The Six-Port in Modern Society
The Six-Port in Modern Society
复制标题
现代社会的六端口
DOI：
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发表时间：
2010
影响因子：
3.6
通讯作者：
Robert Weigel
中科院分区：
文献类型：
--
作者：
Alexander Koelpin;G. Vinci;B. Laemmle;Dietmar Kissinger;Robert Weigel
现代无线传感和通信系统通常基于高带宽和高载波频率。在超过100 GHz的范围内，常见的接收机架构（如有源零差或外差接收机）存在混频所需放大的问题。此外，高带宽对于这些系统是一个问题。在这种情况下，六端口接收器是一个很好的替代品，同样适用于低容量市场。六端口概念基于两个RF输入信号的相加叠加，使用四个不同的相对相位，导致相长或相消相互作用。所得到的信号通过在检波器或混频模式下工作的二极管电路直接下变频到基带。复值信息可以容易地从四个基带电压重构。从用于替代矢量网络分析仪的反射计方法到用于传感和通信的接收器的历史演变。最近的一个话题是汽车车间在调整汽车远程雷达传感器方面的技术差距。在这里，六端口概念作为对准工具是一个很好的选择，因为它具有出色的相位分辨率。目前，在MMIC上集成频率超过100 GHz的六端口接收机是当前工作的重点，并将在未来得到加强。六端口概念是否会取代常见的有源零差和外差接收机？不，但它是无线传感和通信系统中毫米波频率和超高带宽应用的重要替代品。这种现代概念可以为无线传感器和传感器网络开辟新市场。
Modern wireless sensing and communication systems are often based on high bandwidth and high carrier frequencies. In the range beyond 100 GHz, common receiver architectures, like active homodyne or heterodyne receivers, have an issue with the amplification needed for mixing. Also, high bandwidth is a problem for these systems. In this context, the six-port receiver is a good alternative, just as well as for lowvolume markets. The six-port concept is based on the additive superposition of the two RF input signals using four different relative phases leading to constructive or destructive interaction. The resulting signals are directly downconverted to baseband by diode circuits operated in detector or mixing mode. The complexvalued information can be easily reconstructed from the four baseband voltages. Historic evolution leads from the reflectometer approach for an alternative vector network analyzer to receivers for sensing and communications. A recent topic is the technology gap in automotive workshops for adjusting the long-range radar sensor of a car. Here, the six-port concept as alignment tool is a good choice, because of its excellent phase resolution. Currently, the integration of the six-port receiver on a MMIC for frequencies beyond 100 GHz is the focus of current work and will be intensified in the future. Will the six-port concept replace common active homodyne and heterodyne receivers? No, but it is a serious alternative for millimeter-wave frequencies and ultrahigh-bandwidth applications in wireless sensing and communication systems. This modern concept can tap new markets for both wireless sensors and sensor networks.