Fig. 2. (Color online) (a–b) Illustration of measurement configurations: (a) vertical configuration; (b) horizontal configuration. (c–h) Microwave near-field distribution of dielectric tubes measured in the vertical and horizontal configurations. (c–d) Microwave near-field distribution of air-filled tubes measured in the vertical (c) and horizontal (d) configurations. (e–f) Microwave near-field distribution of oil-filled tubes measured in the vertical (e) and horizontal (f) configurations. (g–h) Microwave near-field distribution of water-filled tubes measured in the vertical (e) and horizontal (f) configurations.
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