Volume 112, Number 5, December 2015
|Number of page(s)||5|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||22 December 2015|
Tunable microwave metamaterial absorbers using varactor-loaded split loops
1 Institute of Electromagnetics and Acoustics and Department of Electronic Science, Xiamen University Xiamen 361005, China
2 Department of Electrical and Computer Engineering, Duke University - Durham, NC 27708, USA
3 Aegis Technology Inc. - 12630 G Westminster Ave., Santa Ana, CA 92706, USA
Received: 6 October 2015
Accepted: 1 December 2015
Currently, implementation of active circuit elements within metamaterials is an effective way to make them electrically tunable. We combine varactors with split copper loops in a metamaterial absorber in order to obtain an electrically tunable microwave response. This absorber has a compact planar structure and a simplified back feeding network. Flexible frequency tunability of the microwave reflection in the range of 5–6 GHz is experimentally achieved. The design, simulation, and experimental results are systematically presented. The proposed method is scalable for developing active metamaterial absorbers based on metal loops, and shows a promising potential of active metamaterial absorbers for extensive microwave applications.
PACS: 41.20.-q – Applied classical electromagnetism / 84.40.-x – Radiowave and microwave (including millimeter wave) technology / 84.40.Dc – Microwave circuits
© EPLA, 2015
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.