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- For right-hand circular polarization (RHCP), if the wave is coming toward you (propagating along the z-axis), the electric field rotates clockwise. In this case, the horizontal dipole’s signal leads the vertical dipole’s signal by 90 degrees in time.

- For left-hand circular polarization (LHCP), the field rotates counterclockwise, and the vertical dipole’s signal leads the horizontal dipole’s signal by 90 degrees.