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- Title
Conductivity Evaluation of a Newly Proposed Material for a SAR Reflector Antenna.
- Authors
Seong Sik Yoon; Jae Wook Lee; Taek Kyung Lee; Jin Ho Roh; Hark Inn Kim; Dong Woo Yi
- 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.
- Subjects
REFLECTOR antennas; ELECTRICAL conductivity measurement; SPACE vehicle radio antennas; SYNTHETIC aperture radar; ANTENNA radiation patterns; ELECTRICAL conductors
- Publication
Journal of Electromagnetic Engineering & Science, 2014, Vol 14, Issue 3, p293
- ISSN
2671-7255
- Publication type
Article
- DOI
10.5515/JKIEES.2014.14.3.293