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A Wideband, Pressure-Driven, Liquid-Tunable Frequency Selective Surface

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5 Author(s)
Bao Jun Lei ; Department of Electrical Engineering, University of Hawaii at Manoa, Honolulu, HI, USA ; Alexis Zamora ; Tyler F. Chun ; Aaron T. Ohta
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A wideband, liquid-metal-based, tunable frequency selective surface is presented. The structure consists of a periodic array of liquid mercury (Hg) volumes separated by gaps of mineral oil, encapsulated by an array of parallel polytetrafluoroethylene tubes. Tunability is achieved via pressure-driven fluidic control over the respective volumes of Hg and oil. A tuning range of 4.08-16.96 GHz (122.4% fractional bandwidth) is demonstrated.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:21 ,  Issue: 9 )