جبران‌سازی اثرات اختلال سطح آنتن بازتابنده با استفاده از بازتابنده فرعی شکل داده شده

نویسندگان

1 دانشگاه صنعتی امیرکبیر

2 دانشگاه امیرکبیر

چکیده

ظاهرشدن اختلال بر سطح بازتابنده اصلی سبب تغییر الگوی تشعشعی در آنتن‌های بازتابنده شده و ویژگی‌های تشعشعی این آنتن را به خصوص در فرکانس‌های بالا تخریب می‌کند. روش‌های متفاوتی برای جبران‌سازی اثرات نامطلوب اختلال سطح بازتابنده اصلی وجود دارد. در این مقاله، نشان داده می‌شود که چگونه می‌توان با استفاده از شکل‌دهی سطح بازتابنده فرعی اقدام به جبران‌سازی این اثرات نمود. بر مبنای ریاضیات وردِشی می‌توان الگوی تشعشعی آنتن بازتابنده را خطی سازی و به‌صورت ماتریسی بازنویسی کرد. با استفاده از روش تفکیک مقادیر ویژه می‌توان اقدام به حل مسئله‌ معکوس نموده و نشان داده می‌شود که برای یک ساختار دوبازتابنده‌ای، روش ارائه شده با دقت مناسبی قادر به طراحی بازتابنده فرعی مطلوب است. نتایج به‌دست آمده نشان می‌دهد که اگر دامنه‌ اختلال سطح بازتابنده اصلی کمتر از یک‌چهارم طول ‌موج باشد، الگوریتم ارائه‌شده با دقت و سرعت قادر به طراحی بازتابنده فرعی مورد نظر است.

کلیدواژه‌ها

عنوان مقاله [English]

Compensating the effects of reflector antenna surface disturbance using shaped sub-reflector

نویسندگان [English]

  • Seyed Abolfazl Haddadi 1
  • Ayaz Ghorbani 2
1
2

کلیدواژه‌ها [English]

  • Reflector Antenna
  • Physical Optics Method
  • Surface Distortions
  • Compensation
  • Shaped Sub-Reflector

مراجع

  1. S. K. Sharma, S. Rao, and L. Shafai, “Handbook of Reflector Antennas and Feed Systems,” Volume I: Theory and Design of Reflectors, Artech house, 2013##
  2. T. S. Bird, “Reflector Antennas,” Singapore: Springer Singapore, pp.1–61, 2014##
  3. Y. Rahmat-Samii and R. Haupt, “Reflector Antenna Developments: a Perspective on the Past, Present and Future,” Antennas and Propagation Magazine, IEEE, vol. 57, pp. 85–95, April 2015##
  4. D.-W. Duan and Y. Rahmat-Samii, “A Generalized Diffraction Synthesis Technique for High Performance Reflector Antennas,” Antennas and Propagation, IEEE Transactions on, vol. 43, no. 1, pp. 27–40, 1995##
  5. G. Cortes-Medellin and P. F. Goldsmith, “Analysis of Active Surface Reflector Antenna for a Large Millimeter Wave Radio Telescope,” Antennas and Propagation, IEEE Transactions on, vol. 42, no. 2, pp. 176–183, 1994##
  6. Y. Rahmat-Samii, “Effects of Deterministic Surface Distortions on Reflector Antenna Performance,” in Annales des telecommunications, vol. 40, pp. 350–360, Springer, 1985##
  7. J. Ruze, “Antenna Tolerance Theory–a Review,” in IEEE Proceedings, vol. 54, pp. 633–642, 1966##
  8. M. S. Zarghamee, “On Antenna Tolerance Theory,” Antennas and Propagation, IEEE Transactions on, vol. 15, no. 6, pp. 777–781, 1967##
  9. S. Ghobrial, “Axial Cross Polarization in Reflector Antennas with Surface Imperfections,” Antennas and Propagation, IEEE Transactions on, vol. 28, no. 5, pp. 610–616, 1980##
  10. J. Jervase, S. Ghobrial, et al., “Axial Cross Polarization in Reflector Antennas with Surface Errors of Large Correlation Diameter,” Antennas and Propagation, IEEE Transactions on, vol. 31, no. 4, pp. 662– 665, 1983##
  11. H. Ling, Y. T. Lo, and Y. Rahmat-Samii, “Reflector Sidelobe Degradation due to Random Surface Errors,”Antennas and Propagation, IEEE Transactions on, vol. 34, no. 2, pp. 164–172, 1986##
  12. P. Lian, B. Duan, W. Wang, B. Xiang, and N. Hu, “Effects of non-Uniform Surface Errors Along the Radius on Reflector’s Radiation Characteristic and Its Quality Evaluation,” Antennas and Propagation, IEEE Transactions on, vol. 63, no. 5, pp. 2312– 2316, 2015##
  13. R. P. Corkish, “A Survey of the Effects of Reflector Surface Distortions on Sidelobe Levels,” Antennas and Propagation Magazine, IEEE, vol. 32, no. 6, pp. 6–11, 1990##
  14. P. Rocca, N. Anselmi, and A. Massa, “Interval Arithmetic for Pattern Tolerance Analysis of Parabolic Reflectors,” Antennas and Propagation, IEEE Transactions on, vol. 62, no. 10, pp. 4952–4960, 2014##
  15. J.-W. Kim, B. S. Kim, S. Nam, and C. W. Lee, “Computation of the Average Power Pattern of a Reflector Antenna with Random Surface Errors and Misalignment Errors,” Antennas and Propagation, IEEE Transactions on, vol. 44, no. 7, pp. 996–999, 1996##
  16. S. Zhang, B. Duan, H. Bao, and P. Lian, “Sensitivity Analysis of Reflector Antennas and Its Application on Shaped Geo-Truss Unfurlable Antennas,” Antennas and Propagation, IEEE Transactions on, vol. 61, no. 11, pp. 5402–5407, 2013##
  17. K. Bahadori and Y. Rahmat-Samii, “Characterization of Effects of Periodic and Aperiodic Surface Distortions on Membrane Reflector Antennas,” Antennas and Propagation, IEEE Transactions on, vol. 53, no. 9, pp. 2782–2791, 2005##
  18. A. Greve and D. Morris, “Repetitive Radio Reflector Surface Deformations,” Antennas and Propagation, IEEE Transactions on, vol. 53, no.6, pp.2123–2126, 2005##
  19. W. T. Smith and R. J. Bastian, “An Approximation of the Radiation Integral for Distorted Reflector Antennas Using Surface-Error Decomposition,” Antennas and Propagation, IEEE Transactions on, vol. 45, no. 1, pp. 5–10, 1997##
  20. T.-H. Lee, R. Ruddock, and M. C. Bailey, “A Surface Distortion Analysis Applied to the Hoop/Column Deployable Mesh Reflector Antenna,” Antennas and Propagation, IEEE Transactions on, vol. 37, no. 4, pp. 452–458, 1989##
  21. Y. Zong, B. Duan, Y. Ban, W. Wang, W. Xu, C. Wang, and J. Du, “Surface Configuration Design of Cable-Network Reflectors Considering the Radiation Pattern,” Antennas and Propagation, IEEE Transactions on, vol. 62, no. 6, pp. 3163–3173, 2014##
  22. R. J. Langley and E. A. Parker, “Wave Scattering from Error-Compensating Secondary Reflectors,” IEEE Transactions on Antennas and Propagation, vol. 27, pp. 527–530, 1979##
  23. B. M. Thomas and P. Rayner, “Effect of Surface Distortions on the Crosspolarisation Performance of Paraboloidal Reflectors,” Electronics Letters, vol. 13, no. 16, pp. 478–480, 1977##
  24. K. Chan and A. Raab, “Surface-Current Analysis of Distorted Reflector Antennas,” Microwaves, Optics and Antennas, IEEE Proceedings H, vol. 128, no. 4, pp. 206–212, 1981##
  25. R. Hoferer, Y. Rahmat-Samii, et al., “Subreflector Shaping for Antenna Distortion Compensation: an Efficient Fourier-Jacobi Expansion with GO/PO Analysis,” Antennas and Propagation, IEEE Transactions on, vol. 50, no. 12, pp. 1676–1687, 2002##
  26. R. Subrahmanyan, “Photogrammetric Measurement of the Gravity Deformation in a Cassegrain Antenna,” IEEE transactions on antennas and propagation, vol. 53, no. 8, pp. 2590–2596, 2005##
  27. J. W. Baars, “The Paraboloidal Reflector Antenna in Radio Astronomy and Communication,” Springer, 2007##
  28. Y. Rahmat-Samii, “Microwave Holography of Large Reflector Antennas–Simulation Algorithms,” IEEE Transactions on antennas and Propagation, vol. 33, no. 11, pp. 1194–1203, 1985##
  29. Y. Rahmat-Samii, “Surface Diagnosis of Large Reflector Antennas Using Microwave Holographic Metrology: an Iterative Approach,” Radio Science, vol. 19, no. 5, pp. 1205–1217, 1984##
  30. J. Bennett, A. Anderson, P. McInnes, and A. Whitaker, “Microwave Holographic Metrology of Large Reflector Antennas,” IEEE Transactions on Antennas and Propagation, vol. 24, no. 3, pp. 295–303, 1976##
  31. G. Harp, R. Ackermann, et al., “Primary Beam and Dish Surface Characterization at the Allen Telescope Array by Radio Holography,” IEEE Transactions on Antennas and Propagation, vol. 59, no. 6, pp. 2004– 2021, 2011##
  32. G. R. Harp, “private communication,” 2013–2015##
  33. W. A. Imbriale, “Distortion Compensation Techniques for Large Reflector Antennas,” in Aerospace Conference, 2001, IEEE Proceedings, vol. 2, pp. 2–799, 2001##
  34. R. Paradies and M. Hertwig, “Shape Control of Adaptive Composite Reflectors,” Composites Part B: Engineering, vol.30, no.1, pp.65–78, 1999##
  35. D. Gorinevsky and T. T. Hyde, “Adaptive Membrane for Large Lightweight Space Telescopes,” in Astronomical Telescopes and Instrumentation, pp.330–338, International Society for Optics and Photonics, 2002##
  36. “Five hundred meter aperture spherical telescope,” http://www.fast.bao.ac.cn/##
  37. “The 305m telescope,” http://www.naic.edu/##
  38. R. J. Acosta, “Active Feed Array Compensation for Reflector Antenna Surface Distortions,” 1988##
  39. A. R. Cherrette, R. J. Acosta, P. T. Lam, and S.-W. Lee, “Compensation of Reflector Antenna Surface Distortion Using an Array Feed,” IEEE transactions on antennas and propagation, vol. 37, no. 8, pp. 966–978, 1989##
  40. N. Amitay and H. Zucker, “Compensation of Spherical Reflector Aberrations by Planar Array Feeds,” IEEE Transactions on Antennas and Propagation, vol. 20, no. 1, pp. 49–56, 1972##
  41. Y. Rahmat-Samii, “Array Feeds for Reflector Surface Distortion Compensation: Concepts and Implementation,” IEEE Antennas and Propagation Magazine, vol. 32, no. 4, pp. 20–26, 1990##
  42. S. Xu, Y. Rahmat-Samii, and W. A. Imbriale, “Subreflectarrays for Reflector Surface Distortion Compensation,” IEEE Transactions on Antennas and Propagation, vol. 57, no. 2, pp. 364–372, 2009##
  43. P. R. Lawson and J. L. Yen, “A Piecewise Deformable Subreflector for Compensation of Cassegrain Main Reflector Errors,” IEEE transactions on antennas and propagation, vol. 36, no. 10, pp. 1343–1350, 1988##
  44. P. Cowles and E. Parker, “Reflector Surface Error Compensation in Cassegrain Antennas,” IEEE Transactions on Antennas and Propagation, vol. 23, no. 3, pp. 323–328, 1975##
  45. B. Gonzalez-Valdes, J. A. Martinez-Lorenzo, C. Rappaport, and A. G. Pino, “A New Physical Optics Based Approach toSubreflector Shaping for Reflector Antenna Distortion Compensation,” IEEE Transactions on Antennas and Propagation, vol. 61, no. 1, pp. 467–472, 2013##
  46. A. Haddadi and A. Ghorbani, “Distorted Reflector Antennas: Analysis of Radiation Pattern and Polarization Performance,” IEEE Transactions on Antennas and Propagation, vol. 64, no. 10, pp. 4159– 4167, 2016##
  47. A. Ludwig, “The Definition of Cross Polarization,” IEEE Transactions on Antennas and Propagation, vol. 21, no. 1, pp. 116–119, 1973##
  48. B. Noble, J. W. Daniel, et al., “Applied Linear Algebra,” Prentice-Hall New Jersey, vol. 3, 1988##
  49. J. A. Martinez-Lorenzo, C. M. Rappaport, and A. G. Pino, “Reflector Antenna Distortion Determination: an Iterative-Field-Matrix Solution,” Radio Science, vol. 43, no. 4, 2008##
  50. C. Granet, “Designing Axially Symmetric Cassegrain or Gregorian Dual-Reflector Antennas from Combinations of Prescribed Geometric Parameters, Minimum Blockage Condition While Taking into Account the Phase-Center of the Feed,” Antennas and Propagation Magazine, IEEE, vol. 40, no. 3, pp. 82–89, 1998.##
  51. C. Granet, “Designing Classical Offset Cassegrain or Gregorian Dual-Reflector Antennas from Combinations of Prescribed Geometric Parameters,” IEEE Antennas and Propagation Magazine, vol. 44, no. 3, pp. 114–123, 2002.##
رادار
دوره 5، شماره 1 - شماره پیاپی 1
755
اردیبهشت 1396
صفحه 1-14

فایل ها

سابقه مقاله

  • تاریخ دریافت: 02 آبان 1395
  • تاریخ بازنگری: 03 اسفند 1401
  • تاریخ پذیرش: 28 شهریور 1397

هم رسانی

ارجاع به این مقاله

آمار