Design of RF Rectenna on Thin Film to Power Wearable Electronics

2020 ◽  
pp. 25-39
Author(s):  
Naresh B. ◽  
Vinod Kumar Singh ◽  
Virendra Kumar Sharma
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
System Integration ◽  
Impedance Matching ◽  
Dual Band ◽  
Microwave Antenna ◽  
Wearable Electronics ◽  
Amorphous Silicon Solar Cell ◽  
Voltage Doubler ◽  
Flexible Solar Cell

This chapter reports a hybrid wearable energy harvesting system. Integration of microwave antenna on thin film amorphous silicon solar cell creates a hybrid system that can harvest both the solar and microwave energies. The antenna designed on solar cell will harvest the microwave energy at dual frequencies 1.85 GHz and 2.45 GHz with an effective return loss of 28dB and 27dB respectively. A complete hybrid harvesting system consist of a flexible solar cell, antenna, voltage doubler, and impedance matching dual band filter. The rectifier, designed on a rigid glass-reinforced epoxy substrate, is a voltage doubler and a matching circuit is designed by microstrip lines is used.

Integration of RF rectenna with thin film solar cell to power wearable electronics

2020 ◽  
pp. 1-12
Author(s):  
B. Naresh ◽  
Vinod Kumar Singh ◽  
V. K. Sharma
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Thin Film Solar Cell ◽  
Microstrip Antenna ◽  
Power Level ◽  
Input Power ◽  
Dual Band ◽  
Wearable Electronics ◽  
Voltage Doubler

Abstract This paper reports an integration of dual band microstrip antenna with thin film amorphous silicon solar cell which creates a wearable system to harvest microwave energy. The multiple layers in the encapsulation of the thin film solar cell are used as a substrate for microstrip antenna. The rectifier and matching circuit are designed on cotton jeans material and the whole system is mechanically supported by the foam of 5 mm thick. The performance of the antenna is studied for the mechanical bending condition. The device has maintained good power conversion efficiency. The efficiency of the voltage doubler is tested by varying radio frequency power levels from −30 to10 dBm. The voltage doubler conversion efficiency at 1.85 and 2.45 GHz are 58 and 43%, respectively, for a load of 7.5 kΩ for an input power level of −5 dBm.

Modeling of Advanced Light Trapping Approaches in Thin-Film Silicon Solar Cells

2011 ◽  
Vol 1321 ◽  
Author(s):  
Miro Zeman ◽  
Olindo Isabella ◽  
Klaus Jäger ◽  
Pavel Babal ◽  
Serge Solntsev ◽  
...  
Keyword(s):  
Thin Film ◽  
Zinc Oxide ◽  
Solar Cells ◽  
Solar Cell ◽  
Light Trapping ◽  
Spherical Particles ◽  
Silicon Solar Cells ◽  
Amorphous Silicon Solar Cell ◽  
Thin Film Silicon ◽  
Negative Effect

ABSTRACTDue to the increasing complexity of thin-film silicon solar cells, the role of computer modeling for analyzing and designing these devices becomes increasingly important. The ASA program was used to study two of these advanced devices. The simulations of an amorphous silicon solar cell with silver nanoparticles embedded in a zinc oxide back reflector demonstrated the negative effect of the parasitic absorption in the particles. When using optical properties of perfectly spherical particles a modest enhancement in the external quantum efficiency was found. The simulations of a tandem micromorph solar cell, in which a zinc oxide based photonic crystal-like multilayer was incorporated as an intermediate reflector (IR), demonstrated that the IR resulted in an enhanced photocurrent in the top cell and could be used to optimize the current matching of the top and bottom cell.

Fabrication and characterization of flexible solar cell from electrodeposited Cu2O thin film on plastic substrate

Solar Energy ◽  
2015 ◽  
Vol 122 ◽  
pp. 1193-1198 ◽  
Author(s):  
Mahmoud Abdelfatah ◽  
Johannes Ledig ◽  
Abdelhamid El-Shaer ◽  
Alexander Wagner ◽  
Azat Sharafeev ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Plastic Substrate ◽  
Flexible Solar Cell ◽  
Cu2o Thin Film ◽  
Fabrication And Characterization

Enhancement of absorption in thin-film amorphous silicon solar cell with guided mode resonance

2012 ◽  
Vol 51 (11) ◽  
pp. 118001 ◽  
Author(s):  
Jun Wu ◽  
Changhe Zhou ◽  
Hongchao Cao ◽  
Anduo Hu ◽  
Wei Jia ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Silicon Solar Cell ◽  
Amorphous Silicon Solar Cell ◽  
Guided Mode ◽  
Guided Mode Resonance

scholarly journals A New Fractal-Based Miniaturized Dual Band Patch Antenna for RF Energy Harvesting

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Sika Shrestha ◽  
Seong Ro Lee ◽  
Dong-You Choi
Keyword(s):  
System Integration ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Microstrip Antennas ◽  
System Capacity ◽  
Dual Band ◽  
Dual Frequency ◽  
Performance Measurements ◽  
Dual Band Antenna ◽  
Rf Energy

The growth of wireless communications in recent years has made it necessary to develop compact, lightweight multiband antennas. Compact antennas can achieve the same performance as large antennas do with low price and with greater system integration. Dual-frequency microstrip antennas for transmission and reception represent promising approach for doubling the system capacity. In this work, a miniaturized dual band antenna operable at 2.45 and 5.8 GHz is constructed by modifying the standard microstrip patch antenna geometry into a fractal structure. In addition to miniaturization and dual band nature, the proposed antenna also removes unwanted harmonics without the use of additional filter component. Using a finite-element-method-based high frequency structure simulator (HFSS), the antenna is designed and its performance in terms of return loss, impedance matching, radiation pattern, and voltage standing wave ratio (VSWR) is demonstrated. Simulation results are shown to be in close agreement with performance measurements from an actual antenna fabricated on an FR4 substrate. The proposed antenna can be integrated with a rectifier circuit to develop a compact rectenna that can harvest RF energy in both of these frequency bands at a reduction in size of 25.98% relative to a conventional rectangular patch antenna.

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