xxgcatz
Joined: 19 Feb 2004
Posts: 53
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 05 Apr 2004 7:55 co-polarization |
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| When i read papers about the antennas , I often see that the co-polarization and cross-polariazation in the same one radiation pattern plotting . SO I can't know it ! Generally ,we plot E-plane radiation pattern with "theta " changing and H-plane radiation pattern with "phi" changing ,but what does the co-po and cross-po mean in one plotting?who can tell me ? Thanks a lot
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unkarc
Joined: 28 Apr 2001
Posts: 287
Helped: 36
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05 Apr 2004 9:13 co polarization |
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Hi,
You can find info on your question at URLs like
http://www.ethertronics.com/assets_f/Antenna%20Terms%20and%20Definitions%20Rev%20A%200120031.pdf on Page 4:
""Co-polarization: Co-polarization is the polarization in which the antenna is intended to radiate.
Cross-polarization: Cross-polarization discrimination is the measure of discrimination to oppositely polarized electromagnetic waves (e.g. the discrimination that a vertically polarized antenna has to horizontally polarized radio waves or the polarization orthogonal to a specified reference polarization). When plotted along with the principal plane pattern of the antenna on a relative dB scale, cross-polarization discrimination is simply the difference between the co-polarized level and the cross-polarized level in any given direction.""
See also
http://www.utexas.edu/research/mopro/papercopy/chapter06.pdf
http://cellphones-accessories.com/pcsantenna.html
rgds, unkarc
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