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Up to now there has been an intense research on metamaterials based on Composite Right/Left Handed (CRLH) approach and several applications based on this approach have been developed. Most of the published CRLH cells are composed of an interdigital-capacitor and a stub-inductor implemented on microstrip technology. In previous work, the design and simulation results of a modified CRLH unit cell endowed...
This paper reports the DC and Radio Frequency (RF) characterization of Ba0.6S0.4TiO3 thin films using three different components. For DC characterization, two single circle patch MIM capacitors of different radii are fabricated over Pt/Ti/SiO2/Si substrate covered with a 350 nm BST film. The measurement results show a tunability range of 61% for 0V to 20V biasing voltage. For higher frequency characterization,...
Modified CRLH structures implemented on CPW technology and silicon substrate are presented. The aim of this work is to extend the structures frequency agility by adding further tuning capabilities. The classical cell composed of two series interdigital capacitors (IDC) on both sides of a stub-inductor has been modified by adding a new stub capacitor that provides a new degree of freedom by controlling...
This paper addresses the characterization of Ba0.6Sr0.4TiO3 dielectric properties on different dielectric substrates using three different components. First, for low frequencies, metal-insulator-metal (MIM) capacitors are used to determine the BST dielectric constant, loss tangent and tunability for different biasing voltages from 0-30 V showing a tunability range of 66%. For microwave frequency ranges,...
A novel CRLH cell is hereby presented providing easy integration and reconfigurability. First, the straight access line to the interdigital-capacitor was replaced by a bent access to improve the propagation without using cumbersome tapered access. Second, a stub-capacitor was added to facilitate the reconfigurability providing added degree of freedom for the values of the circuit model. These modifications...
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