microstrip antenna短语¹³¹⁶²⁰⁺³ 基本例句 微波传输带天线 A two layer electromagnetic coupled circular patch microstrip antenna is adopted to widen the frequency band of the antenna. 为了展宽天线的带宽，采用双层圆形贴片电磁耦合天线。 cnki Finally, directions for microstrip antenna developments and applications are summarized. 最后展望了发展方向。 cnki