Open AccessBroadband and Tunable Active Microwave Absorbing Element
Author(s) -
Yaowen Xing,
Zheng Wang,
Haibo Zhao,
Xue Lei,
Qi Li,
Chengshan Xue,
Jia Zhang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/440/3/032133
Subject(s) - varicap , microwave , materials science , optoelectronics , metamaterial , diode , broadband , metamaterial absorber , dielectric , absorption (acoustics) , electrical element , electrical engineering , tunable metamaterials , optics , engineering , telecommunications , capacitance , electrode , physics , composite material , quantum mechanics
In this paper, a new type of electrically tuned microwave absorbing material working in microwave band is proposed. The metamaterial unit consists of is composed three layers of metal and two dielectric substrates spaced apart like a sandwich structure. The varactor diodes and lumped element are embedded as active circuit components in slots of the top metal patch. By adjusting the bias voltage of the varactor diodes, the absorption band can be adjusted, that is to say, the absorption frequency can be reconfigured. The active absorbing material has great application potential and lays a foundation for the next generation of intelligent absorbing materials.