Design of W-Band Cassegrain Antenna for Beam Steering

빔 조향을 위한 W-대역 카세그레인 안테나 설계

  • Published : 2016.04.30


In this paper, for the mechanical beam steering of the Cassegrain antenna, the steering performances of the main reflector tilting method are characterized, and the Cassegrain antenna for the antenna rotating method is designed and its performances are measured. In the Cassegrain antenna operating at W-band, the changes of characteristics due to changes in the sizes of the main/sub-reflectors and other structural changes are analyzed to obtain the structural variables satisfying the performance goal. The manufactured antenna in W-band shows the measured gain of 42.08 dBi, 3 dB beamwidth of $1.32^{\circ}$, $1.14^{\circ}$ and the return loss($S_{11}$) of -23.58 dB at the center frequency of 94 GHz.


Cassegrain Antenna;Main Reflector Tilting;Antenna Steering;W-Band


  1. Zhitao Chen, Junwei Liu,, and Lin Li, "Design of scalable beam steering system of phased array radar", Radar Conference, 2011 IEEE, pp. 1153-1156, Oct 2011.
  2. M. Zimmerman, S. W. Lee, B. Houshmand, and R. Acosta, "A comparison of reflector antenna design for wideangle scanning", NASA Technical Memorandum 101459, Feb 1989.
  3. Kurt Wiener, Paul Kennedy, Daniel Otlowski, and Brandon Rathbum, "Using a two plane spine balance instrument to balance a satellite rotor about its own bearings", 67th Annual Conference of Society of Allied Weight Engineers, Inc. Seattle, Washington, pp. 17-21, May 2008.
  4. 정영배, 엄순영, "새로운 빔 조향 방식을 갖는 반사판 기반의 이동형 위성 통신 안테나", 한국전자파학회논문지, 20(4), pp. 344-350, 2009년.
  5. Hongfu Meng, Wenbin Dou, "Design of diffractive Cassegrain antenna at W band", IEEE CIE International Conference, 2, pp. 1176-1178, 2011.
  6. C. A. Balanis, Antenna Theory Analysis and Design, Wiley, 2005.
  7. P. A. Jensen, "Cassegrain systems", in A. W. Rudge, K. Milne, A. D. Olver, P. Knight (eds.), The Handbook of Antenna Design, Volume 1, London, Peter Peregrinus, 1982, Section 3.2.
  8. C. Granet, "Designing axially symmetric Cassegrain or Gregorian dual-reflector antennas from combinations of prescribed geometric parameters," IEEE Antennas and Propagation Magazine, vol. 40, no. 2, pp. 76-82, Apr. 1998.
  9. C. Granet, "Designing axially symmetric Cassegrain or gregorian dual-reflector antennas from combinations of prescribed geometric parameters, Part 2: Minimum blockage condition while taking into account the phase-center of the feed," IEEE Antennas and Propagation Magazine, vol. 40, no. 3, pp. 82-85, Jun. 1998.
  10. 정명숙, 엄원영, 김완주, "표적감지 신관센서용 W대역 카세그레인 안테나", 한국군사과학기술학회지, 9, pp. 101-108, 2006년.
  11. Enrique Nova, Daniel Rodrigo, Jordi Romeu, and Lluis Jofre, "94 GHz Cassegrain reflector antenna performance characterization", Antennas and Propagation(EUCAP), 2012 6th European Conference on, Prague, Czech, pp. 3442-3445, Mar. 2012.


Supported by : 한화탈레스