7.57 Phase inverter designs [43]. (a) Simulation model of the 180° ph...Figure 7.58 Simulated SIW‐to‐HMSIW transition model, E‐field distribution an...Figure 7.59 Simulation model of the HMSIW‐based LWA [43]. (a) Perspective vi...Figure 7.60 Simulated HMSIW‐based LWA results for its states S1 and S5. (a) ...Figure 7.61 Simulated gain patterns of the HMSIW‐based LWA. Solid line: with...Figure 7.62 Fabricated prototype and measurement setup.Figure 7.63 Simulated and measured S‐parameters.Figure 7.64 Simulated 3 dB contours showing the total coverage area of the H...Figure 7.65 Simulated and measured normalized co‐ and cross‐polarization pat...Figure 7.66 Directivity and realized gain results of the HMSIW‐based LWA for...8 Chapter 8Figure 8.1 The array factor and its periodicity for dx = dy = λ/2, Tu =...Figure 8.2 Design details of the parasitic‐patch‐based antenna used in the M...Figure 8.3 Simulated performance characteristics of the parasitic patch‐base...Figure 8.4 Two versions of the 128‐element array layout. (a) Conventional fu...Figure 8.5 The gain patterns of the thinned and full arrays, both with 128 e...Figure 8.6 A histogram comparison of the maximum SLL obtained for the 128 el...Figure 8.7 Configuration of a 3 × 3 planar array (a) with, and (b) without r...Figure 8.8 Illustration of the definitions of the CoP and XP directions.Figure 8.9 Design details of the U‐slot‐loaded microstrip antenna element ut...Figure 8.10 The synthesized flat‐top CoP patterns and XP patterns at the ini...Figure 8.11 The synthesized rotation angles and excitation phases at the ini...Figure 8.12 The fabricated 24‐element U‐slot microstrip antenna array with r...Figure 8.13 The measured CoP and XP patterns as well as the full‐wave simula...Figure 8.14 The synthesized circular flat‐top (a) CoP and (b) XP patterns an...Figure 8.15 The synthesized element‐rotated planar array that radiates the s...Figure 8.16 Schematic diagram of a nonuniformly spaced linear array and the ...Figure 8.17 The element‐rotated dipole array with both the global and local ...Figure 8.18 The sum and difference patterns obtained by the joint rotation a...Figure 8.19 The synthesized and full‐wave simulated sum and difference patte...Figure 8.20 An example of the antenna radiation patterns for a linear array ...Figure 8.21 The dual‐beam for the 24‐element linear array synthesized with t...Figure 8.22 The dual‐beam pattern of the 32‐element linear array includes on...
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