11 July 2002 Rectenna performances for smart membrane actuators
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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.
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Sang H. Choi, Sang H. Choi, Kyo D. Song, Kyo D. Song, Glen C. King, Glen C. King, Charles Woodall, Charles Woodall, } "Rectenna performances for smart membrane actuators", Proc. SPIE 4700, Smart Structures and Materials 2002: Smart Electronics, MEMS, and Nanotechnology, (11 July 2002); doi: 10.1117/12.475033; https://doi.org/10.1117/12.475033

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