Publisher : Korean Institute of Navigation and Port Research
DOI : 10.5394/KINPR.2010.34.4.299
Title & Authors
A Study on FDTD Analysis and Fabrication of the Sheet-type Millimeter EM wave Absorber Kim, Dae-Hun; Soo, Dong-Soo; Kim, Dong-Il;
In this paper, the EM wave absorber was developed for the 94-GHz detecting radar system. To analysis an EM wave absorber in millimeter wave band, we fabricated three absorber samples using carbon black and titanium dioxide and permalloy with chlorinated polyethylene. After measuring the complex relative permittivity, the absorption characteristics are simulated by 1D FDTD according to different thicknesses of less than 1.0 mm. Then, the EM wave absorber was fabricated based on the FDTD simulation. As a result, the measured results agreed well with the simulated ones, and the developed EM wave absorber with a thickness of 0.7 mm had the desired absorption characteristics of more than 14 dB in the frequency range of the 94-GHz band.
Absorption Characteristics;Millimeter wave EM absorber;FDTD simulation;Carbon black;titanium dioxide;permalloy;
Brooker, G. M., Birch, D. and Solms, J. (2005),“W-Band Airborne Interrupted Frequency Modulated CW Imaging Radar,” IEEE Trans. on Aerospace and Electronic System, Vol.41, No.3, pp. 955-971.
Choi, C. M, et al.(2006), “Development of the Electromagnetic Wave Absorber for 94 GHz Radar Sensors Using Permalloy," Inter. J. KIMICS, Vol.4, No.3, pp.114-117.
Hashmoto, O.(1997), Introduction to Wave Absorber,Morikita Shuppan.
Hashmoto, O. and Shimizu, Y.(1987), IEEE Trans. EMC 29, 142.
KARL S. KUNZ RAYMOND J.LUEBBERS(1993),Finite Difference Time Domain Method for Electromagnetics, CRC Press.
Naito, Y.(1987), Electromagnetic Wave Absorbers, New Ohm.
Russell, M. E., Crain, A., Curran, A., Campbell, R. A.,Drubin, C. A. and Miccioli, W. F., “Millimeter-Wave Radar Sensor for Automotive Intelligent Cruise Control(ICC),” IEEE Trans. on Microwave Theory and Tech., Vol.45, No.12, pp. 2444-2453.
Soh, T. and Hashimoto, O.(2000), “A Fundamental Study on Millimeter-Wave Absorbers Composed of Epoxy-Modified Urethane Rubber Mixed with Carbon Particles for 76 GHz or 94 GHz Frequency Band,” Trans. IEICE, Vol.J83-B, No.6, pp. 923-925.
Soh, T. and Hashmoto, O.(2001), “A Study on Millimeter-Wave Absorber Coating for V Band and W Band,” Trans. IEICE, Vol.J84-B, No.8, pp. 1523-15281.
Sullivan, D. M.(2000), Electromagnetic Simulation Using the FDTD method, IEEE Press series on RF and Microwave Technology.