پایان نامه بهبود آنتن آرایه ای موج رونده موج بر شکا ف دار برای کاهش سطح لوب کناری و پلاریزاسیون متقاطع

فهرست:

فصل1.مقدمه                                                                                                                          2

فصل2.تئوری آنتن و آرایه ها                                                                                                       6

2-1. پارامترهای مهم آنتن...................................................................................................................................... 7

2-1-1. پهنای باند فرکانسی............................................................................................................................. 7

2-1-2. الگوی تشعشعی.................................................................................................................................... 8

2-1-3. جهت دهندگی ، بهره و پلاریزاسیون................................................................................................... 9

2-2. آنتن های آرایه ای........................................................................................................................................ 14

2-2-1. آرایه خطی یکنواخت......................................................................................................................... 15

2-2-2. توزیع جریان تیلور............................................................................................................................. 18

2-3. خلاصه.......................................................................................................................................................... 21

فصل3.معرفی آنتن های آرایه ای موجبر شکاف دار                                                                         22

3-1. معرفی انواع شکاف های تشعشع کننده بر روی بدنه موجبر....................................................................... 24

3-2. روش های محاسبه مشخصه های شکاف..................................................................................................... 28

3-2-1. فرمول های Stevenson.................................................................................................................... 29

3-2-2. تحلیل مدل پراکندگی...................................................................................................................... 30

3-2-3. شکاف اریب روی دیواره کناری موجبر.............................................................................................. 32

3-3. طراحی آرایه های شکاف دار موجبری......................................................................................................... 33

3-3-1. طراحی آرایه موجبر شکاف دار از نوع رزونانسی................................................................................ 36

3-3-2. طراحی آرایه موجبری شکاف دار از نوع موج رونده........................................................................... 48

3-4. خلاصه.......................................................................................................................................................... 55

فصل4.آرایه موج رونده موجبر شکاف دار با شکاف اریب روی بدنه باریک موجبر                                     57

4-1. مقدمه........................................................................................................................................................... 57

4-2. روش طراحی آرایه موج رونده با شکاف اریب روی بدنه باریک موجبر....................................................... 58

4-2-1. برنامه متلب برای محاسبه توزیع جریان خطی تیلور:....................................................................... 58

4-2-2. بدست آوردن فاصله بین المان ها و بررسی تاثیرات آن بر پهنای باند و پترن................................. 60

4-2-3. بدست آوردن دامنه تحریک و رسانایی شکاف ها............................................................................. 65

4-2-4. تعیین مشخصات شکاف ها................................................................................................................ 68

4-2-5. نتایج شبیه سازی آرایه موجرونده طراحی شده با شکاف اریب........................................................ 74

4-3. خلاصه.......................................................................................................................................................... 82

فصل5.شکاف های چرخش نیافته روی بدنه باریک موجبر                                                                 84

5-1. مقدمه........................................................................................................................................................... 84

5-2. نحوه تحریک شکاف های چرخش نیافته روی بدنه باریک موجبر............................................................. 85

5-3. ساخار پیشنهاد شده برای کاهش پلاریزاسیون متقاطع............................................................................... 87

5-4. بدست آوردن رسانایی ساختار پیشنهاد شده.............................................................................................. 88

5-5. آرایه موج رونده طراحی شده با ساختار پیشنهاد شده و نتایج شبیه سازی............................................... 89

5-5-1. پهنای باند......................................................................................................................................... 91

5-5-2. الگوهای تشعشعی.............................................................................................................................. 91

5-6. آنالیز حساسیت ساختار پیشنهادی.............................................................................................................. 97

فصل6.نتیجه گیری و پیشنهادهایی برای کارهای آتی                                                                    102

6-1. نتیجه گیری............................................................................................................................................... 102

6-2. پیشنهاد های کارهای آینده

منبع:

[1]       John L. Volakis, Antenna Engineering Handbook, fourth ed, BAE Systems, Inc, Aug 2007,

ch. 9.

[2]       Paul Wade “Microwave Antenna Handbook”Online ex-NIBWT,2000,2001,ch.7.

[3]       D. Dudley.,  Jr:“An iris-excited slot radiator in the narrow wall of rectangular waveguide”, IRE TRANS. ON ANTENNAS AND PROPAGATION, Vol. No .9, Issue 4, July 1961, PP. 361-364.

[4]       S. Hashemi-Yeganeh, R.S. Elliott: “Analysis of Untilted Edge Slots Excited by Tilted Wires", IEEE TRANS. ON  ANTENNAS AND PROPAGATION, Vol. 38, Nov. 1990. PP. 1737-1745.

[5]       J. Hirokawa and P-S. Kildal, “ Excitation of an Untitled Narrow-Wall slot in a Rectangular Wavegide by Using Etched Strips on a Dielectric plate,” IEEE Trans. ON Antennas and propag. AP-45,1997, PP.1032-1037.

[6]       W. Wang, S. Zhong, J. Jin and X. Liang, “An Untitled Edge-Slotted Waveguide Antenna

Array with very Low Cross-Polarization,” Microwave and Optical Technology Letter,

Vol.44, No.1, January 2005, PP.91-93.

[7]       A.R. Mallahzadeh and S. M. Alinezhad, “ An Ultralow Cross-Polarization Slotted

Wavegude Chebyshev Array Antenna,” Proceeding of the 5th European Conference on

Antenna and Propagation.(EuCAP), April 2011.pp.1953-1956.

[8]       D. Dogan and O.A. Civi, “A Novel Edge  Wall Waveguide Slot Antenna with Low Cross Polarization”, IEEE Conference International Symposium on Phased Array system and Technology (ARRAY), 2010. PP. 453-456.

[9]       W.Wang ; J. Jin , J-G.Lu,S-S.Zhong , “Waveguide Slotted Antenna Array with Broad Band , Dual-Polarization and Low Cross-Polarization for X-Band SAR Application”, IEEE Intrnational Radar conference, 2005. PP. 653-656.

[10]     A.R. Mallahzadeh and S.M. Alinezhad, “ Untitled Slot Array Antenna at the Narrow wall the waveguide using double ridge,” Int J RF and Microwave CAE. Oct 2010, PP.699-710.

[11]     Robert J. Mailloux, Phased Array Antenna Handbook, Artech House, second  

edition, 2005.

[12]     D. T. Paris and F. K. Hurd, "Basic Electromagnetic Theory", McGraw-Hill Book Co., New York, 1969.

[13]     Constantine A. Balanis, "Antenna Theory Analysis and Design", 2005, by JohnWiley & Sons, INC

[14]     Wollf, E. A., Antenna analysis (New york : John wiley and sons, Inc.,1966)

[15]     R. S. Elliott, Antenna Theory and Design, Chap. 8 (Englewood Cliffs, NJ: Prentice-Hall, Inc.,1981)

[16]     T. T. Taylor, "Design of line-source antennas for narrow beam-width and low side lobe,” IRE Trans on antenna and propagation,vol. AP-3, pp. 16-28; January, 1955.

[17]     T. T. Taylor, "Design of Circular Apertures for Narrow Beamwidth and Low Sidelobes,”

IRE Trans on antenna and propagation, January 1960.

[18]     H.G. Booker, “Slot Aerials and Their Relation to Complementary Wire Aerials,”

      J. IEE, 1946, pp. 620-626

[19]     R. E. Collin and F. J. Zucker (eds.), “Antenna Theory”, Part I, Chap. 14 ,New York:

McGraw-Hill,1969.

[20]     A. F. Stevenson, “ Theory of slots in rectangular waveguide”, Journal of Applied physics,Vol.19, pp.24-38,1948.

[21]     L. Lewin, Advanced Theory of Waveguides (London: Iliffe & Sons, Ltd., 1951): 106–

114.

[22]     N. H. Frank and L. J. Chu, MIT Rad. Lab. Rep. 43-6 and 43-7, 1942.

[23]     B. N. DAS, J.Ramakrishna and B. K. Sarap, “Resonant Conductance of Inclined slot in the narrow wall of  a rectangular waveguide”, IEEE Trans on Antenna and Propagation, Vol.AP-32, No. 7,pp.759-761,July 1984.

[24]     R.C. Johnson and H. Jasik“ Antenna Engineering Handbook” 2nd ed., New York: McGraw-Hill,1984.

[25]     P. Hsu and S. H. Chen, “Resonant Length of Edge slots”, International Symposium Digest: Antenna and Propagation, Vol.1,pp.364-367,1987.

[26]     P. Hsu and S. H. Chen, “Admittance and Resonant Length of Inclined slots in the Narrow Wall of a Rectangular Waveguide”,IEEE Trans on Antenna and Propagation, Vol.37, No.1, pp. 45-49, Jan. 1989.

[27]     A.A. Oliner, “The Impedance Properties of Narrow radiating slots in the Broade face of

Rectangulr waveguide”, IRE Trans.On Antenna and Propagation. Vol. Ap.5,pp.4-20, Jan.

              1957.

[28]     C.G. Jan, P.Hsu and R.B.Wu, “Corner Effect on Mutual Impedance Between Edge Slots”, IEEE trans. On Antenna and Propagation, Vol.41, No.4,pp.488-492.Apr.1993.

[29]     C.G. Jan, P.Hsu and R.B.Wu, “Moment Method Analyisis of Side Wall Inclined Slotsin Rectangular Waveguide”, IEEE trans. On Antenna and Propagation, Vol.39, No.1 ,pp.68-73.Jan.1991.

[30]     C.G. Jan, P.Hsu and R.B.Wu, “Analysis of  Edge Slots in Rectangular Waveguide with Finite Waveguide Thickness”, IEEE trans. On Antenna and Propagation, Vol.44, No.8,pp.1120-1126.Aug.1996.

[31]     V.V.S. Parkash, N. Blakrishnan and S. Christopher, “Theoretical studies on the effect of geometry on the Radiating Slot”13th annual review of progress in applied computational electromagnetic,ACE,97,Montery,CA,USA,pp.201-207,1997.

[32]     K. Forooraghi and P-s. Kildal, “Radiation Patternof a Slotted Waveguide Array Radiating

              Between Finite height Baffles in term of Spectrum of two dimensionalSoloution”IEE

              Proc.H Microwave antenna and Propagation,Vol.140,No.1, pp. 52-58,Feb 1993.

[33]     K. Forooraghi and P-s. Kildal and S.R.Rengarajan “Admittance of an Isolate Waveguide-

              Fed Slot Radiating Between Baffles Using a Spectrum of two Dimensional solotion”IEEE

              Trans. On Antenna and Propagation ,Vol.41,No.4,pp.422-428,Apr.1993.

[34]     J.Hirokawa, G. Wettergern, M. Ando and N. Goto, “Calculation of external Aperture Admittance and Radiation Pattern of a Narrow Slot Cut Across an Edge of a Sectoral Cylinder in Term of a Spectrum of two Dimensional Solution”IEE Trans. On Antenna and Propagation, Vol.42,pp.1243-1249,Sept.1994.

[35]     W. H. Watson, “Resonant Slots,” J. IEE (London), part IIIA, vol. 93 (1946): 747–

777.

[36]     R. J. Stegen, “Longitudinal Shunt Slot Characteristics,” Hughes Aircraft Co. Tech.

Mem. 261, Culver City, CA, November 1951.

[37]     I. Kaminow and R. J. Stegen, “Waveguide Slot Array Design,” Hughes Aircraft Co.

 Tech. Mem. 348, Culver City, CA, 1954.

[38]     J. C. Coetzee, J. Joabert, and W. L. Tan, “Frequency Performance Enhancement of

       Resonant Slotted Waveguide Arrays through the use of wideband Radiators or Sub-

Arraying”, Microwave and optical technology Letters/ Vol. 22, No. 1, July 5 1999.

[39]     ANTENNA ENGINEERING HANDBOOK, Downloaded from Digital Engineering   

      Library @ McGraw-Hill (www.digitalengineeringlibrary.com)

[40]     H. Jasik, Antenna Engineering Handbook, McGraw-Hill, 1961, Chapter 9.

[41]     S.R. Rengarian, L.G.Jossefsson and R.S.Elliot, “waveguide – fed slot antenna and arrays :

A review”, Electromagnetics,Vol. 19 , No. 1, 1999, PP. 3-22.

[42]     A.J. Sangster and A.H.L. MacCroick, “ Theoretical design/synthesis of slotted waveguide arrays”, IEE proceedings, Vol. 136, Pt. H, No. 1, February 1989, PP. 39-46.

[43]     R.S. Elliot, “ The Design of Slot Arrays Including Internal Mutual Coupling”, IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, Vol. AP-34, No. 9, SEPTEMBER 1986, PP. 1149-1154.

[44]     M. Lqkke and A. Qstergaard, “ Accurate Synthesis of linear Non-Resonant Narrow Wall Inclined Slotted Wavegude Arrays” IET Microw. Antenna Prpopag., 2011,vol.5,Iss.13, PP. 1646-1653.

[45]     L.A. Kurtz and J.S.Yee, “ Second order beem of two dimension slot arrays”,IRE TRANS. ON ANTENNAS AND PROPAGATION VOL. AP-5, October 1957, PP. 356-363.