Variable permittivity dielectric material loaded stepped-horn antenna

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Figure 4.25 Aperture efficiency versus frequency of the stepped-horn antennas for (εr1 =1.0 5r2 = 1 .0), (εr1 = 1.4 5r2 = 1.4), (εr1 = 1.2 57-2 = 1.4), (ε r 1 = 1.4 5r2 = 1.2) andempty horn antenna with L = 91.1 mm.74
751Figure 4.26 Amplitude of aperture modes versus frequency, for (εr1 = 1.4 ε,.2 = 1.4)stepped-horn antenna.
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Copyright Warning & RestrictionsThe
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VARIABLE PERMITTIVITY DIELECTRIC MA
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APPROVAL PAGEVARIABLE PERMITTIVITY
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To my parents, ..Tahsin and Güler
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TABLE OF CONTENTSChapterPage1 INTRO
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LIST OF FIGURESFigurePage2.1 Geomet
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FigureLIST OF FIGURES(Continued)Pag
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2field uniformity and this results
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4from improving the gain, dielectri
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Figure 2.1 Geometry of pyramidal a
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84Figure 2.4 Step discontinuity bet
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10section asFrom (2.4), the transve
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12and for the magnetic fieldIn the
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14where * shows complex conjugate.
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16where D is a diagonal matrix of t
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18Figure 2.6 Generalized reflection
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20aperture region and 11Ps is the m
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22where T; (x) and T: (y) are trian
Page 38 and 39: 24where Γwghnk and r wg enk are th
Page 40 and 41: tiTo determine the unknown coeffici
Page 42 and 43: 28An electric vector potential F an
Page 44 and 45: 30Using midpoint rule to evaluate i
Page 46 and 47: 32whereGreen function integrals, 4,
Page 48 and 49: 34taper and the phase distribution
Page 50 and 51: 36Even though, TE10 mode is an inci
Page 52 and 53: 38satisfy the amplitude ratio of 1/
Page 54 and 55: 40would be slight deviation from th
Page 56 and 57: 42increased to 15. Scattering matri
Page 58 and 59: 44Table 4.4 Amplitude and Phase of
Page 60 and 61: 46Figure 4.3, it is obvious that th
Page 62 and 63: 48al = 0.73A, b1 = 0.34A and apertu
Page 64 and 65: 50Table 4.7 Optimization Values of
Page 66 and 67: Figure 4.3 Input reflection coeffic
Page 68 and 69: Figure 4.5 Aperture efficiency vers
Page 70 and 71: Figure 4.7 Input reflection coeffic
Page 72 and 73: Figure 4.9 Aperture efficiency vers
Page 74 and 75: Figure 4.11 E-plane pattern versus
Page 76: 62Figure 4.13 Input reflection coef
Page 79 and 80: Figure 4.16 Aperture efficiency ver
Page 81 and 82: Figure 4.18 Amplitude of aperture m
Page 83 and 84: Figure 4.20 Amplitude of aperture m
Page 85 and 86: Figure 4.22 Input reflection coeffi
Page 87: Figure 4.24 Cross-polarization leve
Page 91 and 92: 770.8Figure 4.28 Amplitude of apert
Page 93 and 94: Figure 4.30 Amplitude of aperture e
Page 95 and 96: 81Dielectric materials of various p
Page 97 and 98: The indefinite integrals associated
Page 99 and 100: BIBLIOGRAPHY[1] P. Clarricoats, A.
Page 101 and 102: 87[26] T. Bird and S. Hay, "Mismatc
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Variable permittivity dielectric material loaded stepped-horn antenna

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