scholarly journals Dual-Band Resonator Designs for Near-Field Wireless Energy Transfer Applications

2020 ◽  
Author(s):  
Lai Ly Pon ◽  
Mohamed Himdi ◽  
Sharul Kamal Abdul Rahim ◽  
Chee Yen Leow
Keyword(s):  
Energy Transfer ◽  
Near Field ◽  
Dual Band ◽  
Wireless Energy Transfer

scholarly journals Printed Spiral Resonator for Displacement-Tolerant Near-Field Wireless Energy Transfer

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 172055-172064 ◽  
Author(s):  
Lai Ly Pon ◽  
Chee Yen Leow ◽  
Sharul Kamal Abdul Rahim ◽  
Akaa Agbaeze Eteng ◽  
Muhammad Ramlee Kamarudin
Keyword(s):  
Energy Transfer ◽  
Near Field ◽  
Wireless Energy Transfer

Feasibility Evaluation of Flexible Antenna Substrates for Near-Field Wireless Energy Transfer

2017 ◽  
Vol 23 (11) ◽  
pp. 11517-11520
Author(s):  
Mohamad Harris Misran ◽  
Sharul Kamal Abdul Rahim ◽  
Akaa Agbaeze Eteng ◽  
Maizatul Alice Meor Said
Keyword(s):  
Energy Transfer ◽  
Near Field ◽  
Wireless Energy Transfer ◽  
Feasibility Evaluation ◽  
Flexible Antenna

Low-power near-field magnetic wireless energy transfer links: A review of architectures and design approaches

2017 ◽  
Vol 77 ◽  
pp. 486-505 ◽  
Author(s):  
Akaa Agbaeze Eteng ◽  
Sharul Kamal Abdul Rahim ◽  
Chee Yen Leow ◽  
Suhanya Jayaprakasam ◽  
Beng Wah Chew
Keyword(s):  
Energy Transfer ◽  
Low Power ◽  
Near Field ◽  
Wireless Energy Transfer

scholarly journals Non-radiative wireless energy transfer with single layer dual-band printed spiral resonator

2019 ◽  
Vol 8 (3) ◽  
pp. 744-752
Author(s):  
Lai Ly Pon ◽  
Sharul Kamal Abdul Rahim ◽  
Chee Yen Leow ◽  
Tien Han Chua
Keyword(s):  
Energy Transfer ◽  
Data Transfer ◽  
Design Method ◽  
Single Layer ◽  
Transfer Efficiency ◽  
Dual Band ◽  
Axial Distance ◽  
Wireless Energy Transfer ◽  
Power Transfer Efficiency ◽  
Operating Distance

Accomplishing equilibrium in terms of transfer efficiency for dual-band wireless energy transfer (WET) system remains as one of key concerns particularly in the implementation of a single transmitter device which supports simultaneous energy and data transfer functionality. Three stages of design method are discussed in addressing the aforementioned concern. A single layer dual-band printed spiral resonator for non-radiative wireless energy transfer operating at 6.78 MHz and 13.56 MHz is presented. By employing multi-coil approach, measured power transfer efficiency for a symmetrical link separated at axial distance of 30 mm are 72.34% and 74.02% at the respective frequency bands. When operating distance is varied between 30 mm to 38 mm, consistency of simulated peak transfer efficiency above 50% is achievable.

Optimum Transmitter Receiver Ratio for Maximum Wireless Energy Transfer

2017 ◽  
Vol 5 (3) ◽  
pp. 599
Author(s):  
Mohamad Harris Misran ◽  
Sharul Kamal Abdul Rahim
Keyword(s):  
Energy Transfer ◽  
Mobile Device ◽  
Near Field ◽  
Near Field Communication ◽  
Wireless Energy Transfer ◽  
High Demand ◽  
Initial Size ◽  
Antenna Size ◽  
Decimal Number ◽  
Operating Distance

<p>Due to high demand of using cordless mobile device, the interest in wireless energy transfer (WET) has been growth intensively. This paper presented a method to obtained optimum transmitter receiver ratio for maximum performance of WET system using different initial antenna size at various distance. An optimized algorithm has been developed to determine the optimum ratios that yield the highest wireless transfer efficiency (WTE) at near field communication (NFC) frequency, 13.56MHz. 30mm x 30mm single square loop antenna is used as initial size of both transmitter and receiver using FR4 with operating distance = 50mm. Operating distance and initial size of the antenna will be varied and the effect to the WTE will be studied using Matlab, verified using Microsoft Studio CST. At distance = 50mm and initial size of the antenna = 30mm x 30mm, optimum transmitter to receiver ratio equal to 1:3 is obtained. The pattern of optimum transmitter receiver ratio between Matlab and CST has met an agreement. This research limited to integer transmitter receiver ratio used only and no decimal number being involved in magnify the transmitter size.</p>

scholarly journals A systematic optimization procedure of antenna miniaturization for efficient wireless energy transfer

2019 ◽  
Vol 9 (4) ◽  
pp. 3159
Author(s):  
Mohamad Harris Misran ◽  
Sharul Kamal Abdul Rahim ◽  
Maizatul Alice Meor Said ◽  
Mohd Azlishah Othman
Keyword(s):  
Energy Transfer ◽  
Low Cost ◽  
Near Field ◽  
Optimization Procedure ◽  
Transfer Efficiency ◽  
Wireless Energy Transfer ◽  
Antenna Size ◽  
Systematic Optimization ◽  
Operating Distance ◽  
Miniature Antenna

This paper presents a systematic optimization procedure to determine the reduced antenna size aimed at obtaining the best efficiency or at least equal performance with the initial large antenna design in a wireless energy transfer (WET) system. A low-cost, square-shaped planar loop antenna designed on each side of FR4 substrate is used as both the miniature transmitter and receiver antennas operating at 13.56 MHz for the near-field communication (NFC) band. The effect of distance and antenna size on the link parameters such as inductance, resistance and mutual coupling is studied, prior to the study of their effects on WTE. The accuracy of the procedure is cross-validated using two methods; analytically and using full wave simulations. The simulation then is verified using lab measurement setup at real scene environment. Trends of the resulting curves using both methods indicated good agreements, and optimal miniature antenna for the best wireless transfer efficiency (WTE) is able to be quickly determined. A miniature antenna is able to achieve 4% wireless transfer efficiency improvement with 47% antenna size reduction. Such method can be applied to efficiently estimate a low-cost WTE system setup, besides enabling the integration of self-tuning or reconfigurability features in such systems for a known initial antenna size to mitigate changes to its operating distance.

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