한국전자파학회논문지 (The Journal of Korean Institute of Electromagnetic Engineering and Science)

  • 제19권4호
  • /
  • Pages.451-460
  • /
  • 2008
  • /
  • 1226-3133(pISSN)
  • /
  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
권호 표지
DOI QR코드

DOI QR Code

콤팩트 안테나 테스트 레인지용 경면수정 오프셋 복반사경 시스템의 설계

Design of Offset Dual-Shaped Reflector Systems for Compact Antenna Test Range

  • 발행 : 2008.04.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

경면수정 오프셋 그레고리안 반사경 안테나는 고이득, 저 사이드로브 특성 때문에 위성 통신 시스템에 널리 사용되고 있다. 그러나 본 논문에서는 CATR(Compact Antenna Test Region)을 위한 반사경 시스템으로 설계하고 그 근접 전계 특성을 조사하였다. CATR은 시험 영역에 진폭과 위상 리플이 작고 교차 편파가 낮은 균일 평면파를 제공하여야 한다. 따라서 근접 전계를 개구면의 전력 분포, 급전 혼의 복사 패턴, 개구면과 시험 영역까지의 거리 변화에 따라 계산하여 나타냈다. 또한, 30 GHz에서 동작하는 경면수정 오프셋 복반사경을 제작하고 근접전계를 측정하였다. 그 결과, 측정치와 계산치가 비슷하게 나타났다. 이로서 본 논문에서 설계된 경면수정 오프셋 복반사경은 콤팩트 안테나 테스트 레인지로 사용될 수 있을 것으로 생각된다.

Gregorian offset dual-shaped reflector antennas have been widely used in the satellite communication systems for their high gain and low sidelobe characteristics. However, in this paper, it is designed as the CATR(Compact Antenna Test Range) reflector system, and its near-field characteristics are investigated. The CATR facility needs to provide an uniform plane wave with the minimum amplitude and phase ripple and the low cross polarization to the test region. Therefore, the reflector near-field patterns are calculated and presented with the variations of the aperture power distribution, the feed horn pattern, and the distance from the aperture to the test zone. Also, the offset dual-shaped reflector is fabricated at 30 GHz, and its near-field patterns are measured. The measured results are in good agreement with the calculated results. From theses results, we confirm that the designed offset dual-shaped reflector can be used as the reflector system for the compact antenna test range.

키워드

참고문헌

  1. L. H. Hemming, Electromagnetic Anechoic Chambers - A Fundamental Design and Specification Guide, John Wiley & Sons, Inc., 2002
  2. W. H. Emerson, "Electromagnetic wave absorbers and anechoic chambers through the years", IEEE Trans. Antennas and Prop., AP-21, no. 4, pp. 484-490, Jul. 1973
  3. E. K. Wallon, J, D. Young, "The ohio state University compact radar cross-section measurement range", IEEE Trans. Antennas and Prop., AP-32, pp. 1218-1223, no. 11, Nov. 1984
  4. R. C. Johnson, "Determination of far field antenna patterns from near field measurements", Proc. IEEE, vol. 51, no. 12, pp. 1668-1698, Dee. 1973 https://doi.org/10.1109/PROC.1973.9358
  5. C. W. Pistorius, W. D. Burnside, "An improved main reflector design for compact range reflector", IEEE Trans. Antennas and Prop., AP-35, pp. 342-347, Mar. 1987
  6. R. C. Johnson, "Some design Parameters for point source compact ranges", Proc. IEEE, vol. 61, no. 12, pp. 1668-1698, Dec. 1973
  7. W. A. Wong, "On the equivalent patabola technique to predict the performance characteristics of a Cassegrain system with an offset feed", IEEE Trans. Antennas and Prop., AP-21, no. 3, pp. 335-339, May 1973
  8. W. V. T. Rush, A. Prata, Y. Rahmat-Samii, and R. A. Shore, "Derivation and application of the equivalent paraboloid for classical offset Cassegrain and Gregorian antennas", IEEE Trans. Antennas and Prop., AP-38, pp. 1141-1149, Aug. 1990
  9. A. W, Rudge, N. A. Datia, "Offset parabolic reflector antennas: A review", Proc. IEEE, vol. 66, pp. 1592-1618, Dec. 1978
  10. Y. Mizugutch, M. Akagawa, and H. Yokoi, "Offset dual reflector antenna", in Dig. IEEE Int. Symp. Antennas Propagat., pp. 339-345, 1976
  11. H. Tannaka, M. Mizusawa, "Elimination of cross-polarization in offset dual reflector antennas", Elec. and Comm. in Japan, vol. 58-B, no. 12, pp. 71-78, 1975
  12. R. A, Shore, "A simple derivation of the basic design equation for offset dual reflector antennas with rotational symmetry and zero cross polarization", IEEE Trans. Antennas and Prop., AP-33, no. 1, pp. 114-116, Jan. 1985
  13. R. Mittra, F. Hyjajie, and V. Galindo-Isael, "Synthesis of offset dual reflector antennas trans forming a given feed illumination pattern into a specified aperture distribution", IEEE Trans. Antennas and Prop., AP-30, pp. 251-259, Mar. 1982
  14. V. Galindo-Israel, W. Imbriale, and R. Mittra, "On the theory of the synthesis of single and dual offset-shaped reflector antenna", IEEE Trans. Antennas and Prop., AP-35, pp. 887-896, Aug. 1987
  15. V. Galindo-Israel, W, Imhriale, R. Mittra, and K. Shogen, "0n the theory of the synthesis of offset dual-shaped reflectors-case examples", IEEE Trans. Antennas and Prop., AP-39, pp. 620-626, May 1991
  16. 이동진, 최학근, 윤소현, 한재흥, 박재흥, 이성팔, "국내위성을 위한 경면수정 오프셋 그레고리안 안테나의 설계", 한국전자파학회논문지, 12(5), pp. 765-776, 2001년 8월
  17. V. Galindo-Israel, S. R. Rengarajan, W. A. Imbriale, and R. Mittra, "Offset dual-shaped reflectors for dual chamber compact ranges", IEEE Trans. Antennas and Prop., AP-39, no.7, pp. 1007-1013, Jul. 1991
  18. Y. T. Lo, S. W. Lee, Antenna Handbook, ch. 15, New York, Van Nostrand Reinhold Company Inc., 1988