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What are the E-plane and H-plane in antenna radiation, and why are they important?

I am analyzing radiation patterns of various antennas and see references to E-plane and H-plane cuts.
I want to understand what these planes represent physically, how they relate to polarization, and why they are commonly used in measurement and simulation.

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By Fanita Answered 1 year ago

From my experience, the E-plane is defined as the plane containing the electric field vector and the direction of maximum radiation, while the H-plane contains the magnetic field vector and the same maximum radiation direction. I have seen these planes used in both measurement and simulation because they provide standard cross-sectional views of the radiation pattern. I would recommend analyzing both planes, as the E-plane often shows main lobe behavior and beamwidth, whereas the H-plane illustrates symmetry and side-lobe levels. In practice, understanding these planes is essential for antenna characterization, polarization verification, and pattern comparison.

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