A 602 lossless transmission line is terminated with an antenna of impedance of (27 + j30) Q. Use the Smith chart to find: the standing-wave ratio (ii) the reflection coefficient at the load (iii) the input impedance of the line, given that the line is 2.72 long (iv) the input admittance of the line. (i)
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- A 702 high-frequency lossless line is used at a frequency where 2 = 80cm with a load of 140+j91 2 a. Calculate the reflection coefficient and the SWR b. Determine the distance to the first voltage minimum from the load c. Determine the distance to the first voltage maximum from the load d. Calculate the impedance at the point where maximum voltages occurA 105MHz, 90 v peak signal is incident on a 50-ohm transmission line. The line is 125m long and is terminated in 300-ohm load. What is the SWR for this situation? Find the reflection coefficient.A coaxial cable is 10 meters long, and is filled with lossless Teflon, having a relative permittivity of 2.1. There is a matched load at the end of the line (this means that there is no reflection at the end, so there is only a signal traveling in the + z direction). At the input of the line, a sawtooth waveform is applied, having a peak voltage of 1.0 [V] and a duration of 1.0 [ns] (the time from the beginning of the waveform until the end). Make a plot (versus time) of what an oscilloscope would read if it were connected to the line at various locations, corresponding to the following values of z: 0.0 [m], 1.0 [m], 5 [m], 10 [m]. Plot out to 50 [ns] 1
- The capacitance per unit length and the characteristic impedance of a lossless transmission line are C and Zo respectively. The velocity of a travelling wave on the transmission line is (a) Z.C (c) Zo C - UN (b) Z.C (d) ZA lossless transmission with characteristic impedance of Z0 = 1002 and length = 52cm The line was terminated with a load of Zy= 30 + j502. According to what is given, a) The reflection coefficient in the load and the voltage standing wave ratio on the line (GDDO) Find out. b) Find the impedance and admittance at the line input. (for f = 750MHZ) c) For f = 750MHZ, the impedance and admittance values 2cm away from the load. (It will be assumed that = 20.)4- The charactersitic and load impedances of a lossless transmission Line are to and Z₁ = // Z₁. 1 a- Determine the voltage reflection coefficient at the load. Determine the voltage at the load, determine the power Consumed by the load. b. what is the power reflection coefficient defined by the ration power reflected incident power
- Q) A transmission line of length 0.40A has a characteristic impedance of 100 n and is terminated in a load impedance of (200+j180) n. Find using Smith chart: a) voltage reflection coefficient. b) voltage standing wave ratio. c) input impedance of the line.2. At a frequency of 4 MHz a parallel wire transmission line has the following parameters: R-0.025 /m, L=2 uH/m, G-0, C-5.56 pF/m. The line is 100 meters long, terminated in a resistance of 300 2 Calculate the following: i. Characteristic impedance of the line. ii. Standing wave ratio. iii. Voltage reflection coefficient of the load. iv. Recalculate the characteristic impedance assuming the transmission line is lossless. V. Calculate the propagation constant of the line B.A lossless transmission line with characteristic impedance of Z0 = 1000 and length l = 52cm was terminated with a load of Zy- 30 + j500. Based on the given, a) Find the reflection coefficient at the load and the standing wave ratio of the voltage on the line (GDDO). B) Find the impedance and admittance at the line input. (For f = 750MHZ) c) For f = 750MHZ, find the impedance and admittance values 2cm away from the load. (2 = 10 will be accepted.)
- b. Determine what is the necessary length and characteristic impedance of a cable to be used as a quarter-wave matching transformer so that it can eliminate the standing waves and subsequently provide a matched condition for a 180 O resistive load fed from a 45 0 transmission line. This condition is to exist for a frequency of 95 MHz. Given a velocity factor = 1.0.A lossless transmission line (TL) has a characteristic impedance of Zo= 250 N, a load impedance of ZR = 125 – j150 N and its operating frequency is fo Smith chart to evaluate the following parameters: 150 MHz. Use 1) The load admittance YR. 2) The reflection coefficient [Kr|ZOR 3) The voltage standing wave ratio (VSWR). Then calculate the maximum and minimum impedance in this TL, (Zmax and Zmin). 4) The distance from load to the nearest maximum (dmax) and minimum voltage positions (dmin) (in meter). 5) Find Zd at a distance away from a load by d= 3.3 2. Then calculate Zd using TL equation.A transmission line is not properly terminated thereby causing a a reflection coefficient magnitude of 0.5 where the reflected current is in phase with the incident current at the point of reflection. What is the impedance of the termination if the characteristic impedance of the line is 50 ohms?