A meta-substrate to enhance the bandwidth of metamaterials

Hongsheng Chen; Zuojia Wang; Runren Zhang; Huaping Wang; Shisheng Lin; Faxin Yu; Herbert O Moser

doi:10.1038/srep05264

A meta-substrate to enhance the bandwidth of metamaterials

Sci Rep. 2014 Jun 12:4:5264. doi: 10.1038/srep05264.

Authors

Hongsheng Chen¹, Zuojia Wang¹, Runren Zhang¹, Huaping Wang², Shisheng Lin¹, Faxin Yu², Herbert O Moser³

Affiliations

¹ 1] The Electromagnetics Academy at Zhejiang University, Zhejiang University, Hangzhou 310027, China [2] Deptment of Information and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
² School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China.
³ Network of Excellent Retired Scientists and Institute of Microstructure Technology, Karlsruhe Institute of Technology (KIT), Postfach 3640, D-76021 Karlsruhe, Germany.

Abstract

We propose the concept of a meta-substrate to broaden the bandwidth of left-handed metamaterials. The meta-substrate, which behaves like an inhomogeneous magnetic substrate, is composed of another kind of magnetic metamaterials like metallic closed rings. When conventional metamaterial rings are printed on this kind of meta-substrate in a proper way, the interaction of the metamaterials units can be greatly enhanced, yielding an increased bandwidth of negative permeability. An equivalent circuit analytical model is used to quantitatively characterize this phenomenon. Both numerical and experimental demonstrations are carried out, showing good agreement with theoretical predictions.

Publication types

Research Support, Non-U.S. Gov't