A lossless 75Q transmission line is terminated by a load impedance of 90+j750. Using the Smith chart, find (a) Load reflection coefficient, (b) VSWR, (c) Return loss and Insertion loss,
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- A 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.5-A lossless T.L. has Zo = 100 Q and is loaded by ZL. The VSWR = 2. The first two voltage minima are located at z= -10 and -35 Cm from the load where z = 0. Determine ZL.g) Why the Capacitance effect is neglected in Short Transmission Line. h) Distinguish between Lumped or Distributed elements in a Transmission Line.
- 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 90⁰ out of phase. f. the standing wave moves toward the source.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 powerSimplified or ideal equivalent circuit representation of transmission line at RF consists of: a. R and C b. R, L, C and G c. Rand G d. Land C Characteristic impedance at RF frequencies is purely: a. conductive b. resistive c. inductive d. capacitive Radiation loss of a transmission line: a. independent of frequency b. increases with frequency c. decreases with frequency d. increases at some frequency range and then decreases with frequency
- A lossless transmission line has a capacitance per unit length of 90 uF/m (microFarad/meter) and an inductance per unit length of 1 nH/m. The load impedance ZI is purely resistive. Both the load impedance and the generator impedance are 50 ohms. Source voltage amplitude is unknown at this point. Find the characteristic impedance and the propagation velocity for this transmission line!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.Transmission line with a load Zl = 100 + i80 ohm with characteristic impedance of Z0 = 5 ohm is designed. The transmission line operates at 100 MHz, where is matched with a shunt single- stub tuner. a)Calculate the stub positions. b)Calculate the stub length where open circuit stub is used. c) Calculate the stub length where short circuit stub is used.
- For 860 MHz carrier frequency and for the geometry and graph shown in figures Q3A and Q3B, determine: A) the loss due to knife-edge diffraction, and6. The short circuit load is connected to a transmission line. When the transmission line length is between lumped element. However, when zero and a quarter wavelength, the circuit will behave like the transmission line length is between a quarter wavelength and a half wavelength, the circuit will lumped element. behave likeDerive an expression for sag in a transmission line of equal height poles