Design of Shaped Offset Gregorian Antennas for Domestic Satellites

국내위성을 위한 경면수정 오프셋 그레고리안 안테나의 설계

  • Published : 2001.08.01

Abstract

In this paper, a shaped offset gregorian antenna is electrically designed for Ku band FSS antennas of the domestic communications and broadcasting satellite which will be launched in the near future. For this, a design procedure for shaped offset gregorian antennas is described in detail, and a satellite antenna is designed by using the described design procedure. The radiation characteristics of the designed antenna are evaluated and compared with the design goals. The designed antenna is found to have 1.2$^{\circ}C$ beamwidth, 38.57 dBi EOC gain, and 43.19 dBi gain at Tx frequency 12.25 GHz and 1.08$^{\circ}$ beamwidth, 38.12 dBi EOC gain, and 44.11 dBi gain at Rx frequency 14.0 GHz. And also, side lobe levels and cross-polarization levels are less than -30 dB and -33 dB, respectively. From these results the designed antenna is found to be able to use for the domestic satellite FSS antennas.

Keywords

References

  1. IEEE Trans. Antenna Propagat. v.AP-28 Shaped reflector antenna analysis using the Jacobi-Bessel series Y. Rahmat-Samii;V. Galindo-Israel
  2. IEE Conference Publication no.436 Cross Polar Performance Characteristics of Shaped Grided Reflector J. D. Mahony;S. S. Chana;L. Hilliard;M. S. Jessup
  3. ITU-R Recommendations : Fixed-Satellite Service ITU
  4. 한국전자파학회논문지 v.10 no.2 오프셋 반사경 안테나의 빔 스캔 특성 해석 최학근
  5. 방송위성기술 일본방송협회
  6. 한국전자통신연구원 최종보고서 통신방송위성용 반사판 안테나 RF 설계 및 해석 최학근
  7. 한국통신학회논문지 v.18 no.1 Ku 밴드 VSAT 반사경 안테나의 설계 및 복사특성해석 최학근;이돈신;최학윤
  8. IEEE Trans. Antenna Propagat. v.AP-27 An efficient technique for the computation of vector secondary pattern of offset paraboloid reflectors R. Mittra;Y. Rahmat-Samii;V. Galindo-Israel;R. Norman
  9. Advanced Technology in Satellite Communication Antennas : Electrical and Mechanical Design T. Kitsuregawa
  10. IEEE Trans. Antenna Propagat. v.AP-38 Derivation and application of the equivalent paraboloid for classical offset cassegrain and gregorian antennas W. V. T. Rusch;A. Prata, JR.;Y. Rahmat-Samii;R. A. Shore
  11. 대한전자공학회 논문지 v.26 no.2 국내 방송위성을 위한 오프셋 파라볼라 안테나의 설계에 관한 연구 최학근;박정기;박성룡
  12. 한국통신학회지 v.14 no.7 무궁화 1, 2, 3호 위성의 개요 및 활용계획 황보한;장상구
  13. IEEE Trans. Antenna Propagat. v.AP-27 An efficient technique for the computation of vector secondary pattern of offset paraboloid reflectors R. Mittra;Y. Rahmat-Samii;V. Galindo-Israel;R. Norman
  14. IEEE Trans. Antenna Propagat. v.AP-30 Synthesis of offset dual reflector antennas transforming a given feed illumination pattern into a specified aperture distribution R. Mittra;F. Hyjajie;V. Galindo-Israel
  15. 대한전자공학회 논문지 v.28 no.9 Zernike 다항식을 이용한 오프셋 복반사경 안테나의 해석 최학근