levels, respectively. Automatic power distribution method exploits the power-dependent input impedance of the rectifier and routes the RF input power into the assigned path according to the input power level. A distinctive enhancement in the rectifier dynamic range is achieved when dividing the high path power equally into two or more parallel diode cells, which helps the high path to camouflage the diode breakdown voltage in case of high input power level. The proposed adaptive design applies two different rectifier topologies, one by using shunt diode topology and the other by using voltage doubler topology at 2.45 GHz. Simulated PCE of this work is kept above 50% over a range of 25.1 dBm from -5.7 to 19.4 dBm of RF input power using shunt diode topology and over a range of 30 dBm from -6.3 to 23.7 dBm of RF input power using voltage doubler topology.

scholarly journals Simple Adaptive Rectifier with High Efficiency over a Range of 21 dBm Input Power for RF Energy Harvesting Applications

2021 ◽  
pp. 8-15
Author(s):  
Eman M. Abdelhady ◽  
◽  
Hala M. Abdelkader ◽  
Amr A. Al-Awamry
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Breakdown Voltage ◽  
Adaptive Design ◽  
High Efficiency ◽  
Power Level ◽  
Input Power ◽  
Rf Energy Harvesting ◽  
High Input Power ◽  
Rf Energy

This paper presents a novel simple adaptive and efficient rectifier for Radio Frequency (RF) energy harvesting applications. Traditional rectifiers have maximum RF-DC Power Conversion Efficiency (PCE) over a narrow range of RF input power due to diode breakdown voltage restrictions. The proposed adaptive design helps to extend the PCE over a wider range of RF input power at 2.45GHz using a simple design. Two alternative paths arecontrolled depending on the RF input power level. Low input power levels activate the first path connected to a single rectifier; low power levels make the diode operate below its breakdown voltage and therefore avoiding PCE degradation. High input power levels activate the second path dividing it into three rectifiers. This keeps input power at each rectifier at a low power level to avoid exceeding the diode break down voltage. Simulated PCE of this work is kept above 50% over a range of 21.4 dBm input power from -0.8dBm to 20.6dBm.

scholarly journals Compact Rectifier Circuit Design for Harvesting GSM/900 Ambient Energy

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1614
Author(s):  
Surajo Muhammad ◽  
Jun Jiat Tiang ◽  
Sew Kin Wong ◽  
Amjad Iqbal ◽  
Mohammad Alibakhshikenari ◽  
...  
Keyword(s):  
Circuit Design ◽  
Communication Systems ◽  
Path Loss ◽  
Input Power ◽  
Wireless Communication Systems ◽  
Rf Power ◽  
Total Size ◽  
High Input Power ◽  
Wide Range ◽  
Rf Energy

In this paper, a compact rectifier, capable of harvesting ambient radio frequency (RF) power is proposed. The total size of the rectifier is 45.4 mm × 7.8 mm × 1.6 mm, designed on FR-4 substrate using a single-stage voltage multiplier at 900 MHz. GSM/900 is among the favorable RF Energy Harvesting (RFEH) energy sources that span over a wide range with minimal path loss and high input power. The proposed RFEH rectifier achieves measured and simulated RF-to-dc (RF to direct current) power conversion efficiency (PCE) of 43.6% and 44.3% for 0 dBm input power, respectively. Additionally, the rectifier attained 3.1 V DC output voltage across 2 kΩ load terminal for 14 dBm and is capable of sensing low input power at −20 dBm. The work presents a compact rectifier to harvest RF energy at 900 MHz, making it a good candidate for low powered wireless communication systems as compares to the other state of the art rectifier.

scholarly journals High-efficiency D-TV energy harvesting system for low-input power

2016 ◽  
Vol 3 (1) ◽  
pp. 34-42 ◽  
Author(s):  
Tiago Moura ◽  
Nuno Borges de Carvalho ◽  
Pedro Pinho
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Field Measurements ◽  
Sine Wave ◽  
Input Power ◽  
Digital Television ◽  
Radio Frequency Energy ◽  
Television Signal ◽  
Voltage Doubler ◽  
Energy Harvesting System

In this work, a high-efficiency radio-frequency energy-harvesting system that takes use of the Portuguese Digital Television signal (750–758 MHz) to obtain DC power is proposed. To be useful, it is optimized to operate at low-power conditions. For the rectifier, three different solutions are presented: a single-series diode, a single-shunt diode, and a voltage-doubler configuration. The efficiency is similar for the three rectifiers – about 54% with a sine-wave excitation and −10.5 dBm of input power. Field measurements with the voltage-doubler have shown 63% efficiency for the same input power.

Two-Stage Isolated Switch-Mode Power Supply With High Efficiency and High Input Power Factor

2010 ◽  
Vol 57 (11) ◽  
pp. 3754-3766 ◽  
Author(s):  
Carlos Alberto Gallo ◽  
Fernando Lessa Tofoli ◽  
João Antonio Correa Pinto
Keyword(s):  
Power Factor ◽  
Power Supply ◽  
High Efficiency ◽  
Input Power ◽  
High Input ◽  
Two Stage ◽  
Switch Mode Power Supply ◽  
High Input Power ◽  
Switch Mode

scholarly journals RF Energy Scavenging With a Wide-Range Input Power Level

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 173450-173462
Author(s):  
Kyrillos K. Selim ◽  
Shaochuan Wu ◽  
Demyana A. Saleeb
Keyword(s):  
Power Level ◽  
Input Power ◽  
Energy Scavenging ◽  
Wide Range ◽  
Rf Energy

A Wide-Bandwidth Digital Filterbank

1996 ◽  
Vol 160 ◽  
pp. 25-26
Author(s):  
R. S. Foster ◽  
P. S. Ray ◽  
S. C. Lundgren ◽  
D. C. Backer ◽  
M. R. Dexter ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Complete System ◽  
Power Level ◽  
Input Power ◽  
Maximum Speed ◽  
Search Mode ◽  
Data Acquisition Software ◽  
System Clock ◽  
Penn State ◽  
The University

The Navy/Berkeley Pulsar Processor (NBPP) is a digital filterbank which is based on the successful Digital Filter Boards constructed for the University of California Coherent Dispersion Removal Processor (CDRP). One 9U VME crate holds a complete system with 96 channels × 2 polarizations. Running at maximum speed, the full crate will cover 1.8 MHz/channel = 172 MHz total bandwidth. Narrower bandwidths are available by running the system clock slower. The digitization has 4 bits of precision for good dynamic range and minimal quantization effects. The output data has variable time resolution; typically 50-100μs for search mode, and 2.4μs for timing mode. A flexible analog mixer/filter front end provides variable width filters, programmable attenuators, and input power level measurements, along with IF-to-baseband mixing and amplification capability. Data acquisition software running on a Sun Sparcstation-20 is based on software developed for controlling the Penn State Pulsar Machine (PSPM).

A Wide Dynamic Range Rectifier Array Based on Automatic Input Power Distribution Technique

2020 ◽  
Vol 30 (4) ◽  
pp. 437-440 ◽  
Author(s):  
Pengde Wu ◽  
Yi-dan Chen ◽  
Wenshen Zhou ◽  
Zhi Hua Ren ◽  
Shao Ying Huang
Keyword(s):  
Power Distribution ◽  
Dynamic Range ◽  
Input Power ◽  
Wide Dynamic Range
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