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How to judge the way of polarization（circular polarization or linear polarization）
Posted 2020年8月31日 GMT-4 05:08 RF & Microwave Engineering, Wave Optics 1 Reply
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Hello，everyone I want to know how to judge the way of polarization（circular polarization or linear polarization）according to the radation pattern of axial ratio in the polar plot group.
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In regard to definitions, see http://www.antenna-theory.com/definitions/axial.php or https://en.wikipedia.org/wiki/Elliptical_polarization . In regard to checking the handedness of circular polarization, or for a quick/qualitative view of the orientation and ellipticity of the polarization, I usually just plot an animation using Comsol's arrow-plot on a surface capability, and watch the E vector sweep around as the wave phase varies. You can do this with the fields in/on your model volume, or you can even do it for far-field plots on finite surfaces. For example, you can do an arrow plot of Efarx, Efary, and Efarz on a hemispherical surface around the origin.
-------------------Scientific Applications & Research Associates (SARA) Inc.
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