A 0.31THz CMOS Uniform Circular Antenna Array Enabling Generation/Detection of Waves with Orbital-Angular Momentum
A 0.31THz CMOS Uniform Circular Antenna Array Enabling Generation/Detection of Waves with Orbital-Angular Momentum
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DOI：
10.1109/rfic51843.2021.9490402
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
Muhammad Ibrahim Wasiq Khan;Jongchan Woo;Xiang Yi;Mohamed I. Ibrahim;R. Yazicigil;A. Chandrakasan;
中科院分区：
文献类型：
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作者：
Muhammad Ibrahim Wasiq Khan;Jongchan Woo;Xiang Yi;Mohamed I. Ibrahim;R. Yazicigil;A. Chandrakasan;
本文报告了CMOS前端的第一个基于芯片的演示（在任何频率上），该前端以旋转波相（即轨道角动量或OAM）生成和接收电磁波。天线阵列在0.31THz处，可传输可重构的OAM模式，这些模式在$ M = 0 $（飞机波），+1（左手），-1（右手）和叠加之间进行数字切换（+1）+（-1）状态。 DBM在OAM源模式下消耗了154MW的DC功率。经过实验验证并展示了完整的硅OAM链接。
This paper reports the first chip-based demonstration (at any frequency) of a CMOS front-end that generates and receives electromagnetic waves with rotating wave phase front (namely orbital angular momentum or OAM). The chip, based on a uniform circularly placed patch antenna array at 0.31THz, transmits reconfigurable OAM modes, which are digitally switched among the $m=0$ (plane wave), +1 (left-handed), −1 (right-handed) and superposition (+1)+(-1) states. The chip is also reconfigurable into a receiver mode that identifies different OAM modes with >10dB rejection of unintended modes. The array, driven by only one active path, has a measured EIRP of −4.8dBm and consumes 154mW of DC power in the OAM source mode. In the receiver mode, it has a measured conversion loss of 30dB and consumes 166mW of DC power. The output OAM beam profiles and mode orthogonality are experimentally verified and a full silicon OAM link is demonstrated.