Intrinsic cross-polarization ratio (IXR) for antenna arrays and improving polarimetry via polarization diversity
Paper in proceedings, 2015

I extend the concept of the intrinsic cross-polarization ratio (IXR) to an array of an arbitrary number of antenna elements. IXR is a figure-of-merit for the polarimetric performance of dual-polarized antenna elements, but it is easily generalized to more than two antennas by considering the effective dual-polarized response of polarimetrically beam-formed array. I also show that for a sparse array (i.e. arrays in which mutual-coupling can be ignored) of identical dual-polarized elements all with the same alignment, it is not possible to make the array IXR better than the IXR of dual-polarized element through beam-forming. However, such arrays can be improved by physically rotating the dual-polarized elements such that their alignments are not all the same. An array in which not all the dual-polarized elements do not all have the same alignment is a form of polarization diversity. I argue that polarization diversity is way to improve the polarimetric performance of arrays.

Antenna measurements

Noise

Polarimetry

Antenna accessories

Antenna arrays

Array signal processing

Author

Tobia Carozzi

Chalmers, Earth and Space Sciences, Onsala Space Observatory

Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015

630-633

Subject Categories

Astronomy, Astrophysics and Cosmology

DOI

10.1109/ICEAA.2015.7297193

More information

Latest update

1/31/2020