Only do the Circle ones please: 19) In the tandem connection of transmission lin
ID: 2990205 • Letter: O
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Only do the Circle ones please:
19) In the tandem connection of transmission lines shown in Figure P7.19, determine the following Input impedance as seen by the generator. (b) Input voltage and power to transmission line 1. (c) Power delivered to load terminating transmission line 2. Za 78 +i10 Transmission line 1 R, 11 n Transmission line 2 ZL 60 100 evo 01 75 2 02 50 2 i180 n 300 S2 d1 /A1 0.22 Connector Figure P7.19 Tandem connection of two transmission lines with a lossy connector. 20, A transmission line with a normalized load admittance of 0.55 j0.27 is to be matched using a single stub (short circuited). Determine the minimum distance of the stub from the load and the required stub length. 21 An open-wire transmission line is constructed of two parallel wires spaced 3 cm apart, each of 1.29 mm radius. At 100 MHz, the line has these constants: r-600 s/km, 1.3 mHKm, 8.8 nF/km, and g is negligible. (a) Calculate the characteristic impedance zo and the propagation constant of the trans- mission line. A 500-m section of this transmission line is terminated by an antenna of impedance (b) n at 100 MHz as shown in Figure P7.21. To test the antenna- transmission-ine operation, a generator of voltage vo 100e Vand internal resis- tance of R 125 n, is connected to the other end of the line as also shown in Figure P7.21. Determine the admittance Y that should be connected to the input terminal of the line so that the generator will see an in that is matched to the generator internal resistance.Explanation / Answer
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