Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Conductivity Evaluation of a Newly Proposed Material for a SAR Reflector Antenna

  • Yoon, Seong Sik (Department of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Jae Wook (Department of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Lee, Taek Kyung (Department of Electronics, Telecommunication and Computer Engineering, Korea Aerospace University) ;
  • Roh, Jin Ho (Department of Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Hark Inn (Department of Mechanical Engineering, Korea Aerospace University) ;
  • Yi, Dong Woo (Agency for Defense Development)
  • Received : 2014.06.13
  • Accepted : 2014.09.11
  • Published : 2014.09.30
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Abstract

Large spaceborne antennas should be lightweight, a factor related to the development costs of launch vehicles. In order to overcome this drawback, a feasibility study of a new carbon fiber reinforced polymer (CFRP) named M55J/RS3 is carried out for a synthetic aperture radar (SAR) reflector antenna. In particular, the high resolution of detected images is taken into consideration. To validate the electrical performance, a test of the CFRP specimen is fabricated, and the transmission/reflection coefficients are measured using a standard X-band waveguide. Finally, the effective complex permittivity and effective electrical conductivity are derived from the obtained measured data. By applying the derived conductivity to the simulation of the radiation pattern, antenna gain, and beamwidth-instead of relying on the assumption of a perfect electric conductor-variations in electrical performance are also investigated and discussed.

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References

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  1. Insensitivity Characteristics in the Dual Polarization of Deployable CFRP Reflector Antennas for SAR vol.66, pp.1, 2018, https://doi.org/10.1109/TAP.2017.2772315