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The characteristic impedance of a waveguide is fixed.

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in Analog Communications by (122k points)
The characteristic impedance of a waveguide is fixed.

(a) True

(b) False

This question was addressed to me in an internship interview.

Question is taken from Practicality of Antenna in division Modulation of Analog Communications

1 Answer

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Right answer is (b) False

Best explanation: Characteristic Impedance is the ratio of voltage amplitude to current amplitude of a propagating electromagnetic wave. The characteristic impedance of a waveguide is not fixed. It depends on the frequency it carries. It also depends on the longer dimension of its cross section.

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