A hybrid differential/mode filtering technique for FDTD analysis of dual-polarization antenna feeds

M. Celuch-Marcysiak , Maciej Sypniewski , W.K. Gwarek

Abstract

A new technique for efficient analysis of dual-polarization antenna feeds has been developed. It combines conformal FDTD modelling of the structure, differential decomposition of total fields into incident and reflected, and filtering of the fields through numerical modal templates. The new technique has been validated for matched dual-polarization circular and ridged circular guides, even with coarse discretization producing accurate results. For the practical design of a septum polarizer, excellent agreement with the measurements has been obtained, and a critical parameter which is the 90 deg; phase shift between the polarizations has been simulated with 0.5 deg; accuracy
Author M. Celuch-Marcysiak
M. Celuch-Marcysiak,,
-
, Maciej Sypniewski RE
Maciej Sypniewski,,
- The Institute of Radioelectronics
, W.K. Gwarek
W.K. Gwarek,,
-
Pages570-573 vol.1
Book IEEE Antennas and Propagation Society International Symposium, 1998, vol. 1, 1998
Keywords in English90 deg, antenna feeds, circular waveguides, coarse discretization, conformal FDTD modelling, differential decomposition, dual-polarization antenna feeds, electromagnetic radiation, Electromagnetic scattering, electromagnetic wave polarisation, FDTD analysis, Filtering, filtering theory, finite difference methods, finite difference time-domain analysis, frequency, horn antennas, hybrid differential/mode filtering, incident field, matched dual-polarization circular guides, matched dual-polarization ridged circular guides, Measurements, numerical modal templates, phase shift, Polarization, reflected field, ridge waveguides, Scattering parameters, septum polarizer, simulation, Time domain analysis, total fields
DOIDOI:10.1109/APS.1998.699204
Score (nominal)1
Citation count*1 (2015-04-24)
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