Abstract
In this paper, a new metamaterial (MTM) unit cell implemented in a microstrip transmission line configuration is proposed. Reconfigurable metamaterial-based Composite Right/Left Handed (CRLH) microstrip transmission line, with one-side etching and no via, is presented here for the first time. As a result, it is easier to fabricate and more convenient for integration. By incorporating varactor diodes, the electrical characteristics of the unit cell can be electronically reconfigured through DC voltage tuning. A microstrip line loaded with this new unit cell exhibits a tunable band pass characteristics with right- and left-handed phenomena. This was confirmed using a dispersion diagram. A simple tunable band-pass (7 - 8.25 GHz) filter using the new unit cell is demonstrated. A single unit cell circuit has been fabricated and preliminary measured results correlate closely with simulation results.
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