A 28 GHz CMOS Butler matrix for 5G mm-wave beamforming systems

被引：9
|
作者：
Park, Jeongsoo [1 ]
Kim, Jeong-Geun [1 ]
机构：
[1] Kwangwoon Univ, Dept Elect Engn, 20 Kwangwoon Ro, Seoul 01897, South Korea
来源：
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2020年 / 62卷 / 07期
关键词：
28 GHz NxN Butler matrix; DP8T switch network; 2N-1; beam; beamforming; CMOS;
D O I：
10.1002/mop.32353
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents 28 GHz CMOS 8x8 Butler matrix which can improve the beamforming capability in 5G mm-wave communication systems. The proposed 28 GHz NxN Butler matrix can increase the number of the antenna beam pattern from N to 2N - 1 beams with DP8T switch network including a lumped 180 degrees coupler, 22.5 degrees phase shifter, and switches. The beamformer is fabricated using 65 nm CMOS process and the size is 1.8 x 2.5 mm(2). The DC current consumption is 145 mA (Rx) and 180 mA (Tx) at 2.5 V supply voltage. The proposed 28 GHz CMOS 8x8 Butler Matrix is able to make 15 beam patterns with +/- 63 degrees beam scan and low sidelobe level, which is suitable in low cost 5G mm-wave beamforming system.
引用
收藏
页码：2499 / 2505
页数：7
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