异向介质在PIFA天线中的应用

Metamaterials in PIFA Antenna Application

给出了一种新型结构的谐振单元,在给定频段上有效地降低了异向介质的色散特性。在PIFA天线的底板中引入这种异向介质,极大地改善了天线的辐射特性。理论分析表明:在2.2GHz到7.4GHz频段内,异向介质PIFA天线的回波损耗小于-10dB。加工调试了天线样品,测试结果验证了理论计算的有效性和设计的正确性。这一新型谐振单元的辐射特性,使该异向介质PIFA天线在无线通信中具有广阔的应用前景。

A new structure of resonant element is presented for improving the antenna performance,which can reduce the metamaterials dispersion characteristics effectively.Using the metamaterials to a planar inverted-F antenna（PIFA）,the radiation characteristics of the antenna is improved greatly.The theoretical analysis shows the antenna return loss is less than-10 dB between 2.2 GHz to 7.4 GHz.And the measured results also hold the proposed antenna has good bandwidth characteristics,which verify the validity of theoretical calculations,so this radiation feature makes the new PIFA suitable for wireless communication.