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Polarization controllable and wide-angle frequency tunable metamaterial absorber
- Source :
- Journal of Applied Physics. 124:204901
- Publication Year :
- 2018
- Publisher :
- AIP Publishing, 2018.
-
Abstract
- In this paper, the design, fabrication, and measurement of a high-performance metamaterial absorber (MMA) have been presented. The three major concerns of MMA's are narrow bandwidth, angle sensitivity, and uncontrollable polarization. By smartly controlling the proposed design, the solutions to these three concerns of MMA are given in this paper. By integrating the design with varactor diodes, we make the MMA tunable to wide frequency ranges. Frequency tunability ranges from 4.2 to 7 GHz. By using circular sectors in the resonator, wide incident angle insensitivity has been achieved. The presented MMA exhibits more than 80% absorptivity up to 70° incident angles. With the proposed design, it is possible to control either TM or TE polarization resonant frequency by fixing the resonant frequency of other polarization. Also, a biasing technique which is simple and effective to control both TM and TE resonant frequencies simultaneously is given in this paper. Moreover, all these advantages have been achieved by using a single layer low cost FR4 material having thickness 0.6 mm as a substrate. By using a standard parameter retrieval technique, the real and imaginary parts of both permittivity and permeability of the presented MMA are calculated. It is expected that the presented work improves the state-of-the-art in the smart metamaterial absorber domain.
- Subjects :
- Permittivity
Materials science
business.industry
General Physics and Astronomy
020206 networking & telecommunications
Biasing
02 engineering and technology
Molar absorptivity
021001 nanoscience & nanotechnology
Polarization (waves)
Resonator
0202 electrical engineering, electronic engineering, information engineering
Metamaterial absorber
Optoelectronics
0210 nano-technology
business
Varicap
Diode
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 124
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........5593635f26e6035ea60e0a22ef0b6068