太赫兹高速通信系统前端关键技术

[摘要] 对构成太赫兹无线系统的2种关键电路（分谐波混频器和二倍频器）进行了深入研究。在关键电路研究取得突破的基础上，开展了太赫兹无线通信技术研究，构建了220 GHz无线通信实验验证系统。220 GHz实验验证系统在室外200 m的通信距离上，实现了码速率为3.52 Gbit/s的高速无线数据传输，传输误码率为1.92×10-6。测试结果展现出太赫兹波用于高速无线通信的巨大潜力，为未来开发太赫兹频率资源作为新的无线通信频段奠定了重要的理论和技术基础。

[关键词] 高速无线通信；太赫兹技术；分谐波混频器；倍频器

[Abstract] Two key circuits (subharmonic mixer and double multiplier) for terahertz wireless system are studied in this paper. On the basis of the breakthrough in the research of key circuits, the terahertz wireless communication technology is studied, and the experimental verification system of 220 GHz wireless communication is constructed. The high speed wireless data transmission with a code rate of
3.52 Gbit/s has been realized by the 220 GHz experimental verification system in the outdoor 200 m communication distance, and the transmission error rate is 1.92×10-6. The test results show that the great potential of the terahertz wave for high speed wireless communication. It lays an important theoretical and technical foundation for the development of terahertz frequency resources as a new wireless communication band in the future.

[Keywords] high-speed wireless communication; terahertz technology; sub-harmonic mixer; multiplier