Variable permittivity dielectric material loaded stepped-horn antenna

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62Figure 4.13 Input reflection coefficient versus frequency of the stepped-horn antennas for(εr1 = 1 . 0 εrg = 1 . 0), (εri = 1.2 5r2 = 1 . 2), (εr1 = 1 . 0 5r2 = 1 . 2), (εn = 1- 2 εrg =1.0), and empty horn antenna with length L = 80.2 mm.
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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
Page 20 and 21:
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
Page 26 and 27: 12and for the magnetic fieldIn the
Page 28 and 29: 14where * shows complex conjugate.
Page 30 and 31: 16where D is a diagonal matrix of t
Page 32 and 33: 18Figure 2.6 Generalized reflection
Page 34 and 35: 20aperture region and 11Ps is the m
Page 36 and 37: 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 78 and 79: Figure 4.15 Cross-polarization leve
Page 80 and 81: Figure 4.17 Co- and Cross-polarizat
Page 82 and 83: Figure 4.19 Amplitude of aperture e
Page 84 and 85: Figure 4.21 Amplitude of aperture e
Page 86 and 87: Figure 4.23 Gain versus frequency o
Page 88 and 89: Figure 4.25 Aperture efficiency ver
Page 90 and 91: Figure 4.27 Amplitude of aperture m
Page 92 and 93: 780.8Figure 4.29 Amplitude of apert
Page 94 and 95: CHAPTER 5CONCLUSIONS AND FUTURE WOR
Page 96 and 97: APPENDIXTAYLOR EXPANSION OF GREEN F
Page 98 and 99: 84The definite integral is obtained
Page 100 and 101: 86[13] H. Patzelt and F. Arndt, "Do
Page 102: 88[41] R. C. Johnson and H. Jasik,
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Variable permittivity dielectric material loaded stepped-horn antenna

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