文献类型：期刊文献

英文题名：A flexible broadband single RF architecture based on time-modulated array

作者：Ling, Xiaofeng[1]; Wang, Nan[1]

机构：[1] School of Information Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2020

卷号：517

起止页码：665

外文期刊名：Lecture Notes in Electrical Engineering

收录：EI(收录号：20192807154375)

语种：英文

外文关键词：Time division multiplexing - Architecture - Signal reconstruction - Manufacture - Signal receivers - Antennas - Bandwidth

摘要：With a single RF front-end to equivalently realize RF transformation of multiple antenna elements, single RF array is an important way to reduce the manufacturing cost of massive MIMO systems. Time-division-multiplexing-based single RF array is suitable for uplink receiver array. However, there are some bottlenecks in broadband applications, such as very fast switching speed requirement of RF switch, wide bandwidth requirement of analog front-end and low signal fidelity, which stop the wide use of this technology. To overcome the above bottlenecks, a time-modulated-array-based broadband single RF receiver array architecture is proposed in this paper, and the theory of time-modulated array along with the idea of signal reconstruction is also introduced to broadband the single RF array. With these methods, the performance requirements of RF switching speed and analog front-end are expected to be reduced significantly while the signal fidelity degradation can be safely ignored. The experimental results show that the proposed architecture can improve the bandwidth of the system with traditional RF switching elements. ? Springer Nature Singapore Pte Ltd. 2020.