Metamaterial-inspired absorbers for Terahertz packaging applications

In this paper, thin metamaterial-inspired structures are investigated for wide-band absorption of stray signals for THz packages. The absorber itself consists of a low-index, low-loss dielectric sandwiched between a patterned, two-dimensionally periodic, thin metallic layer, and a metal backing. Num...

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Bibliographic Details
Main Authors: Kyoung Youl Park, Hejase, J. A., Meierbachtol, C. S., Wiwatcharagoses, N., Chahal, P.
Format: Conference Proceeding
Language:English
Subjects:
Absorption
Dielectrics
Electromagnetic waveguides
Metals
Metamaterials
Reflection
Time domain analysis
Online Access:Request full text
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Summary:In this paper, thin metamaterial-inspired structures are investigated for wide-band absorption of stray signals for THz packages. The absorber itself consists of a low-index, low-loss dielectric sandwiched between a patterned, two-dimensionally periodic, thin metallic layer, and a metal backing. Numerical simulations were performed using both the finite element (FEM) and finite-difference time domain (FDTD) numerical methods. Design, fabrication and tests were carried out for absorbers having center frequencies of 0.2 THz and 0.4 THz. Ultra-wide bandwidth and strong absorption were obtained by taking advantage of skin-effect losses in metamaterial structures, and through multi-stacking of these structures. Absorbers having high absorption coefficients and bandwidth (>; 1THz) can easily be fabricated using the approach demonstrated in this paper. Two measurement approaches are applied to characterize these structures, details of which are presented in this paper.
ISSN:0569-5503
2377-5726
DOI:10.1109/ECTC.2011.5898809