A transmission line connects a transmitter of 1.2 MHz to the antenna located 50 m away from it. If ?? of the line equals 500 Ω, what is the input impedance of this line if antenna end: a) Open circuited b) Short circuited
A transmission line connects a transmitter of 1.2 MHz to the antenna located 50 m away...
You have an antenna with an input impedance of Z (140 -j35)2 at f 120 MHz. You would like to match this load to a 70Ω transmission line using a single stub tuner (vp-2.2x108 m/s). Using the Smith chart, determine the distance d away from the load and the length l of a short-circuited parallel stub to accomplish the matching goal at the design frequency. Estimate the reduction in radiated power if the operating frequency is changed to f 125...
a. A 50 air-filled transmission line is working at 3 MHz on a length of 5.21. The line is terminated with a load impedance of ZĽ = 40 + j25 12. Evaluate: i. VSWR using both Smith Chart and equation. Compare both answers. (CO3: P04 - 3 marks) ii. Reflection coefficient at the load using both Smith Chart and equation. Compare both answers. (CO3: P04 - 3 marks) iii. Input impedance and input admittance using the Smith Chart. (CO3: PO4...
USE QUARTER-WAVE METHOD
11.56 A 50 2 lossless transmission line that is 20 ml 120 + j220 Ω ossless transmission line that is 20 m long is terminated into a load. To perfectly match, what should be the length and location of a short-circuited stub line? Assume an operating frequency of 10 MHz. am
11.56 A 50 2 lossless transmission line that is 20 ml 120 + j220 Ω ossless transmission line that is 20 m long is terminated into...
A radio transmitter is connected to an antenna having impedance 8 + j40 Ω with a 50 coaxial cable. If the transmitter can deliver 30 W to the load, how much power is delivered to the antenna? a. (10 Marks) b. Alossless 50 ohms transmission line is connected to unknown load impedance. Voltage measurements along the line reveal that the maximum and minimum voltage values are (1)volts and (V2 - 1)volts respectively. The distance at which maximum voltage is observed...
A section of transmission line of 50 ohm characteristic impedance and 3x10^8 m/s propagation velocity carries simultaneously 300 MHz and 150 MHz signals. The line is terminated in a parallel connection of two sections of the same line, both sections terminated in 50 ohm resistance designated A and B. A 50 cm long open-circuited section is connected 50 cm from the connection to the driving line across the line terminated in resistance A. A 50 cm long short-circuited section (of...
A 50 Ω transmission line operates at 160 MHz and is terminated by a load of 50 + j30 Ω. If its wave speed is c/2 and the input impedance is to be made real, calculate the minimum possible length of the line and the corresponding input impedance.
The single-stub impedance matching method is used to match an antenna with impedance ?" = 35 − ?47.5 (Ω) to a 50 (Ω) transmission line. Due to the structure of the antenna tower, the transmission line segment within 0.1? from the antenna is NOT accessible. Find the closest position (but with distance greater than 0.1? from the antenna) and the length of the short–circuited stub.
A transmission line has an unknown characteristic impedance of Zo. The length L of the transmission line is also unknown. When the transmission line is short circuited (Zi - 0) at one end, the measured input impedance at the other end is Zv Zsc. When the transmission line is open circuited (Zi- oo) at one end, the measured input impedance at the other end is ZiNZoc Find the characteristic impedance Zo of the transmission line.
The local FM radio station broadcasts at 97.1 MHz. Suppose they use a 75-Ω transmission line to feed the broadcast antenna. If the antenna impedance is 50 Ω, (a) find the length and characteristic impedance for a quarter-wave transformer to match the antenna to the line. Assume the phase velocity is the speed of light. (b) What fraction of the power is delivered to the antenna with the original line relative to the power delivered to it with the matched...
10. An antenna, characterized by Zi = 73+j42.5 Q, is fed by twin lead transmission line with Zo 75 Q at 100 MHz. Design a matching network using a short-circuited, shunt connected stub to match the load to the generator, characterized by a 750 impedance; a.