Testbed for phased array communications from 275 to 325 GHz
Testbed for phased array communications from 275 to 325 GHz
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275 至 325 GHz 相控阵通信测试台
DOI：
10.1109/csics.2017.8240474
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
T. Kürner
中科院分区：
文献类型：
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作者：
T. Merkle;A. Tessmann;M. Kuri;S. Wagner;A. Leuther;S. Rey;M. Zink;H. Stulz;M. Riessle;I. Kallfass;T. Kürner
开发了第一个模块化 4 通道前端，用于探索 300 GHz 载波频率的相控阵通信。栅极长度为 35 nm 的变质 HEMT 工艺是集成每个发送和接收通道的关键实现技术。所有通道均采用正交直接转换架构。使用连续波基带测试信号测得的接收阵列的 RF 带宽超过 55 GHz，发射阵列的 RF 带宽超过 45 GHz。本机振荡器路径中的相移是这项工作的重点。该概念是通过使用四个同步直接数字合成通道和一个高功率倍频器 12 MMIC 来实现的。还提出了通过使用高阶调制方案来研究和评估 300 GHz 的阵列相干性，并以 4 Gbaud 的 16-QAM 信号与每个通道的相位噪声测量进行比较为例进行了强调。
The first modular 4-channel frontend for exploring phased array communications at a carrier frequency of 300 GHz was developed. A metamorphic HEMT process with a gate length of 35 nm was the key enabling technology for the integration of each transmit and receive channel. All channels implemented the quadrature direct conversion architecture. The measured RF bandwidth exceeded 55 GHz for the receive array respectively 45 GHz for the transmit array using a continuous wave baseband test signal. Phase shifting in the local oscillator path was the focus of this work. The concept was realized by using four synchronized direct digital synthesis channels followed by a high power frequency multiplier-by-12 MMIC. Investigating and assessing the array coherency at 300 GHz by the use of higher order modulation schemes was also proposed, highlighted on the example of a 16-QAM signal at 4 Gbaud in comparison to phase noise measurements of each channel.