Tunable Single-negative Metamaterials Based on Microstrip Transmission Line with Varactor Diodes Loading
نویسندگان
چکیده
In this paper, tunable single-negative (TSNG) metamaterials based on microstrip with varactor diodes loading are investigated. By tuning the external voltage, our structure can provide either an epsilon-negative or a mu-negative band gap, with varying gap width (the ratio of bandwidth to center frequency can be from 0 to over 100%) and depth (from 0 dB to about −30 dB). Moreover, the tunneling mode in a heterostructure constructed by epsilon-negative and TSNG metamaterials is also studied. The results show that its transmission, Q-factor, and electromagnetic localization can also be controlled conveniently. All these properties make our structure promising to be utilized as a practical switching device, or a suitable platform for the study of nonlinear effect in metamaterials.
منابع مشابه
King Saud University
Small size antennas usually suffer from bandwidth limitations. Bandwidth can be increased by adding lossy elements but, they significantly affect the efficiency of the antenna. One method to solve the efficiency problem without increasing the antenna size is to use the tunable antenna concept. Recently, tunable antennas attract much attention in mobile communications. The objective of this proj...
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