Title :
Tunable Zeroth-Order Resonance in Metamaterial-Inspired Transmission Lines Based on Electrowetting on Dielectric
Author :
Damgaci, Y. ; Cetiner, B.A.
Author_Institution :
Electr. & Comput. Eng. Dept., Utah State Univ., Logan, UT, USA
Abstract :
A new approach for tuning the resonant frequency of metamaterial-inspired transmission lines (TLs) by using electrowetting on dielectric (EWOD) is presented. Coplanar Waveguide (CPW) metamaterial-inspired TLs were designed and used as digital microfluidic platforms, where tunable resonance frequency was demonstrated for RF/microwave applications. A repeatable tuning mechanism was realized by exploiting the interface deformation of a liquid metal (mercury) droplet by an applied voltage. The maximum tuning range achieved is around 400 MHz (from 3.51 GHz to 3.92 GHz) with a dc actuation voltage of 110 V.
Keywords :
coplanar waveguides; dielectric materials; liquid metals; microfluidics; microwave metamaterials; transmission lines; EWOD; RF/microwave applications; applied voltage; coplanar waveguide; digital microfluidic platforms; electrowetting on dielectric; frequency 3.51 GHz to 3.92 GHz; interface deformation; liquid metal; mercury droplet; metamaterial-inspired transmission lines; repeatable tuning mechanism; resonant frequency; tunable resonance frequency; tunable zeroth-order resonance; voltage 110 V; Coplanar waveguides; Dielectrics; Frequency measurement; Metals; Resonant frequency; Tuning; Voltage measurement; Digital microfluidics; electrowetting on dielectric (EWOD); liquid metal; metamaterial; zeroth-order-resonator;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2271297
