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

作者：Lei Bao Jun^*; Zamora Alexis; Chun Tyler F; Ohta Aaron T; Shiroma Wayne A

来源：IEEE Microwave and Wireless Components Letters, 2011, 21(9): 465-467.

DOI：10.1109/LMWC.2011.2162942

• Frequency-selective surfaces (FSSs)
• microwave filters
• periodic structures
• spatial filters

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.

• 出版日期2011-9