Magdalena Salazar-Palma - Modern Characterization of Electromagnetic Systems and its Associated Metrology

10 Chapter 10Figure 10.1 Antenna measurement carried out in an anechoic chamber.Figure 10.2 A diagram for the radiation pattern measurement system.Figure 10.3 Multiple reflections exist between the AUT and the probe in the ...Figure 10.4 Model of the measurement system with one PEC plate as the reflec...Figure 10.5 Dimensions of the helical antenna with a reflecting plate (AUT)....Figure 10.6 Dimensions of the 6‐element Yagi antenna (AUT).Figure 10.7 Dimensions of the horn antenna which is used as a probe.Figure 10.8 Current distribution on the feed dipole of the helical antenna w...Figure 10.9 Amplitude pattern for the horn antenna with one PEC plate as the...Figure 10.10 Phase pattern for the horn antenna with one PEC plate as the re...Figure 10.11 Amplitude of the environmental effects when one PEC plate is us...Figure 10.12 Amplitude pattern for the helical antenna with one PEC plate as...Figure 10.13 Phase pattern for the helical antenna with one PEC plate as the...Figure 10.14 Amplitude pattern for the Yagi antenna with one PEC plate as th...Figure 10.15 Phase pattern for the Yagi antenna with one PEC plate as the re...Figure 10.16 Model of the measurement system with two PEC plates as the refl...Figure 10.17 Current distribution on the feed dipole of the helical antenna ...Figure 10.18 Amplitude pattern for the horn antenna with two PEC plates as t...Figure 10.19 Phase pattern for the horn antenna with two PEC plates as the r...Figure 10.20 Amplitude of the environmental effects when two PEC plates are ...Figure 10.21 Amplitude pattern for the helical antenna with two PEC plates a...Figure 10.22 Phase pattern for the helical antenna with two PEC plates as th...Figure 10.23 Amplitude pattern for the Yagi antenna with two PEC plates as t...Figure 10.24 Phase pattern for the Yagi antenna with two PEC plates as the r...Figure 10.25 Model of the measurement system with four PEC plates as the ref...Figure 10.26 Current distribution on the feed dipole of the helical antenna ...Figure 10.27 Amplitude pattern for the horn antenna with four PEC plates as ...Figure 10.28 Phase pattern for the horn antenna with four PEC plates as the ...Figure 10.29 Amplitude of the environmental effects when four PEC plates are...Figure 10.30 Amplitude pattern for the helical antenna with four PEC plates ...Figure 10.31 Phase pattern for the helical antenna with four PEC plates as t...Figure 10.32 Amplitude pattern for the Yagi antenna with four PEC plates as ...Figure 10.33 Phase pattern for the Yagi antenna with four PEC plates as the ...Figure 10.34 Model of a parabolic reflector antenna with its feeding structu...Figure 10.35 Amplitude pattern for the parabolic reflector antenna.Figure 10.36 Phase pattern for the parabolic reflector antenna.Figure 10.37 Amplitude pattern for the new parabolic reflector antenna.Figure 10.38 Phase Amplitude pattern for the new parabolic reflector antenna...Figure 10.39 Model of the measurement system with a Yagi as the probe.Figure 10.40 Amplitude pattern for the horn antenna system with a Yagi as th...Figure 10.41 Phase pattern for the horn antenna system with a Yagi as the pr...Figure 10.42 Amplitude pattern for the helical antenna with a Yagi as the pr...Figure 10.43 Phase pattern for the helical antenna with a Yagi as the probe....Figure 10.44 Amplitude pattern for the Yagi antenna with a Yagi as the probe...Figure 10.45 Phase pattern for the Yagi antenna with a Yagi as the probe.Figure 10.46 Model of the measurement system with a parabolic reflector as t...Figure 10.47 Amplitude pattern for the horn antenna with a parabolic reflect...Figure 10.48 Phase pattern for the horn antenna with a parabolic reflector a...Figure 10.49 Amplitude pattern for the parabolic reflector antenna with a pa...Figure 10.50 Phase pattern for the parabolic reflector antenna with a parabo...Figure 10.51 Model of the measurement system with a dipole as the probe.Figure 10.52 Amplitude pattern for the horn antenna with a dipole as the pro...Figure 10.53 Phase pattern for the horn antenna with a dipole as the probe....Figure 10.54 Amplitude pattern for the helical antenna with a dipole as the ...Figure 10.55 Phase pattern for the helical antenna with a dipole as the prob...Figure 10.56 Amplitude pattern for the Yagi antenna with a dipole as the pro...Figure 10.57 Phase pattern for the Yagi antenna with a dipole as the probe....Figure 10.58 The new model of the measurement system with four PEC plates.Figure 10.59 Dimensions of a new horn antenna model (Probe).Figure 10.60 Dimensions of a new helical antenna model with a reflecting pla...Figure 10.61 Dimensions of a new 6‐element Yagi antenna model (AUT).Figure 10.62 Current distribution on the feed dipole of the helical antenna....Figure 10.63 Amplitude pattern for the horn antenna using the new model.Figure 10.64 Phase pattern for the horn antenna using the new model.Figure 10.65 Amplitude of the environmental effects using the new model.Figure 10.66 Amplitude pattern for the helical antenna using the new model....Figure 10.67 Phase pattern for the helical antenna using the new model.Figure 10.68 Amplitude pattern for the Yagi antenna using the new model.Figure 10.69 Phase pattern for the Yagi antenna using the new model.Figure 10.70 Comparison of the reconstructed patterns for the helical antenn...Figure 10.71 Comparison of the reconstructed patterns for the Yagi antenna u...Figure 10.72 Comparison of the models with different PEC plate widths.Figure 10.73 Comparison of the reconstructed patterns for the helical antenn...Figure 10.74 Comparison of the reconstructed patterns for the Yagi antenna u...Figure 10.75 Multiple reflections exist in the whole spatial domain.Figure 10.76 Model of a new parabolic reflector antenna with its feeding str...Figure 10.77 Model of the measurement system with four very wide PEC plates....Figure 10.78 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.79 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.80 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.81 Current distribution on the feed dipole on the Yagi antenna wit...Figure 10.82 Current distribution on the feed dipole of the parabolic reflec...Figure 10.83 Three‐dimensional plot of the reconstructed pattern for the Yag...Figure 10.84 Comparison of the reconstructed patterns for the Yagi antenna a...Figure 10.85 Comparison of the reconstructed patterns for the Yagi antenna a...Figure 10.86 Three‐dimensional plot of the reconstructed pattern for the par...Figure 10.87 Comparison of the reconstructed patterns for the parabolic refl...Figure 10.88 Comparison of the reconstructed patterns for the parabolic refl...Figure 10.89 Model of the measurement system with four PEC plates and the gr...Figure 10.90 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.91 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.92 Three‐dimensional plot of the ideal and non‐ideal radiation pat...Figure 10.93 Current distribution on the feed dipole of the Yagi antenna wit...Figure 10.94 Three‐dimensional plot of the reconstructed pattern for the Yag...Figure 10.95 Comparison of the reconstructed patterns for the Yagi antenna a...Figure 10.96 Comparison of the reconstructed patterns for the Yagi antenna a...Figure 10.97 Three‐dimensional plot of the reconstructed pattern for the par...Figure 10.98 Comparison of the reconstructed patterns for the parabolic refl...Figure 10.99 Comparison of the reconstructed patterns for the parabolic refl...Figure 10.100 Model of the measurement system with six PEC plates forming an...Figure 10.101 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.102 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.103 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.104 Current distribution on the feed dipole of the Yagi antenna wi...Figure 10.105 Three‐dimensional plot of the reconstructed pattern for the Ya...Figure 10.106 Comparison of the reconstructed patterns for the Yagi antenna ...Figure 10.107 Comparison of the reconstructed patterns for the Yagi antenna ...Figure 10.108 Three‐dimensional plot of the reconstructed pattern of the par...Figure 10.109 Comparison of the reconstructed patterns for the parabolic ref...Figure 10.110 Comparison of the reconstructed patterns for the parabolic ref...Figure 10.111 Model of the measurement system within a closed PEC box.Figure 10.112 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.113 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.114 Three‐dimensional plot of the ideal and non‐ideal radiation pa...Figure 10.115 Current distribution on the feed dipole of the Yagi antenna. (...Figure 10.116 Model of the measurement system within a closed box with 6 die...Figure 10.117 Current distribution on the feed dipole of the Yagi antenna wh...Figure 10.118 Comparison of the patterns for the Yagi antenna along differen...Figure 10.119 Comparison of the patterns for the Yagi antenna along differen...Figure 10.120 Comparison of the patterns for the parabolic reflector antenna...Figure 10.121 Comparison of the patterns for the parabolic reflector antenna...Figure 10.122 Data mapping illustration.Figure 10.123 Points of complex roots on the unit circle.