Discussion
What does a voltage standing wave ratio of 1 indicate?
Answer: D
A standing wave ratio of unity means no reflected wave, so all the power delivered to the feed enters the antenna. Total reflection gives an infinite ratio, as an open or short circuit termination does. A perfect match says nothing about efficiency, since a resistor terminating the cable would match perfectly and radiate nothing, and a purely reactive load reflects everything. Confusing a good match with a good antenna is one of the commonest errors in practice.
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