scholarly journals Investigation on a 220 GHz Quasi-Optical Antenna for Wireless Power Transmission

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 634
Author(s):  
Meng Han ◽  
Xiaotong Guan ◽  
Moshe Einat ◽  
Wenjie Fu ◽  
Yang Yan
Keyword(s):  
Gaussian Beam ◽  
Millimeter Wave ◽  
Power Transmission ◽  
Divergence Angle ◽  
Wave Radiation ◽  
Optical Antenna ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Output Beam ◽  
Long Distance

This paper investigates a 220 GHz quasi-optical antenna for millimeter-wave wireless power transmission. The quasi-optical antenna consists of an offset dual reflector, and fed by a Gaussian beam that is based on the output characteristics of a high-power millimeter-wave radiation source-gyrotron. The design parameter is carried on by a numerical code based on geometric optics and vector diffraction theory. To realize long-distance wireless energy transmission, the divergence angle of the output beam must be reduced. Electromagnetic simulation results show that the divergence angle of the output beam of the 5.6 mm Gaussian feed source has been significantly reduced by the designed quasi-optical antenna. The far-field divergence angle of the quasi-optical antenna in the E plane and H plane is 1.0596° and 1.0639°, respectively. The Gaussian scalar purity in the farthest observation field (x = 1000 m) is 99.86%. Thus, the quasi-optical antenna can transmit a Gaussian beam over long-distance and could be used for millimeter-wave wireless power transmission.

scholarly journals Methods for testing the performance of long-distance wireless power transmission systems

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Xudong Wang ◽  
Changbo Lu ◽  
Changfu Wang ◽  
Panpan Liu ◽  
Wanli Xu ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Power Transmission ◽  
Evaluation Studies ◽  
Testing Device ◽  
Wireless Power ◽  
Wireless Power Transmission ◽  
Long Distance ◽  
Transmission Systems ◽  
Power Transmission Systems ◽  
Solid Foundation

AbstractLong-distance wireless power transmission can reduce the dependence of unmanned systems on energy storage systems, which is especially advantageous for unmanned aerial vehicles. This approach is key for building an integrated and uninterrupted air-to-ground power supply network. This paper introduces the technical characteristics of long-distance wireless power transmission systems, reports the development of such systems at home and abroad, and proposes technical indices and methods for performance evaluation of these systems. A test was conducted using a testing device, and the key parameters of the system performance were obtained. This work provides a solid foundation for the performance evaluation studies of long-distance wireless power transmission systems.

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