Axial cross polarization in reflector antennas with surface imperfections
Abstract
Expressions for the probability density function and mean of boresight cross polarization field intensity in terms of the rms surface error epsilon are derived. It is shown that for small errors the mean onaxis cross polarization field intensity is directly proportional to the rms surface error. For relatively large errors (epsilon greater than 0.04 lambda) forward cross polarization is proportional to the square root of /1exp (2sigmasquared)/ where sigma is the rms phase error. It is also shown that forward cross polarization is proportional to the correlation diameter and is a function of the polarization efficiency. Experimental measurements are revealed and results are compared with theoretical findings.
 Publication:

IEEE Transactions on Antennas and Propagation
 Pub Date:
 September 1980
 DOI:
 10.1109/TAP.1980.1142397
 Bibcode:
 1980ITAP...28..610G
 Keywords:

 Antenna Design;
 Cross Polarization;
 Directional Antennas;
 Reflector Antennas;
 Reflectors;
 Surface Defects;
 Boresights;
 Design Analysis;
 Phase Error;
 Probability Density Functions;
 RootMeanSquare Errors;
 Communications and Radar