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

  • 제28권6호
  • /
  • Pages.478-486
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  • 2017
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  • 1226-3133(pISSN)
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  • 2288-226X(eISSN)
한국전자파학회 (The Korean Institute of Electromagnetic Engineering and Science)
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광대역 컨포멀 위상 배열 안테나의 빔형성 열화 보상 알고리즘

Compensation Algorithm of Beamforming Error for Wideband Conformal Array Antenna

  • Yoon, Ho-Joon (Department of Electronic Convergence Engineering, Kwangwoon University) ;
  • Lee, Kang-In (Department of Electronic Convergence Engineering, Kwangwoon University) ;
  • Nam, Sang-Wook (Department of Electrical and Computer Engineering, Seoul National University) ;
  • Chung, Young-Seek (Department of Electronic Convergence Engineering, Kwangwoon University) ;
  • Yoon, Young-Joong (School of Electrical & Electronic Engineering, Yonsei University)
  • 투고 : 2017.04.04
  • 심사 : 2017.05.24
  • 발행 : 2017.06.30
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초록

본 논문은 광대역 컨포멀 위상배열 안테나 빔형성 시 발생하는 조향오차를 보상하고, 목적하는 빔형성을 위한 알고리즘을 제안한다. 광대역 빔 조향을 위하여 본 연구에서는 TTD(True Time Delay) 방식을 채택하였으며, 긴 시간의 지연을 위하여 기판 회로상에 구현을 하였다. 빔 조향 오차의 원인은 배열 안테나 소자간의 상호간섭, 지연회로 기판의 분산 특성 및 디지털 제어에 의한 quantization 오차 등이 있다. 본 논문에서 TTD 회로의 분산 및 quantization 오차는 절대적인 지연시간보다 배열소자간의 상대적인 지연시간 차이를 최적화 하는 방향으로 분산 및 quantization 오차의 영향을 최소화하였다. 제안된 조향오차 보상기법을 2~4 GHz 대역의 컨포멀 위상배열 구조에 적용하여 측정값과 비교하여 그 타당성을 검증하였다.

In this paper, we propose an algorithm for the wideband beamforming in a conformal phased array antenna by compensating the errors. For the wideband beamforming, we used the True Time Delay(TTD), which was fabricated on the RF circuit board to obtain long delay lines. Beamforming errors in the conformal array antenna are the mutual coupling between the array elements, the dispersive error in the TTD circuit, and the quantization error by the digital control. We apply the compensation algorithm to the conformal phased array antenna of wideband 2~4 GHz, and verify the usefulness by comparing the results with the experiment results.

키워드

참고문헌

  1. L. Josefsson, P. Persson, Conformal Array Antenna Theory and Design, vol. 29, John Wiley & Sons, 2006.
  2. A. W. Rudge, The Handbook of Antenna Design, vol. 16, IET, 1983.
  3. Robert J. Mailloux, Phased Array Antenna Handbook, vol. 2, Boston: Artech House, 2005.
  4. R. C. Hansen, et al., "Conformal antenna array design handbook", NASA STI/Recon Technical Report N, vol. 82, p. 21483, 1981.
  5. K. M. Tsui, S. C. Chan, "Pattern synthesis of narrowband conformal arrays using iterative second-order cone programming", IEEE Transactions on Antennas and Propagation, vol. 58, no. 6, pp. 1959-1970, 2010. https://doi.org/10.1109/TAP.2010.2046865
  6. R. Karimzadeh, et al. "Conformal array pattern synthesis using the weighted alternating reverse projection method considering mutual coupling and embedded-element pattern effects", IET Microwaves, Antennas & Propagation, vol. 6, no. 6, pp. 621-626, 2012. https://doi.org/10.1049/iet-map.2011.0307
  7. Hans, Steyskal, Jeffrey S. Herd, "Mutual coupling compensation in small array antennas", IEEE Transactions on Antennas and Propagation, vol. 38, no. 12, pp. 1971- 1975, 1990. https://doi.org/10.1109/8.60990
  8. Santana, Burintramart, Methods for Direction of Arrival Estimation using a Single Snapshot of the Data, Syracuse University, 2009.
  9. Matt, Longbrake, "True time-delay beamsteering for radar", Aerospace and Electronics Conference(NAECON), 2012 IEEE National, 2012.
  10. D. Carosi, et al. "Delay control in wide band front-end components for multi-role/multi-domain phased-array systems", Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International, 2011.
  11. M. K. Cho, et al., "CMOS-based bi-directional T/R chipsets for phased array antenna", Microwave Symposium Digest(MTT), 2012 IEEE MTT-S International, 2012.
  12. Regis Guinvarc'H, Serhir, Mohammed, Fabrice Boust, and Nicolas Ribiere-Tharaud, "A wideband omnidirectional conformal array for passive radar", Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE, 2014.
  13. Y. M. Madany, "The analysis of wideband conformal microstrip array antenna with cosecant-squared beam shaping", 2006 IEEE Conference on Radar, 2006.