Title :
A Frequency Reconfigurable Dielectric Resonator Antenna Using Colloidal Dispersions
Author :
Huff, Gregory H. ; Rolando, David L. ; Walters, Phillip ; McDonald, Jacob
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
7/2/1905 12:00:00 AM
Abstract :
The vertical displacement of a columnar fluidic colloidal dispersion is examined as a frequency reconfigurable dielectric resonator antenna (DRA). The coaxial probe-fed structure has tunable impedance properties that are reversibly controlled by adjusting the columnar height of the dispersion. Colloidal barium strontium titanate was dispersed in hydrotreated naphthenic oil and placed at several heights into a section of polycarbonate tubing over an aluminum ground plane to demonstrate the impedance properties of this structure. Measured, simulated, and calculated results for a range of heights that corresponded to single-mode operation are provided for a design operating between 2.5 and 4.5 GHz.
Keywords :
adaptive antenna arrays; barium compounds; dielectric resonator antennas; disperse systems; microfluidics; DRA; aluminum ground plane; coaxial probe-fed structure; colloidal barium strontium titanate; colloidal dispersions; columnar fluidic colloidal dispersion; dispersion columnar height; frequency reconfigurable dielectric resonator antenna; hydrotreated naphthenic oil; polycarbonate tubing; tunable impedance property; vertical displacement; Adaptive antennas; colloidal dispersion; dielectric resonator antennas (DRAs); microfluidic; reconfigurable antennas;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2010.2046613
