Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 16, Issue -, Pages 2062-2065Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2017.2695617
Keywords
Absorber; liquid crystals (LCs); metamaterial; tunable
Funding
- National Natural Science Foundation of China [51607050]
- Fundamental Research Funds for the Central Universities [JZ2015HGBZ0109]
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A tunable metamaterial absorber based on the liquid crystal intended for F frequency band is presented. The proposed absorber was analyzed both numerically and experimentally. The conducted analysis has shown that the bias voltage affects the orientation of the nematic liquid crystal embedded in the mesh voids and causes the resonant frequency shift from 110.9 to 103.8 GHz with the frequency tunability of 6.4%. The absorptivity of the proposed absorber was measured, and it was higher than 90% for all bias voltages. Therefore, the proposed absorber provides a new opportunity in development of tunable sensors and absorbers.
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