volume | PIER Journals

Abstract

A double-layer frequency selective surface (FSS) with dual rings is used as a reflector in the design of an Archimedean spiral antenna (ASA) with low radar cross section (RCS) and uni-directional characteristics. The proposed FSS presents a stopband in the range of 2 GHz to 4.7 GHz, which is applied to ASA to form a unidirectional radiation pattern with front to back ratio (FBR) values larger than 10 dB in the stopband, and the maximum FBR value is up to 25.26 dB. Compared with the reference antenna with the same-size metallic ground, the proposed FSS reduces the RCS about 2.5-38 dB in the frequency ranges of 4.8-30 GHz. And the FSS antenna also exhibits better axial ratio characteristics in the frequency range of 2.8-8.1 GHz. The composite structure is compact, with a total height of 0.18 wavelength at the lowest analysis frequency of 2 GHz. Measured results indicate that the proposed antenna reproduces the inherent wideband of the original ASA from 1.6 GHz to 8.1 GHz. Meanwhile, the gain of the ASA is increased by 3 dBi. Full-wave simulations and measurements prove that the novel FSS reflector can be employed to replace a metallic ground which realises a uni-directional ASA with broadband low RCS, high gain and good circular polarization (CP) performance.

1. Jia, Y. T., Y. Liu, S. X. Gong, W. B. Zhang, and G. S. Liao, "A low-RCS and high-gain circularly polarized antenna with a low profile," IEEE Antennas Wireless Propag. Lett., Vol. 16, 2477-2480, 2017.
doi:10.1109/LAWP.2017.2725380 Google Scholar

2. Stutzman, W. L. and G. A. Thiele, Antennas Theory and Design, Wiley, 1981.

3. Nakano, H., S. Sasaki, H. Oyanagi, and J. Yamauchi, "Cavity-backed archimedean spiral antenna with strip absorber," IET Microw. Antennas Propag., Vol. 2, No. 7, 725-730, Oct. 2008.
doi:10.1049/iet-map:20080022 Google Scholar

4. Bell, J. and M. Iskander, "A low-profile archimedean spiral antenna using an EBG ground plane," IEEE Antennas Wireless Propag. Lett., Vol. 3, 223-226, 2004.
doi:10.1109/LAWP.2004.835753 Google Scholar

5. Amiri, M. A., C. A. Balanis, and C. R. Birtcher, "Gain and bandwidth enhancement of a spiral antenna using a circularly symmetric HIS," IEEE Antennas Wireless Propag. Lett., Vol. 16, 1080-1083, 2017.
doi:10.1109/LAWP.2016.2622222 Google Scholar

6. Mohamad, S., R. Cahill, and V. Fusco, "Selective high impedance surface active region loading of Archimedean spiral antenna," IEEE Antennas Wireless Propag. Lett., Vol. 13, 810-813, 2014.
doi:10.1109/LAWP.2014.2314860 Google Scholar

7. Mohamad, S., R. Cahill, and V. Fusco, "Performance of archimedean spiral antenna backed by FSS reflector," Electron. Lett., Vol. 51, No. 1, 14-16, 2015.
doi:10.1049/el.2014.3693 Google Scholar

8. Peng, L., J. Y. Xie, K. Sun, X. Jiang, and S. M. Li, "Resonance-based reflector and its application in unidirectional antenna with low-profile and broadband characteristics for wireless applications," Sensors, Vol. 16, No. 12, 2092-1-2092-14, 2016.
doi:10.3390/s16122092 Google Scholar

9. Peng, L., J. Y. Xie, X. F. Li, and X. Jiang, "Front to back ratio bandwidth enhancement of resonance based reflector antenna by using a ring-shape director and its time-domain analysis," IEEE Access, Vol. 5, 15318-15325, Jul. 2017. Google Scholar

10. Liu, T., X. Y. Cao, J. Gao, Q. R. Zheng, W. Q. Li, and H. H. Yang, "RCS reduction of waveguide slot antenna with metamaterial absorber," IEEE Trans. Antennas Propag., Vol. 61, No. 3, 1479-1484, Mar. 2013.
doi:10.1109/TAP.2012.2231922 Google Scholar

11. Zhao, Y., X. Y. Cao, J. Gao, X. Yao, and X. Liu, "A low-RCS and high-gain slot antenna using broadband metasurface," IEEE Antennas Wireless Propag. Lett., Vol. 15, 290-293, 2016.
doi:10.1109/LAWP.2015.2442257 Google Scholar

12. Liu, Y., Y. W. Hao, H. Wang, K. Li, and S. X. Gong, "Low RCS microstrip patch antenna using requency-selective surface and microstrip resonator," IEEE Antennas Wireless Propag. Lett., Vol. 14, 1290-1293, 2015.
doi:10.1109/LAWP.2015.2402292 Google Scholar

13. Ding, X., Y. F. Cheng, W. Shao, and B. Z. Wang, "Broadband low-RCS phased array with wide-angle scanning performance based on the switchable stacked artificial structure," IEEE Trans. Antennas Propag., Vol. 67, No. 10, 6452-6460, 2019.
doi:10.1109/TAP.2019.2925202 Google Scholar

14. Jia, Y. T., Y. Liu, S. X. Gong, W. B. Zhang, and G. S. Liao, "A low-RCS and high-gain circularly polarized antenna with a low profile," IEEE Antennas Wireless Propag. Lett., Vol. 16, 2447-2480, 2017. Google Scholar

15. Liu, Q., C. L. Ruan, L. Peng, and W. X. Wu, "A novel compact archimedean spiral antenna with gap-loading," Progress In Electromagnetics Research Letters, Vol. 3, 169-177, 2008.
doi:10.2528/PIERL08032002 Google Scholar

16. Peng, L., K. Sun, J. Y. Xie, Y. J. Qiu, and X. Jiang, "UWB bi-directional bow-tie antenna loaded by rings," Journal of the Korean Physical Society, Vol. 69, No. 1, 22-30, Jul. 2016.
doi:10.3938/jkps.69.22 Google Scholar

Dr. Jian-Yi Chu

Dr. Lin Peng

Dr. Xiao-Feng Li

Dr. Xing Jiang