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A Coaxial Stub Microfluidic Impedance Transformer (COSMIX)

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2 Author(s)
Huff, G.H. ; Electromagn. & Microwave Lab., Texas A&M Univ., College Station, TX, USA ; Goldberger, S.

This letter proposes a coaxial stub microfluidic impedance transformer and discusses its design, theory, and operation. Electrostatically-stabilized colloidal dispersions using non-aqueous fluids facilitate its electromagnetic agility by altering their effective medium properties. Theoretical, simulated, and measured results at 400 MHz, 800 MHz, and 1.6 GHz using 0%, 25%, and 50% volume fractions of colloidal barium strontium titanate dispersed in a low-loss severely hydrotreated mineral oil are included to demonstrate the operation of the device. Simulated results for non-spherical nanoparticles are included to show the potential of different material systems.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:20 ,  Issue: 3 )