Through improving the feeding mode,the traditional microstrip antenna with single unbalanced feed was changed into a new one with dual balanced feeds,and the RFID tag .

• 通过改变微带天线的馈电形式,将传统非平衡单馈电结构的微带天线改进成平衡双馈电结构,三维的微带天线也简化成平板结构,减小了RFID标签体积。