Multiscale Analysis of Panel Gaps in a Large Parabolic Reflector
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Multiscale Analysis of Panel Gaps in a Large Parabolic ReflectorAbstract
The effect of the gaps between the panels of a reflector, used as a radio-telescope, is analyzed in this paper via the multiscale and array factor approach. Initially, the simulation is carried out by numerical integration as well as the Finite Difference Time Domain (FDTD) Method for a reflector with a moderately large diameter, and the results are then scaled for the actual size, which is thousands of wavelengths in diameter in the frequency range of interest. The array factor concept is employed to demonstrate the fact that the grating lobe cannot arise for the typical gap size of the reflector.
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References
K. S. Yee, “Numerical solution of initial
boundary value problems involving Maxwell’s
equations in isotropic media,” IEEE Trans.
Antennas and Propagat., vol. AP-14, pp. 302-
, May 1966.
A. Taflove and S. C. Hagness, Computational
Electromangeics: The Finite-Difference TimeDomain Method, 2nd ed. Boston, MA: Artech,
pp. 224-227, 2000.
“Antenna Theory, Analysis and Design”, C. A.
Balanis, Second Edition, John Wiley & Sons,
Inc. pp. 582–583, 1982.
