A Frequency Reconfigurable Dielectric Resonator Antenna Using Colloidal Dispersions

作者：Huff Gregory H^*; Rolando David L; Walters Phillip; McDonald Jacob

来源：IEEE Antennas and Wireless Propagation Letters, 2010, 9: 288-290.

DOI：10.1109/LAWP.2010.2046613

• Adaptive antennas
• colloidal dispersion
• dielectric resonator antennas (DRAs)
• microfluidic
• reconfigurable antennas

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.

• 出版日期2010