Proceedings ArticleDOI
Optimization of the Efficiency and Other Properties of the Rectenna Element
William C. Brown
- pp 142-144
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TLDR
The rectenna which captures and rectifies the microwave power at the receiving end of a free space microwave power transmission system is comprised of many elements consisting of halfwave dipoles with microwave filter and rectification circuits attached.Abstract:
The rectenna which captures and rectifies the microwave power at the receiving end of a free space microwave power transmission system is comprised of many elements consisting of halfwave dipoles with microwave filter and rectification circuits attached. This element has been independently optimized for efficiency and analyzed for losses. The paper describes the device, the special test equipment used, the results of the mathematical modelling and computer simulation, special low loss Schottky barrier diodes that have been constructed to improve the efficiency, and life tests that have been made on these devices. An efficiency, defined as the ratio of DC power output to incident microwave power, of over 90% has been achieved.read more
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References
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Journal ArticleDOI
The technology and application of free-space power transmission by microwave beam
TL;DR: In this article, the point-to-point transfer of power by a microwave beam is examined in terms of the microwave beam itself, and the conversion technology between microwaves and dc power at either end of the system.
Journal ArticleDOI
Modeling and Computer Simulation of a Microwave-to-DC Energy Conversion Element
TL;DR: In this paper, a microwave-to-dc energv conversion element consisting of a dipole antenna, a low-pass filter, a Schottky-barrier diode, and a dc filter has been modeled using a distributed transmission-line modeling technique that includes skin-effect losses.
Journal ArticleDOI
Adapting Microwave Techniques to Help Solve Future Energy Problems
TL;DR: In this paper, the relationship between microwave techniques and the growing concern for future sources of energy is reviewed, specifically explored in the use of a microwave beam to efficiently transport power from an array of solar photovoltaic cells in space to the earth's surface.
Proceedings ArticleDOI
Recent Progress in Power Reception Efficiency in a Free-Space Microwave Power Transmission System
William C. Brown,C.K. Kim +1 more
TL;DR: In this article, GaAs Schottky-barrier diodes were combined with rectifier circuit technology to produce receiving elements complete with low pass filtering at the microwave input and filtering at output that operate in the 82-86 percent efficiency region.