给出了数字T／R组件及其DDS的基本原理框图，分析了实现DBF发射技术的方法，研制了4个DBF发射通道并给出了测试结果，最后提出了有待于解决的技术问题。

The basic function block diagram of digital T/R module and DDS is presented in this paper. The method of realizing DBF transmitting technology is analyzed, then four DBF transmitting channels are designed and some results are given out. At last some key technical problems that are being to resolve in the future are proposed.

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