Title :
Simulations of the ESA Planck HFI beams of polarized and multi-mode horns
Author :
Yurchenko, Vladimir B. ; Murphy, John A. ; Lamare, J.-M.
Author_Institution :
Dept. of Exp. Phys., Nat. Univ. of Ireland, Maynooth, Ireland
Abstract :
We report on rigorous physical optics simulations of the KSA Planck dual-reflector telescope being designed for measuring the temperature anisotropies and polarization characteristics of the cosmic microwave background. Both polarized mono-mode and non-polarized multi-mode beams covering the frequency range from 100 GHz to 857 GHz (D/λmin ∼ 5000) are computed by using a specially developed ultra-fast physical optics code propagating the source field mode-by-mode from the apertures of profiled corrugated horns simulated by the scattering matrix approach. Polarization characteristics of the broadband incoherent beams have been computed for the purpose of the analysis of systematic errors in polarization measurements.
Keywords :
S-matrix theory; electromagnetic wave polarisation; millimetre wave propagation; telescopes; 100 to 857 GHz; ESA Planck HFI beams; broadband incoherent beams; cosmic microwave background; dual-reflector telescope; multimode horns; polarization characteristics; polarization measurements; polarized horns; profiled corrugated horns; scattering matrix approach; systematic errors; temperature anisotropies; ultrafast physical optics code; Anisotropic magnetoresistance; Computational modeling; Frequency; Microwave measurements; Optical computing; Optical design; Optical polarization; Physical optics; Telescopes; Temperature measurement;
Conference_Titel :
Antenna Theory and Techniques, 2003. 4th International Conference on
Print_ISBN :
0-7803-7881-4
DOI :
10.1109/ICATT.2003.1239194
