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Which consequence results when standing wave antinodes form on high-power microwave waveguide runs?

A)Reduced dielectric breakdown strength
B)Increased waveguide characteristic impedance
C)Suppressed higher-order mode coupling
D)Enhanced skin depth current distribution

💡 Explanation

High voltage standing waves exceed dielectric strength because constructive interference by resonance yields high field intensities via dielectric breakdown, therefore insulation fails at the antinodes, rather than increased impedance or skin depth reduction. The mechanism is dielectric breakdown.

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