一种新型宽带四单元手机天线设计

Design of a novel wideband mobile phone antenna with four-element

文章提出了一种应用于手机的新型宽带四单元天线系统。该系统由4个完全相同的平面倒F天线(planar inverted-F antenna,PIFA)组成,并采用附加寄生单元、地板上开槽和延伸T型枝节相结合的方法来减少天线单元之间的耦合。实测结果表明,-10dB阻抗带宽为1.31GHz (1.60~2.91GHz),覆盖了DCS1800、PCS1900、UMTS2100、LTE2300、LTE2500以及2.4GHz WLAN 6个频段。在整个工作频带内,除S12和S34小于-14dB外,其他单元之间的隔离度均小于-15dB。计算得到的包络相关系数均小于0.06,表明该天线系统具有良好的分集性能,在5G网络中具有广阔的应用前景。

A novel wideband four element antenna system for mobile phone is proposed. The antenna system consists of four identical planar inverted-F antenna（PIFA） elements. To decrease the mutual coupling between antenna elements, a decoupling measure is adopted, which merges the ways of adding parasitic strips, slotting on the ground and protruding T shape branches. The measured results show that the proposed antenna system obtains a- 10 dB impedance bandwidth of 1.31 GHz（1.60 2.91 GHz）, covering DCS1800, PCS1900, UMTS2100, LTE2300, LTE2500 and 2. 4 GHz WEAN bands. In addition to the S12 and S34 that are less than -14 dB, the mutual coupling between other elements is less than- 15 dB in the whole operation band. The calculated envelop correiation coefficients are all less than 0.06, which indicates the good diversity performance of the antenna system. It has a broad application prospect in 5G network.