6. A 3000 transmission line is 0.8 m long and terminated with a short circuit. The line is operating in air with a wavelength of 0.8 m and is lossless. (a) If input voltage is 10V, what is the maximum voltage amplitude at any point on the line? (b) What is the current amplitude in the short circuit?
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- State the difference between high and low frequency signals travel in typical transmission lines.1. On a lossless 500 coaxial transmission line with a shorted load: a. a voltage minimum will occur at the load. b. a current maximum will occur at the load. c. a voltage maximum will occur A/4 back from the load. d. the voltage and current are in phase. e. the voltage and current are 90° out of phase. f. the standing wave moves toward the source. 2. Sketch the TDR trace which would be observed by connecting a 100 ft. length of RG-8/U Type coax to a TDR and terminating the coax in a resistance of 100 ohms. Calculate and illustrate (show all parameter names and numeric values) the relative voltages of the incident and reflected waves and the 1 and 2-way time delays as illustrated in the file "For the final exam" emailed to you earlier this week. RG-8/U Type coax has the following specifications: Zo = 50 Ohm, VF 66%. 3. Determine Zin of a lossless 50 transmission line X/4 long having a ZL = 50 Q.Due to line mismatch, a voltage standing wave ratio of 10 is calculated. The total volatge at the load is 5Vrms. What is the peak amplitude of the incident voltage at the load? Assume that the incident and reflected voltages are in phase at the point of reflection.
- A lossless 50 ohms transmission line is connected to unknown load impedance. Voltage measurements along the line reveal that the maximum and minimum voltage values are (√2+1)volts and (√2−1) volts respectively. The distance at which maximum voltage is observed has been found to be (15 lamnda(?))/(16). Determine:i. The load reflectionii. Load impedanceiii. The distance (in units of lamnda ?) at which first voltage minimum will be observedA 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 lossless 50 ohms transmission line is connected to unknown load impedance. Voltage measurements along the line reveal that the maximum and minimum voltage values are (√2 + 1)volts and (√2 − 1) volts respectively. The distance at which maximum voltage is observed has been found to be 15? /16. Determine:i. The load reflectionii. Load impedanceiii. The distance (in units of ?) at which first voltage minimum will be observed
- a) Discuss the effect of primary constants of a transmission lines onsignal propagation b) Using mathematical theories discuss how the standing wave phenomenon comes about and what can be done to eliminate it completely. c) Develop an expression for voltage and current traveling on atransmission line assuming all its primary constants are uniformlydistributed.g) Why the Capacitance effect is neglected in Short Transmission Line. h) Distinguish between Lumped or Distributed elements in a Transmission Line.b. A lossless 50 ohms transmission line is connected to unknown load impedance. Voltage measurements along the line reveal that the maximum and minimum voltage values are (v2 + 1)volts and (V2 – 1) volts respectively. The distance at which maximum voltage is observed has been found to be Determine: 16 i. The load reflection ii. Load impedance The distance (in units of 2) at which first voltage minimum will be observed jii.
- 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] 1Which Transmission Line Parameter is neglected or ignored in most classifications of Transmission Line Equivalent Circuits? A. The Line Inductance B. The Line Resistance C. The Shunt Conductance D. The Shunt CapacitanceA lossless 50Q transmission line was terminated with a load of = 17.7+ jl1.82. The length of the line is = 1/ 6. The reflection coefficients at the entrance of the line and at the load calculation.