Title :
A Wideband, Pressure-Driven, Liquid-Tunable Frequency Selective Surface
Author :
Lei, Bao Jun ; Zamora, Alexis ; Chun, Tyler F. ; Ohta, Aaron T. ; Shiroma, Wayne A.
Author_Institution :
Dept. of Electr. Eng., Univ. of Hawaii at Manoa, Honolulu, HI, USA
Abstract :
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.
Keywords :
frequency selective surfaces; mercury (metal); microwave circuits; frequency 4.08 GHz to 16.96 GHz; frequency selective surface; liquid mercury; mineral oil; periodic array; polytetrafluoroethylene tubes; pressure-driven fluidic control; Arrays; Bandwidth; Frequency selective surfaces; Magnetic liquids; Metals; Minerals; Tuning; Frequency-selective surfaces (FSSs); microwave filters; periodic structures; spatial filters;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2162942
