Analysis of Cross-Polarized Field by Panel Misalignment Errors in a Deployable Reflector Antenna

This paper analyzes the generation mechanism of a cross-polarized field resulting from panel misalignment errors in solid-surface deployable antenna. Misalignment antenna results path length error and rotation unit normal vector on reflector surface. However, terms analysis cross-polarization (cross-pol) generation, rotational is more significant factor. In aperture field, distributions cross-pol components are calculated to identify polarization characteristics radiated field. For uniform misalignment, peak-to-cross (XPOL) found be smaller than -50 dB for angles less 3°. Furthermore, when panels non-uniformly misaligned with sinusoidal distribution, level depends angular position maximum misalignment.