scholarly journals DIELECTRIC RESONATOR ANTENNA ARRAYS FOR MICROWAVE ENERGY HARVESTING AND FAR-FIELD WIRELESS POWER TRANSFER

2015 ◽  
Vol 59 ◽  
pp. 89-99 ◽  
Author(s):  
Ahmed Z. Ashoor ◽  
Omar M. Ramahi
Keyword(s):  
Energy Harvesting ◽  
Antenna Arrays ◽  
Dielectric Resonator ◽  
Wireless Power Transfer ◽  
Microwave Energy ◽  
Far Field ◽  
Power Transfer ◽  
Dielectric Resonator Antenna ◽  
Wireless Power

scholarly journals Coherently Driven and Superdirective Antennas

Electronics ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 845 ◽  
Author(s):  
Alex Krasnok
Keyword(s):  
Dielectric Resonator ◽  
Electromagnetic Waves ◽  
Wireless Power Transfer ◽  
Higher Order ◽  
Power Transfer ◽  
Wireless Power ◽  
Entire Spectrum ◽  
Guided Mode ◽  
Dielectric Antennas ◽  
Antenna Systems

Antennas are crucial elements for wireless technologies, communications and power transfer across the entire spectrum of electromagnetic waves, including radio, microwaves, THz and optics. In this paper, we review our recent achievements in two promising areas: coherently enhanced wireless power transfer (WPT) and superdirective dielectric antennas. We show that the concept of coherently enhanced WPT allows improvement of the antenna receiving efficiency by coherent excitation of the outcoupling waveguide with a backward propagating guided mode with a specific amplitude and phase. Antennas with the superdirectivity effect can increase the WPT system’s performance in another way, through tailoring of radiation diagram via engineering antenna multipoles excitation and interference of their radiation. We demonstrate a way to achieve the superdirectivity effect via higher-order multipoles excitation in a subwavelength high-index spherical dielectric resonator supporting electric and magnetic Mie multipoles. Thus, both types of antenna discussed here possess a coherent nature and can be used in modern intelligent antenna systems.

scholarly journals Wireless Power Transfer and Energy Harvesting: Current Status and Future Prospects

2019 ◽  
Vol 26 (4) ◽  
pp. 163-169 ◽  
Author(s):  
Jun Huang ◽  
Yide Zhou ◽  
Zhaolong Ning ◽  
Hamid Gharavi
Keyword(s):  
Energy Harvesting ◽  
Wireless Power Transfer ◽  
Current Status ◽  
Power Transfer ◽  
Wireless Power ◽  
Future Prospects
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