A Compact 38 GHz Multibeam Antenna Array With Multifolded Butler Matrix for 5G Applications

作者：Cao, Yue; Chin, Kuo-Sheng^*; Che, Wenquan; Yang, Wanchen; Li, Eric S.

来源：IEEE Antennas and Wireless Propagation Letters, 2017, 16: 2996-2999.

DOI：10.1109/LAWP.2017.2757045

• Butler matrix
• fifth-generation (5G) application
• multibeam antenna
• substrate integrated waveguide (SIW)

A compact 38 GHz multibeam antenna array is presented for fifth-generation applications. A beamforming network featuring a substrate integrated waveguide (SIW) multifolded 4 x 8 Butler matrix is constructed. Benefiting from multilayer structure, the Butler matrix is highly integrated and assembled underneath the radiators to achieve compactness. The Butler matrix is, then, combined with an 8 x 10 SIW slot-coupled patch array to establish four steering beams along the H-plane and to accomplish size reduction of 53.5% in its longitudinal direction. For demonstration, one prototype of the proposed antenna array was fabricated. The measured four beams point toward +/- 36 degrees and +/- 12 degrees with gains equal to 19.8 and 21 dBi, respectively.

• 出版日期2017
• 单位长春大学; 南京理工大学