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Q1:14. Plot the following impedance points on smith chart. i. Z1= 100+j50 ii. Z2 = 75-j100 iii. Z3 = j200 iv. Z4 = 150See Answer
Q2:In the given figure 2, simulated and measured S11 plots of an antenna designed are given. i. Simulated without defected ground structure (DGS), ii. simulated with DGS, iii. Measured with DGS. State the impedance bandwidth of these three S11 plots and the points where resonances occur in each plot. 13. $11 (dB) -10 -20 -30 -40 24 26 28 Simulated without DGS Simulated with DGS -Measured with DGS 30 32 Frequency (GHz) Figure2: S11 vs. frequency plot of the antenna. 34 36 38 40See Answer
Q3:6. Find the characteristic impedance Zo of the lossless transmission line whose unit length of inductance L = 10 mH and unit length of capacitance C = 200 μF.See Answer
Q4:In the figure 1 given below, determine the frequency range where the antenna efficiency is above 80%. And state the frequency where antenna gain isSee Answer
Q5:14. Plot the following impedance points on smith chart. i. Z1= 100+j50 ii. Z2 = 75-j100 iii. Z3 = j200 iv. Z4 = 150See Answer
Q6:15. Plot the following on smith chart i. Z5 = infinity (Open circuit) ii. Z6 = 0 (short circuit) iii. Z7 = 50 (Z.) iv. Z8 = 184-j900See Answer
Q7:EXPERIMENT 5 • Measurement of Impedance (Use component #507 - termination - as an additional load): Please do the following: 1. Record all your work in your individual lab notebook in an orderly fashion. 2. Write a group formal report in which all group/team members participate fully. Use the formal lab report format provided! Your report must address all the questions, objectives, etc. in the handout. Please DO NOT forget RESULTS and CONCLUSIONS!See Answer
Q8:11 The load impedance (ZL) of 60- j80 Q terminates a transmission line with a characteristic impedance (Zo) of 50 Q. A parallel short-circuited stub is used to match the line to its load. Use the Smith Chart to calculate: a) the normalised load impedance, load reflection coefficient |L|, voltage- standing-wave-ratio (VSWR), b) normalised load admittance (YL), stub admittance (y2), c) the distance of the stub from the load 'd', d) length of the stub 'L'. matched line (y,+ y₁ =1) 32=jb y₁ =1-jb [5] [5] [5] [5]See Answer
Q9:Question 2 Er For a lossless transmission line, λ = 5.4 cm at 1.6 GHz. find e, of the insulating material. 1 pts 11/n Question 1 Eeff Take Quiz Er A lossless microstrip line uses a 0.9-mm wide conducting strip over a 0.7-cm thick. substrate with E = 1.8. Determine the line parameter Eeff at 9 GHz. = Question 2 (9 1 pts 1 pts For a lossless transmission line, λ = 5.4 cm at 1.6 GHz. find &r of the insulating material. ? Exit Question 3 Take Quiz R 3.85 N/m L = 1.35 x 10-6 H/m G 1.77 x 10-6 S/m C 3.8 x 10-11 F/m = At 1.3 GHz, given a two-wire line with the following parameters: B = rad/m Question 4 At 2.6 GHz, given a two-wire line w following parameters: (9 1 pts 1 pts ? Exit Question 4 R 3.46 2/m L'= 1.23 x 10-6 H/m G = 2.29 x 10-6 S/m C At 2.6 GHz, given a two-wire line with the following parameters: = Take Quiz = Zo = 1.04 x 10-11 F/m Find the characteristic impedance, Zo, and approximate it as being equal to only the real part. (9 Ω 1 pts Question 5 1 pts ? A two wire air line has the following line Exit Take Quiz Question 5 A two wire air line has the following line parameters: R = 0.458 mQ/m L = 2.23 μH/m G = 0 S/m B = C' = 9.8 pF/m For operation at 3.1 kHz, determine the phase constant B. x 10-4 rad/m Question 6 1 pts (9 - 1 1 pts ? A lossless microstrip line uses a 1.3. wide conducting strip over a 0.9-cm thick cubetroto with Dotorming the ling Exit Question 6 Take Quiz B = A lossless microstrip line uses a 1.3-mm wide conducting strip over a 0.9-cm thick substrate with Er = 1.7. Determine the line parameter in rad/m at 13 GHz. = rad/m Question 7 = R 0.425 mQ/m L = 2.56 μH/m G = 0 S/m C = 7.929 pF/m 1 pts A two wire air line has the following line parameters: (9 1 pts ? For operation at 4.8 kHz. determine the ExitSee Answer
Q10:6. The line shown is 3/8A long and its normalized input impedance is Z =- j2.5. (a) What is the normalized receiving or load end impedance, zu? (b) What is the distance from the load to the first voltage minimum? (c) What length of open-circuited line could be used to replace zi? ZG + + VG ~ Va Zo VL ZŁ d 7. Use a shorted 500 shunt stub to match a load = 25 -j50 to a 5002 line. Find the position of the stub d and Length of the Stub L. - d Zo = 50 02 Zo = 50 0 ZL - 25-950 Zo = 50 0 Shorted stubSee Answer
Q11:1. If a signal has a gain (G) equals to 32000 (linear), what is the gain in dB? How much will be the remaining power (in %), if the gain is reduced to 6dB.See Answer
Q12:4. An amplifier has an input power of 0.5 watts and its output power of 75 watts. What is the gain of the amplifier in dB?See Answer
Q13:5. Calculate the length of a quarter-wave transmission line where frequency is 1800 MHz.See Answer
Q14:7. Calculate the gain of the antenna (in dB) if the radiation resistance of the antenna is 52 £2, and loss resistance is 12 2. The antenna directivity is 18 (linear).See Answer
Q15:8. Calculate the radiation resistance when the loss resistance of an antenna is 82, the directivity of the antenna is 20 (linear) and power gain is 18 (linear).See Answer
Q16:9. If the reflection coefficient (r) is 0.5, calculate the VSWR.See Answer
Q17:11. Calculate the reflection coefficient when the VSWR= 1.5. Also calculate the corresponding return loss in dB.See Answer
Q18:In the figure 1 given below,determine the frequency rangewhere the antenna efficiency is above 80%.And state the frequencywhere antenna gain is maximum in the plot.一-.E重k起成y70如2241o9达yGlu)Figurel:Gain and efficiency vs.frequency plot.See Answer
Q19:In the figure 2, simulated and measured S11 plots of an antenna designed are given. 1. SimulatedSee Answer
Q20:14. Plot the following impedance points on smith chart. i. Z1= 100+j50 ii. Z2 = 75-j100 iii. Z3 = j200 iv. Z4 = 150See Answer

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