ECE422 Radio and Microwave Wireless Systems





Laboratory Experiments and Information

The following is a list of lab experiments that are conducted during the term. The first three experiments consitute the structured labs that are a part of ECE422. Please consult the course schedule to determine when these labs are run. The last link leads to information on the Software Defined Radio (SDR) kits, which form the unstructured part of the lab components which you will pursue outside of the regular scheduled experiments.

Please note that the drop box for labs is Box # 36, which is located on the 4th floor of the Bahen building just north of the St. George St. elevators. Labs are due at 16:00, two weeks after the lab experiment is held. The due date for the SDR lab report will be announced later.



Old Tests

Old tests appear here, for study purposes.

  • 2016 Mini-test 1 | Answers: 1a) Directional, U(θ) = |E0|^2/(2η)*cos^3(θ) 1b) 1.308 rad / 1.710 sr 1c) 9.03 dBi 1d) LHCP 2a) AF = j2*sin(k*S/2*cos(θ)) 2b) 48.2°, 131.8° 2c) pattern multiplication 2d) α = 3π/2
  • 2016 Midterm | Answers: 1a) AF = j*2*sin(k*w/2*sinθ*sinφ 1b) AF = j*k*w*sinθ*sinφ 1c) use pattern multiplication and field of dipole along x axis (not shown) 1d) use pattern multiplication and field of dipole along y axis (not shown) 1e) E = \hat(φ)*π*A*I/λ^2*exp(-j*k*r)/r*sinsinθ 2a) Nulls at 0°, 41.4°, 60°, 75.5°, 104.5°, 120°, 138.6°, 180° 2b) 11° 2c) 104.5° 1d) d=λ/3, α=-2π/3 3a) 4.44h 3b) 1.77e-18 W 3c) cos^2 plot with nulls every 0.2 sec 3d) use CP antennas to avoid periodic nulling as spacecraft spins 3e) 90.7°
  • 2016 Mini-test 2 | Answers: 1a) 35.7 km 1b) 47.6 km 1c) 1.595 uW/sq.m 1d) 3.640 uW/sq.m 1e) 3.76E-15 W/sq.m 1f) 77.5 mm 2a) -104.8 dBW 2b) 19.76 dB 2c) 2.846 MHz 2d) 78.2° 2e) 228 km 2f) 13.7 dB
  • 2016 Final exam | Answers: 1a) 9.479E12 sq.m 1b) -178.5 dBW 1c) 19.58 dB 1d) 3.70 m 1e) 1.91 dB 2a) 37.2 dBW, 27.5° 2b) 4.032 dB 2c) 230.44 K 2d) -4.85 dB-K 2e) 6.10 dB 2f) RX frequency should be shifted to account for Doppler 3a) -118.2 dBW 3b) -1.34 dB 3c) 150.8 m 3d) -104.3 dBW 3d) 4.12 m 3e) 580 MHz 4a) Nulls at 75.5°, 90°, 104.5°, 180° 4b) D=N 4c) -90° phase shift between elements 4d) Null in the direction of the main beam 4e) C-B-D-A
  • 2015 Quiz 1 | Answers: 1a) 21.3 degrees 1b) 0.1256 sr 1c) 19.1 dBi 1d) 6.15 ohms 1e) 64.1 W/sr, 6.41E-5 W/m^2 2a) Pattern multiplication cannot be directly applied since the elements are dissimilar. However, it can be applied to the array of dipoles and superposition applied. 2b) 0 deg, 65.4 deg, 114.6 deg, 180 deg 2d) RHCP
  • 2015 Midterm | Answers: 1a) 114.6 deg, 65.4 deg, 146.4 deg, 33.6 deg 1b) -12.6 dB 1c) -1.615 rad 1d) -0.8*pi rad 2a) LHEP AR = -3 2b) 2.67 nW 2c) 0.2 2d) I1 = j*|I2| 3a) 43.8 dBm 3b) 873 km 3c) 36.8 dBm
  • 2015 Quiz 2 | Answers: 1a) 30 km 1b) -85.91 dBw 1c) 38.7λ 1d) 40.7 dBi; -40.0 dBw 2a) -125.5 dBW 2b) 309.91 K 2c) 351.91 K 2d) 6.17 dB 2e) M decreases
  • 2015 Final exam | Full solution | Answers: 1a) Nulls at h2 = 22.4m, 44.9m 1d) -106.8 dBW 2a) 51.0 dBW 2b) 27.3 dB-K 2c) CNR only improves by 2 dB 2d) Nx=Ny=48 3a) 25.1 dBi 3b) 60 GHz ± 400 Hz, 3.26 pW 3c) 39.1 W 3e) CIR = -30.1 dB 4a) sinc^4(D*cosθ/(2λ)) 4b) sinc^4(D*cosφ/(2λ)) 4c) 0.636 sr / 10 dB 4d) 23 dB 4e) zI + jxI
  • 2013 Quiz 1 | Answers: 1a) LP, AR = infinity 1d) 10 dBi 1e) 10 ohms 2c) AF = j2*sin(pi/2*cos(theta)
  • 2013 Midterm | 1a) 3.7 nV/m b) -139.4 dBm 1c) 18.36 m 1d) 1.268e9 km 1e) -140.7 dBm 2a) 41.4, 60, 73.5, 104.5, 120, 138.6 deg 2c) pi/2 3a) Rrad = Wrad = 0 3b) h = λ/4
  • 2013 Quiz 2 | Answers: 1a) 10 km 1b) 11.11 dB 1c) -143.0 dBW 1d) 62.2 cm 2a) -138.1 dBw 2b) -138.2 dBW 2c) 50.5 m 2d) 472.5 m
  • 2013 Final exam | Answers: 1a) 27.2°, 48.1°, 63.6°, 77.2°, 102.8°, 116.4°, 131.8°, 152.7° 1b) 440.9 sq. m 1c) N ≥ 16 2a) -88.5 dBW/sqm 2b) 202.9 1/K 2c) 401.0 K 2d) 5.5 dB 3a) 7.07 dBi 3b) 63.9 km 3c) 144.9 m 3d) 3.12 dB 4b) RHEP, AR=2 4c) LHEP, AR=-4/3 4d) 30Δl, 40Δl 4e) -6.99 dB
  • 2012 Quiz 1 | Answers: 1c) Max radiation at theta= 90 degrees, HPBW = 46 degrees 2d) 5.044 sr, D = 2.5 2c) There is still a null at theta=26.5 deg in the E-plane 1d) LP
  • 2012 Midterm | 1a) D = 3 dBi, G = 0 dBi 1b) -39.25 dBm 1c) 34.46 km 1d) -40.22 dBm / 30.8 km 2a) 180, 138.5, 120, 104.5 75.5, 60, 41.4, 0 deg 2b) 12.8 deg 2c) SLL = -13.5 dB 2d) -120 deg shift between elements 3c) d = λ/4
  • 2012 Quiz 2 | Answers: 1a) -119.3 dBW 1b) 5.7m 1c) 129 km; 22.2 dBW 1d) RHCP; LHCP 2a) -105.1 dBW 2b) -105.1 dBW 2c) 100%, 100%, 100%, 86.7% 2d) 80 km
  • 2012 Final exam | Answers: 1a) 2.76 pW/sqm 1b) 23.4 dB 1c) 12.59 dBi 1d) 1.07 sqm 3b) 210.1 K 3c) -18.5 dB-K 3d) 6.1 dB 3e) 43.7° 4a) 41.9 km 4b) -83.4 dBm 4c) -93.8 dBm 4d) 0.0523 m