Compact 28-GHz two-dimensionally scanning multibeam array with sidelobe suppression

Publication Type:
Conference Proceeding
2018 IEEE MTT-S International Wireless Symposium, IWS 2018 - Proceedings, 2018, pp. 1 - 4
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© 2018 IEEE. This work presents a compact 28-GHz two-dimensionally (2-D) scanning multibeam array antenna with sidelobe suppression in substrate integrated waveguide (SIW) technology. The proposed antenna is comprised of a 2 × 8 slot array and a beam-forming network (BFN), which is realized by combining two dual-layer 4 × 8 Butler matrixes (BMs) and four 90° couplers. The introduced 4 × 8 BM can help suppress the sidelobe level (SLL) in the E-plane so that the anti-interference capability in the E-plane can be improved. Taking the complicated structure of the classic 4 × 8 BM into account, some modifications of the BM are conducted to achieve better compactness.
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