Monochromatic Tuning of Absorption Strength Based on Angle-Dependent Closed-Ring Resonator-Type Metamaterial Absorber

Al-Badri K. S. L., Cinar A., Kose U., Ertan O., EKMEKÇİ E.

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, vol.16, pp.1060-1063, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 16
  • Publication Date: 2017
  • Doi Number: 10.1109/lawp.2016.2620599
  • Journal Name: IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1060-1063
  • Keywords: Amplitude modulation, metamaterial-based absorber, monochromatic tuning of absorption strength, sensing, TERAHERTZ REGIME, SENSOR
  • Süleyman Demirel University Affiliated: Yes

Abstract

In this study, almost monochromatic tuning of absorption strength, i.e., tuning the absorption peak level at almost the same frequency, is presented by using an angle-dependent closed-ring resonator (AD-CRR)-type narrowband absorber structure in S-band. With this aim, first an ordinary planar closed-ring resonator (CRR) structure having a ground plane is designed, and then the structure is folded inward by a rotation angle a from a = 0. (i.e., a planar CRR) to a = 60. along the center line, which is parallel to the incident electric field. Both simulation and experimental results agree with the fact that the rotation angle a provides the freedom of tuning the absorption strength of the absorber structure almost monochromatically.