Which pattern represents a plot with magnitude of field strength Vs θ at a constant φ?

Which pattern represents a plot with magnitude of field strength Vs θ at a constant φ? Correct Answer E-plane pattern

Varying θ at a constant φ represents a vertical plot against the field strength. So this pattern is called E-plane pattern. H-plane or horizontal pattern are plotted with magnitude of field strength Vs φ at a constant θ. Power pattern is plotted with square of the magnitude of field strength.

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