TY - JOUR
T1 - A Butler Matrix-Based Multibeam W-Band Slot Antenna Array Fabricated by Metal Additive Manufacturing Technology
AU - Wang, Dongxu
AU - Xu, Kai Da
AU - Cao, Yuanxi
AU - Guo, Cheng
AU - Yan, Sen
N1 - Publisher Copyright:
© 1963-2012 IEEE.
PY - 2024/6/1
Y1 - 2024/6/1
N2 - In this communication, a ridged waveguide (RWG) slot antenna array based on micro-coaxial line (CL) Butler matrix beamforming network (BFN) operating in the W-band is proposed. Compared with traditional rectangular waveguide, the employment of RWG decreases the spacing between the adjacent radiators, thereby enhancing the beam-scanning range of the antenna array. Besides, in order to meet the requirements of compact dimensions and precise fabrication, an innovative micro metal additive manufacturing (M-MAM) technology is utilized for antenna fabrication. This technology involves a full-metal process characterized by low loss, ensuring the high-efficiency and high-gain properties of the antenna. During the antenna design using M-MAM technology, fabrication limitations are encountered, resulting in a novel arrangement of the antenna topological structure. The measured results demonstrate that the proposed RWG 4×4 slot antenna array, operating at 100 GHz, achieves a beam-scanning range of ±50° with a maximum gain of 14.5 dBi. The wide beam-scanning range, high operating band, and compact dimensions of the proposed antenna make it suitable for multibeam applications, providing a novel option for W-band multibeam antenna.
AB - In this communication, a ridged waveguide (RWG) slot antenna array based on micro-coaxial line (CL) Butler matrix beamforming network (BFN) operating in the W-band is proposed. Compared with traditional rectangular waveguide, the employment of RWG decreases the spacing between the adjacent radiators, thereby enhancing the beam-scanning range of the antenna array. Besides, in order to meet the requirements of compact dimensions and precise fabrication, an innovative micro metal additive manufacturing (M-MAM) technology is utilized for antenna fabrication. This technology involves a full-metal process characterized by low loss, ensuring the high-efficiency and high-gain properties of the antenna. During the antenna design using M-MAM technology, fabrication limitations are encountered, resulting in a novel arrangement of the antenna topological structure. The measured results demonstrate that the proposed RWG 4×4 slot antenna array, operating at 100 GHz, achieves a beam-scanning range of ±50° with a maximum gain of 14.5 dBi. The wide beam-scanning range, high operating band, and compact dimensions of the proposed antenna make it suitable for multibeam applications, providing a novel option for W-band multibeam antenna.
KW - Butler matrix
KW - W-band
KW - micro metal additive manufacturing (M-MAM)
KW - multibeam application
KW - ridged waveguide (RWG) slot antenna array
UR - https://www.scopus.com/pages/publications/85192136390
U2 - 10.1109/TAP.2024.3392374
DO - 10.1109/TAP.2024.3392374
M3 - 文章
AN - SCOPUS:85192136390
SN - 0018-926X
VL - 72
SP - 5349
EP - 5354
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 6
ER -