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Proceedings Paper

Rectenna performances for smart membrane actuators
Author(s): Sang H. Choi; Kyo D. Song; Glen C. King; Charles Woodall
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Paper Abstract

The patch rectenna array was initially designed for high voltage output in shape control applications. The test results show that more than 200 volts of output was obtained from a 6 X 6 array at a far-field exposure (1.8 meters away) with an x-band input power of 18 watts. The 6 X 6 array patch rectenna was designed to generate theoretical voltages of up to 540 volts, but normal output was range 200 and 300 volts. Test were also performed with a THUNDER actuator attached to the 6 x 6 array. Flexible dipole rectenna arrays built on thin-film based flexible membranes are envisioned as the best option for NASA applications, such as microwave-driven shape controls for aircraft morphing and large ultra lightweight space structures. An array of dipole rectennas was designed for a high voltage output by densely populating it with Schottky barrier diodes to drive piezoelectric or electrostrictive actuators. The dipole rectenna array will eventually be integrated with a PAD logic circuit for power allocation and distribution and microbatteries for storage of excess power. The development of rectenna array-based wireless power drivers for shape control requires the development of new membrane materials with dielectric constants that are suitable for dipole rectenna arrays.

Paper Details

Date Published: 11 July 2002
PDF: 9 pages
Proc. SPIE 4700, Smart Structures and Materials 2002: Smart Electronics, MEMS, and Nanotechnology, (11 July 2002); doi: 10.1117/12.475033
Show Author Affiliations
Sang H. Choi, NASA Langley Research Ctr. (United States)
Kyo D. Song, Norfolk State Univ. (United States)
Glen C. King, NASA Langley Research Ctr. (United States)
Charles Woodall, Norfolk State Univ. (United States)

Published in SPIE Proceedings Vol. 4700:
Smart Structures and Materials 2002: Smart Electronics, MEMS, and Nanotechnology
Vijay K. Varadan, Editor(s)

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