Reconfigurable subwavelength waveguide based on magnetic metamaterial |
| |
Authors: | Fan-Yi Meng Kuang Zhang Fang Zhang Qun Wu Jong-Chul Lee |
| |
Institution: | (1) School of Applied Sciences, Harbin University of Science and Technology, Harbin, China;(2) National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Institute of Microelectronics, Peking University, Beijing, China |
| |
Abstract: | The design and characterization is described of a reconfigurable subwavelength waveguide based on magnetic metamaterial. The
waveguide is capable of reconfiguring its propagating mode from right-handed to left-handed, which can be applied in the design
of novel microwave and RF devices such as leaky wave antennas with broadened scanning range. The waveguide consists of a rectangular
metallic waveguide loaded by two pieces of different magnetic metamaterials, which are structured by the same cells—modified
split ring resonators (MSRRs)—with different arrangements. Positions of the two pieces of metamaterials in the waveguide can
be reconfigured separately by the control mechanism. The simulated transmission data show that the waveguide has a passband
below the cutoff frequency of the hollow waveguide either in the left-handed case or in the right-handed case. The extracted
constitutive parameters have demonstrated that the effective permittivity and permeability of the waveguide are simultaneously
negative in the left-handed case and positive in the right-handed case. The magnetic field and surface current distributions
in the waveguide confirm that the waveguide operates as can be expected. The influence of the control mechanism on the performance
of the waveguide is studied. It is shown that the influence is so minor that it can be neglected. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|