在双层结构的基础上，结合电容耦合馈电技术，进一步扩展了微带天线的阻抗带宽；

In foundation of the dual-layer structure, combining with capacitive coupled feed technology, the impedance bandwidth of the microstrip antenna has been further expanded;

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采用磁场定向矢量控制技术的无刷双馈电机调速系统，其性能基本能够满足运行要求，但存在超调及动态稳定慢等问题。

The brushless doubly-fed machine (BDFM) is based on the technic of field oriented control and the performance of its adjustable-speed drive can ultimately meet the need of the operation.

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分析了各种馈电线自动化技术的控制模式。

Various control modes of power feeder automation technology are analyzed.

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