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← ScienceWhich outcome results when a microwave waveguide section experiences significant impedance mismatch?
A)Increased standing wave ratio (SWR)✓
B)Decreased signal propagation velocity
C)Elevated dielectric breakdown threshold
D)Reduced waveguide group delay distortion
💡 Explanation
When a significant impedance mismatch occurs, power reflection escalates because the microwave energy is not efficiently transferred to the load, increasing both reflected wave amplitude and SWR. Therefore, an increased standing wave ratio results, rather than alteration of propagation velocity, breakdown threshold, or group delay distortion which depend on material properties.
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