An open wire transmission line has R = 5 Ω /m, L = 5.2

An open wire transmission line has R = 5 Ω /m, L = 5.2 × 10^{– 8} H/n, G = 6.2 × 10^{– 3} S/m, C = 2.13 × 10^–10 F/m. The signal frequency is 4 GHz. The impedance of the line for which there will be no reflection is in rectangular and polar form—

1. 179.44 + j 26.50, 181.39 ∠8.40º
2. 15.623 + j 0.0205, 15.623 ∠– 0.075º
3. 200 + j 26.50, 181.39 ∠8.40º
4. 220 + j 26.50, 244 ∠– 0.75º

Evaluating the value by substituting in basic equation of characteristic impedance we get the impedance which is characteristic impedance

Z₀ =	√	R + jωL	= 15.623 ∠– 0.075
		G + jωC