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Volume 12
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Article

Design of Broadband Low-RCS Array Antennas Based on Characteristic Mode Cancellation

by
Jialiang Han
1,
Dan Jia
1,*,
Biao Du
1,
Guodong Han
1,
Yongtao Jia
2 and
Zekang Zhao
1
1
The 54th Research Institute of China Electronics Technology Group Corporation, Shijiazhuang 050081, China
2
Science and Technology on Antenna and Microwave Laboratory, Xidian University, Xi’an 710071, China
*
Author to whom correspondence should be addressed.
Electronics 2023, 12(7), 1536; https://doi.org/10.3390/electronics12071536
Submission received: 26 February 2023 / Revised: 18 March 2023 / Accepted: 23 March 2023 / Published: 24 March 2023
(This article belongs to the Topic Antennas)
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Abstract

In this letter, a design method for low radar cross section (RCS) array antennas based on characteristic mode cancellation (CMC) is presented. Based on the characteristic mode theory (CMT), two novel microstrip elements are designed by introducing rectangular slots and cross slots, which produce 180° scattering phase difference by adjusting the size of slots. The dominant characteristic modes of the two elements achieve broadband dual-linear polarization CMC and similar radiation performances. The 4 × 4 array antenna consisting of these two antenna elements is designed. The operating band is from 4.55 GHz to 5.49 GHz (relative bandwidth 18.7%). The gain loss of the proposed array is about 0.1 dB compared to the reference array. The monostatic RCS is reduced for dual−linear polarized waves, and the 6 dB radar cross section reduction (RCSR) bandwidths are 62.3% and 35.7%, respectively. The prototype is fabricated and measured. The measured results of radiation pattern and RCS are in good agreement with the simulated results.
Keywords: antenna array; broadband radar cross section reduction; characteristic mode theory; characteristic mode cancellation antenna array; broadband radar cross section reduction; characteristic mode theory; characteristic mode cancellation

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MDPI and ACS Style

Han, J.; Jia, D.; Du, B.; Han, G.; Jia, Y.; Zhao, Z. Design of Broadband Low-RCS Array Antennas Based on Characteristic Mode Cancellation. Electronics 2023, 12, 1536. https://doi.org/10.3390/electronics12071536

AMA Style

Han J, Jia D, Du B, Han G, Jia Y, Zhao Z. Design of Broadband Low-RCS Array Antennas Based on Characteristic Mode Cancellation. Electronics. 2023; 12(7):1536. https://doi.org/10.3390/electronics12071536

Chicago/Turabian Style

Han, Jialiang, Dan Jia, Biao Du, Guodong Han, Yongtao Jia, and Zekang Zhao. 2023. "Design of Broadband Low-RCS Array Antennas Based on Characteristic Mode Cancellation" Electronics 12, no. 7: 1536. https://doi.org/10.3390/electronics12071536

APA Style

Han, J., Jia, D., Du, B., Han, G., Jia, Y., & Zhao, Z. (2023). Design of Broadband Low-RCS Array Antennas Based on Characteristic Mode Cancellation. Electronics, 12(7), 1536. https://doi.org/10.3390/electronics12071536

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