Suppression of Sidelobes Level for Parabolic Reflector Antennas

Document Type : Original Article

Authors

1 M.Sc., Tarbiat Dabir Shahid Rajaei University, Tehran, Iran

2 Assistant Professor, Tarbiat Dabir Shahid Rajaei University, Tehran, Iran

Abstract

In recent years, different researches have been done in the context of the sidelobe level suppression for the military and civilian porposes. In these studies, various methods have been considered to reduce the sidelobe level, such as: edging the antenna in different cases, surface impedance tuning, placing metal pills on the reflector surface, placing resonant and non-resonant elements on the edges around the antenna. In this article, the effect of focal length and diameter of parabolic reflector antenna on the suppression of the sidelobe level has been investigated and obtained by optimization without the use of complex and costly structures. Depending on the need for the maximum gain, the small size or the minimum sidelobe level, the antenna can be designed. According to the purpose of the minimum sidelobe level, the proposed antenna has a working frequency of 12.5GHz, gain of 39.07dBi, 4.967λ (11.9 Cm) depth, 39.24λ (94.11 Cm) diameter, 19.375λ (46.47 Cm) focal length, -44.91dB and -43.5dB Sidelobe level in E and H-Plane respectively. This antenna has sidelobe levels of -30.76 and -47.15 at frequencies of 6.5 and 18.5GHz.

Keywords

References

[1]   C. A. Balanis, "Antenna Theory analysis and design", John Wiley & Sons, fourth edition, 2016.
[2] P. A. Venkatachalam, N. Gunasekaran and K. Raghavan, "An offset reflector antenna with low sidelobes", IEEE Transactions on Antennas and Propagation AP-33, No.6, June.1985.
[3]  H. Chou and H. Ho, "Local Area Radiation Sidelobe Suppression of Reflector Antennas by Embedding Periodic Metallic Elements Along the Edge Boundary," in IEEE Transactions on Antennas and Propagation, vol. 65, no. 10, pp. 5611-5616, Oct. 2017.
[4]   S. H. Sedighi, M. Salimi, "Smart Antenna Design with Arbitrary Tilit for Wireless Communication." Applied Electromagnetics, 2 (3), 51-57, 1394. (In Persion)
[5]  M. Fertokzadeh, S. H. Mohseni Armaki, "Millimeter Wave Near-field Focusing Cassegrain Reflector Antennas." Applied Electromagnetics, 2 (3), 41-49. 1394 (In Persion)
 [6] S. Ebrahimi, S. H. Mohseni Armaki, A. Erfanian, "Design and Implementation of Cassegrain Antenna with 37dB Gain in Millimeter Wave Spectrum." Applied Electromagnetics, 2 (3), 11-20, 1394. (In Persion)
[7]  R. A. Shore and A. D. Yaghjian, "Application of incremental length diffraction coefficients to calculate the pattern effects of the rim and surface cracks of a reflector antenna," in IEEE Transaction on Antennas and Propagation, vol. 41, no. 1, pp. 1-11, Jan 1993.
 [8]  G. L. James, and V. Kerdemelidis. "Reflector antenna radiation pattern analysis by equivalent edge currents." IEEE Transactions on Antennas and Propagation, 2 19-24, 1973.
[9]  W. D. Burnside, et al. "Curved edge modification of compact range reflector.", IEEE Transactions on Antennas and Propagation, 35.2, 176-182, 1987.
[10] Chou, HsiTseng, ShihChung Tuan, and YuTing Hsiao. "Hybrid GB and PO analysis of electromagnetic radiation/scattering from large reflector antennas with tapered impedance surfaces." Microwave and optical technology letters 42.1, 34-37, 2004.
[11], R. L. Haupt, "Low sidelobe resistive reflector antenna." U.S. Patent No. 5,134,423. 28 Jul. 1992.
[12] S. V. Nechitaylo, A. Z. Sazonov, and O. I. Sukharevsky. "Calculation of electromagnetic field in near field zone of reflector antenna with edge radar absorbing coating." Mathematical Methods in Electromagnetic Theory, 2002. MMET'02. 2002 International Conference on. Vol. 2. IEEE, 2002.
[13] D. Jacavanco, "Reflector antenna having sidelobe suppression elements." U.S. Patent No. 4,631,547. 23 Dec. 1986.
[14] H. Chou, "Radiation Sidelobe Reduction and Focus Properties of Reflector Antennas by Grating the Aperture Field via Nonperiodic Fresnel-Zone Plate Lens," in IEEE Transactions on Antennas and Propagation, vol. 66, no. 5, pp. 2634-2639, May 2018.
[15] S. Tuan, C. Sun, H. Ho and H. Chou, "On the sidelobe reduction of reflector antenna's radiation by using non-periodic grating apertures," 2016 Asia-Pacific International Symposium on Electromagnetic Compatibility (APEMC), Shenzhen, pp. 132-134, 2016.
[16] J. R. de Lasson, C. Cappellin, R. Jorgensen, L. Datashvili and J. Angevain, "Advanced techniques for grating lobe reduction for large deployable mesh reflector antennas," 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, pp. 993-994, 2017.
[17] Bo Sun, Jinghui Qiu, Caitian Yang and Lingling Zhong, "Effect of design parameters on sidelobe level of short-focus parabolic reflector antenna," 2008 Asia-Pacific Symposium on Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, Singapore, pp. 851-854, 2008.
[18] A. A. Kishk and L. Shafai, "Small reflector antenna with low sidelobes," in IEEE Transactions on Antennas and Propagation, vol. 51, no. 10, pp. 2907-2912, Oct. 2003.
[19] Electromagnetic Simulation Software, Altair Feko
Radar
Volume 8, Issue 2 - Serial Number 24
February 2021
Pages 89-96

Files

History

  • Receive Date: 17 August 2020
  • Revise Date: 20 January 2021
  • Accept Date: 21 February 2021

Share

How to cite

Statistics