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

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5 Author(s)
Bao Jun Lei ; Dept. of Electr. Eng., Univ. of Hawaii at Manoa, Honolulu, HI, USA ; Zamora, A. ; Chun, T.F. ; Ohta, Aaron T.
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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:

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