What is characteristic impedance of dielectric-filled line

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Reference no: EM13251188

A coaxial line is filled with a very slightly lossy material with a relative dielectric constant of 5

The line would have a characteristic impedance of 100 ohm if it was air-filled.

(a) What is the characteristic impedance of the dielectric-filled line?

(b) What is the propagation constant at 500 MHz? Use the fact that the velocity of an

EM wave in a lossless air-filled line is the same as that of free-space propagation in air. That is, the propagation constant is the same.

(c) What is the input·impedance of the line if it has an electrical length of 90° and it is terminated in a 35 ohm resistor?

(d) What is the input impedance of the line if it has an electrical length of 180° and is terminated in an inductor of impedance j35 ohm?

(e) What is the input impedance of the line if it is l km long? Use reasonable approximations,remembering that the line is slightly lossy.

Reference no: EM13251188

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