Question

Question 2: [20 Marks] In the transmission lines, some electrical powers is not absorbed by the load and reflected back along the transmission line or feeder. To avoid device breakdown, especially within RF design areas, this part is often measured by a metric called voltage standing wave ratio (VSWR). a) Find the maximum and minimum value of VSWR for a transmission line? [8 Marks] b) Design a 5 Km lossless transmission line with phase constant of $pi/2$ for an open circuit load of 10j $Omega$ at 100 MHz (Fine L and C). [12 Marks] Question 3: [20 Marks] A lossless transmission line with length, $l=10m$ and characteristic impedance, $Z_o=50Omega$ is connected to a voltage source $v_g(t)=20cos(6pi imes10^9t)$, with $R_g=100Omega$ and a load, $Z_L=350Omega$, as shown in Figure Q3. Fig. Q3. Circuit for Question 3. Determine: a) The voltage and current on the line [9 Marks] b) The voltage at the source and load points. [4 Marks] c) The reflection and VSWR on the line. [3 Marks] d) The averaged delivered power to the load. [4 Marks]

          Question 2:
[20 Marks]
In the transmission lines, some electrical powers is not absorbed by the load and reflected back
along the transmission line or feeder. To avoid device breakdown, especially within RF design
areas, this part is often measured by a metric called voltage standing wave ratio (VSWR).
a)
Find the maximum and minimum value of VSWR for a transmission line?
[8 Marks]
b)
Design a 5 Km lossless transmission line with phase constant of $pi/2$ for an open circuit load of
10j $Omega$ at 100 MHz (Fine L and C).
[12 Marks]
Question 3:
[20 Marks]
A lossless transmission line with length, $l=10m$ and characteristic impedance, $Z_o=50Omega$ is
connected to a voltage source $v_g(t)=20cos(6pi	imes10^9t)$, with $R_g=100Omega$ and a load, $Z_L=350Omega$,
as shown in Figure Q3.
Fig. Q3. Circuit for Question 3.
Determine:
a)
The voltage and current on the line
[9 Marks]
b)
The voltage at the source and load points.
[4 Marks]
c)
The reflection and VSWR on the line.
[3 Marks]
d)
The averaged delivered power to the load.
[4 Marks]

Question 2:
[20 Marks]
In the transmission lines, some electrical powers is not absorbed by the load and reflected back
along the transmission line or feeder. To avoid device breakdown, especially within RF design
areas, this part is often measured by a metric called voltage standing wave ratio (VSWR).
a)
Find the maximum and minimum value of VSWR for a transmission line?
[8 Marks]
b)
Design a 5 Km lossless transmission line with phase constant of pi/2 for an open circuit load of
10j Omega at 100 MHz (Fine L and C).
[12 Marks]
Question 3:
[20 Marks]
A lossless transmission line with length, l=10m and characteristic impedance, Zo=50Omega is
connected to a voltage source vg(t)=20cos(6pi imes10^9t), with Rg=100Omega and a load, ZL=350Omega,
as shown in Figure Q3.
Fig. Q3. Circuit for Question 3.
Determine:
a)
The voltage and current on the line
[9 Marks]
b)
The voltage at the source and load points.
[4 Marks]
c)
The reflection and VSWR on the line.
[3 Marks]
d)
The averaged delivered power to the load.
[4 Marks]

Added by Agust-N S.

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