Fig. 2

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Beam patterns for I, Q, and U at three frequencies constructed from calibrated scans. The Q and U patterns represent leakage from I. All the patterns are normalized to the total intensity peaks. The contour levels for I start at −3 dB and stop at −15 dB with an interval of 3 dB. For Q and U, the contour levels start at −0.015 and stop at 0.015, with an interval of 0.005.
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