The Design of Elliptical Dual Offset Gregorian Antenna for Satellite Communication on Ka-band

Ka대역 위성통신용 타원형 이중옵셋 그레고리안 안테나 설계

  • Received : 2013.07.16
  • Accepted : 2013.11.15
  • Published : 2013.12.05


In this paper, we have designed the elliptical dual offset gregorian antenna which can use Ka band earth station antennas in the fixed-satellite service. The structure of antenna is increasing the antenna gain by decreasing blockage areas and decreasing wind effects by shortening height of the antenna. The corrugate horn antenna for this antenna has symmetric radiation patterns and low side lobe levels that can meet ITU-R envelope. The distribution of electric field on a aperture of main reflector is calculated by an ray-tracing method that use the radiation pattern of the feed horn. The final geometric of antena is decided by choosing the distribution that comply with antenna requirement. The FEKO analysed electrical performance of this antenna. The fabricated antenna has 45.0dBi(@30.0GHz)/41.7dBi(@20.2GHz), high efficiency and low side lobe level that meet ITU-R S. 580-6 envelope.



  1. 이동진, 최학근, 윤소현, 한재홍, 박재홍, 이성팔, "국내위성을 위한 경면수정 오프셋 그레고리안 안테나의 설계", 한국전자파학회논문지, 12(5), pp, 765- 776, 2001년 8월.
  2. Tom Milligan, "Designing Classical Offset Cassegrain or Gregorian Dual-Reflector Antenna from Combinations of Prescribed Geometric Parameters", IEEE Trans. Antennas and Propagation, Vol. 44, No. 3, June, 2002.
  3. C. A. Balans, Antenna Theory Analysis and Design, 2nd Edition, John Wiley & Sons 1997.
  4. 천일용, "함상용 레이더 안테나의 진동/피로 특성에 대한 연구", 석사학위 논문, 충남대학교, pp. 5-6, 2005.
  5. 전경진, "X-밴드 데이터 전송용 위성 안테나의 설계 및 해석", 석사학위 논문, 한국항공대학교, 2011.
  6. 서수덕, "커러게이트 혼 안테나로 급전된 Ku대역 캐서그레인 안테나 최적설계", 석사학위 논문, 청주대학교, 1997.
  7. ITU-R Recommendation S.580-6, "Radiation Diagrams for Use as Design Objectives for Antennas of Earth Stations Operating with Geostationary Satellites", 2003.
  8. VICTOR GALINDO-SRAE, WILLIAM A. IMBRIALE and RAJ MITTRA, "On the Theory of the Synthesis of Single and Dual Offset Shaped Reflector Antenna", IEEE Trans. Antennas and Propagation, Vol. AP-35, No. 8, August, 1987.