摘要
提出了一种适用于手机的新型宽带两天线系统。通过在天线单元上开Z形槽和采用折叠的T形地枝结构的方法来增大带宽。该天线实测的-10dB阻抗带宽达到了715MHz(1.91～2.625GHz),覆盖了UMTS和2.4GHzWLAN两个频段,在整个工作频带内天线单元之间的互耦小于-10dB。测量得到的两个单元的方向图大致呈互补关系。根据实测结果计算了两个天线单元的包络相关系数、平均有效增益和两天线系统的分集增益。结果表明该两天线系统能够为无线通信系统提供方向图分集。
A novel wideband two-element antenna system for mobile telephone was proposed. By employing Z-shaped slots at the elements and folded T-shaped ground branches to broaden the bandwidth,the proposed antenna obtains a -10 dB measured impedance bandwidth 715 MHz（1.91-2. 625 GHz）,covering UMTS and 2. 4- GHz WLAN bands. The measured mutual coupling between the two elements is below -10 dB in the whole working band. The measured radiation patterns of the two elements generally cover complementary space regions. According to the measured results, the envelop correlation between the two elements, the mean effective gains of each element and the diversity gain of the antenna system are calculated. The results show that the proposed antenna can provide pattern diversity for wireless communication systems.
出处
《电波科学学报》
EI
CSCD
北大核心
2010年第4期711-716,共6页
Chinese Journal of Radio Science
基金
国家重点基础研究发展规划项目2009CB320205)
国家自然科学基金项目60971005)
国家“八六三”高技术项目2006AA01Z265,2007AA01Z284)
清华-高通联合研究计划
