Which of the following represents the best standing wave ratio (SWR)?

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Multiple Choice

Which of the following represents the best standing wave ratio (SWR)?

The best standing wave ratio is the one that indicates a perfect match between the transmission line and the load. When the load impedance equals the line’s characteristic impedance, there are no reflections and the power transfers cleanly to the load, giving an SWR of 1:1. Any mismatch causes part of the power to reflect back, creating standing waves and increasing the SWR above 1:1. The other options represent increasing amounts of reflection and worse power transfer, so 1:1 is the ideal.

The best standing wave ratio is the one that indicates a perfect match between the transmission line and the load. When the load impedance equals the line’s characteristic impedance, there are no reflections and the power transfers cleanly to the load, giving an SWR of 1:1. Any mismatch causes part of the power to reflect back, creating standing waves and increasing the SWR above 1:1. The other options represent increasing amounts of reflection and worse power transfer, so 1:1 is the ideal.

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