IEEE Access | |
Design of Comb-Line Array Antenna for Low Sidelobe Level in Millimeter-Wave Band | |
Sang-Hoon Lee1  Dong-Wook Seo1  Hyun Joon Lee2  Jae-Ho Lee2  Jang-Yeol Kim2  Jung-Hoon Oh2  In-Kui Cho2  | |
[1] Division of Electronics and Electrical Information Engineering/Interdisciplinary Major of Maritime AI Convergence, Korea Maritime and Ocean University, Busan, South Korea;Electronics and Telecommunications Research Institute (ETRI), Daejeon, South Korea; | |
关键词: Antenna array; comb-line antenna; low sidelobe; microstrip antenna; millimeter-wave; | |
DOI : 10.1109/ACCESS.2022.3169280 | |
来源: DOAJ |
【 摘 要 】
In this paper, a deformed radiating element is proposed to design a comb-line array antenna for low sidelobe levels in the millimeter-wave band. To design the comb-line array antenna with a low sidelobe level, the use of the wide radiating elements for a relatively large radiation conductance is required. However, the conventional rectangular radiating element has transverse current flows on it, resulting in undesirable transverse radiation conductance for cross-polarization. On the contrary, in the proposed radiating element, which is implemented by cutting obliquely the connection part to the feeding line from a rectangular element, the radiations from the transverse currents cancel each other, and low radiation conductance for cross-polarization and dominant radiation conductance for co-polarization are achieved. A 17-element linear comb-line array antenna with the sidelobe below −20 dB is designed and measured at 79 GHz. Using the proposed radiating elements, we obtained the sidelobe level of −21.9 dB in the array, but the array using the conventional radiating elements shows the sidelobe level of −16.9 dB. This letter demonstrates the availability of the proposed element for the easy and accurate design of the comb-line array antenna with the low sidelobe level.
【 授权许可】
Unknown