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A lossless transmission line is terminated with a load which reflects a part of the incident power. The measured VSWR is 2. The percentage of the power that is reflected back is (A) 57.73 (B) 33.33 (C) 0.11 (D) 11.11 |
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Answer» Correct option (D) 11.11 Explanation: VSWR = 2 Reflection coefficient is given by, |Γ| = (s - 1)/(s + 1) = (2 - 1)/(2 + 1) = 1/3 The ratio of reflected power to incident power is given by, Pr/Pi = |Γ|2 where, Γ = reflection coefficient at load Pr/Pi = (1/3)2 = 1/9 = 0.11 In percentage, Pr/Pi = 11.11% |
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