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Simple inverted-F antenna based on independent control of resonant frequency for LTE/wireless wide area network applications

机译:用于LTE /无线广域网应用的基于谐振频率独立控制的简单倒F型天线

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摘要

In this study, a simple inverted-F antenna (IFA) that can independently tune resonant frequency is proposed. The proposed antenna covers the hexa-band (long term evolution/wireless wide area network (LTE700/WWAN)) for mobile handset applications. The proposed structure consists of four radiating branches. Each branch operates as an IFA and has a resonant length of quarter-wavelength at the fundamental frequency. One remarkable feature of the proposed antenna is that all four resonant frequencies can be tuned independently without affecting the other resonant frequencies. The independent resonant control is explained through analysis based on parameter study and simulated electric field distribution. The occupied antenna volume of the proposed design is 50 × 15 × 3 mm, which is appropriate for the smart phone applications. A prototype of the proposed antenna is fabricated and measured, and the obtained results, including the reflection coefficient, efficiency and gain, are presented. A stable and omni-directional radiation pattern with a reasonable gain has been observed over the operating bandwidth.
机译:在这项研究中,提出了一种可以独立调谐谐振频率的简单倒F型天线(IFA)。拟议中的天线涵盖了用于手机应用的六频段(长期演进/无线广域网(LTE700 / WWAN))。拟议的结构包括四个辐射分支。每个分支都作为IFA运作,并且在基频处具有四分之一波长的谐振长度。所提出的天线的一个显着特征是,所有四个谐振频率都可以独立调谐,而不会影响其他谐振频率。通过基于参数研究和模拟电场分布的分析来解释独立谐振控制。拟议设计的天线占用空间为50×15×3 mm,适合智能手机应用。制造并测量了所提出天线的原型,并给出了包括反射系数,效率和增益在内的所得结果。在工作带宽范围内,观察到了稳定且具有合理增益的全向辐射方向图。

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