A Microwave Power Transmission Experiment Based on the Near-Field Focused Transmitter
| Autor: | Xianjin Yi, Shuji Hao, Lin Zhou, Xing Chen, Xin Duan, Bing Zhang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Aperture business.industry Transmitter Planar array 020206 networking & telecommunications Near and far field 02 engineering and technology Microwave transmission Optics Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Coaxial Antenna (radio) business Computer Science::Information Theory |
| Zdroj: | IEEE Antennas and Wireless Propagation Letters. 18:1105-1108 |
| ISSN: | 1548-5757 1536-1225 |
| DOI: | 10.1109/lawp.2019.2910200 |
| Popis: | For most microwave power transmission (MPT) applications, the microwave power is received within the near field of a large-scale transmitting antenna from a limited distance. This letter explores the design of a near-field focused transmitting antenna to concentrate the microwave power on the receiving antenna's aperture, and thereby to enhance the transmission efficiency of the MPT. A near-field planar array with a size of 1 m × 1 m working at 5.8 GHz is manufactured. To focus the microwave power at a distance of 10 m, its 8 × 8 radiation elements are fed with an equal amplitude but different phase using coaxial cables of different lengths. An MPT experiment is conducted. The measurement shows that, compared with a traditional equal-phase array, the near-field focused array obtains a much more concentrated microwave beam. The transmission efficiency is significantly increased from 32.98% to 41.85%. |
| Databáze: | OpenAIRE |
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