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A Study on the fundamental Experiment of Wireless Power Transmission for 2.45㎓ Microwave to DC Conversion

Dong Yun, Yang Ha Park, Gwan Ho Kim, Yeong Cheol Lee

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Abstract

For a basic experiment on Wireless Power Transmission(WPT) of 2.45㎓ frequency band, we had developed and tested a retenna cell based on microstrip antennas to get a high microwave to DC conversion efficiency. Square type microstrip array retenna with 20×20 was constructed using the developed rectenna for basic experiment. We examined dependence of the rectenna array characteristics on the parallel and series electrical connection of the sub-arrays which is composed to have better Microwave-DC conversion to have better Microwave-DC conversion efficiency in the central area of the rectenna array. A 75.6% conversion efficiency from unit rectenna cell with 400Ω load and a 33% wireless power transmission efficiency from transmitted antenna to load with 20×20 rectenna array system was achieved.

About this research paper

What this paper is about

For a basic experiment on Wireless Power Transmission(WPT) of 2.45㎓ frequency band, we had developed and tested a retenna cell based on microstrip antennas to get a high microwave to DC conversion efficiency. Square type microstrip array retenna with 20×20 was constructed using the developed rectenna for basic experiment. We examined dependence of the rectenna array characteristics on the parallel and series electrical connection of the sub-arrays which is composed to have better Microwave-DC conversion to have better Microwave-DC conversion efficiency in the central area of the rectenna array. A 75.6% conversion efficiency from unit rectenna cell with 400Ω load and a 33% wireless power transmission efficiency from transmitted antenna to load with 20×20 rectenna array system was achieved.

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Available abstract

For a basic experiment on Wireless Power Transmission(WPT) of 2.45㎓ frequency band, we had developed and tested a retenna cell based on microstrip antennas to get a high microwave to DC conversion efficiency. Square type microstrip array retenna with 20×20 was constructed using the developed rectenna for basic experiment. We examined dependence of the rectenna array characteristics on the parallel and series electrical connection of the sub-arrays which is composed to have better Microwave-DC conversion to have better Microwave-DC conversion efficiency in the central area of the rectenna array. A 75.6% conversion efficiency from unit rectenna cell with 400Ω load and a 33% wireless power transmission efficiency from transmitted antenna to load with 20×20 rectenna array system was achieved.

Key concepts: Rectenna, Microwave, Energy conversion efficiency, Microwave transmission, Microstrip, Electrical engineering, Power transmission, Microstrip antenna

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