• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文OA文献 >Dual-band monopole antenna with frequency-tunable feature for WiMAX applications
【2h】

Dual-band monopole antenna with frequency-tunable feature for WiMAX applications

机译：具有频率可调功能的双频单极天线，适用于WimaX应用

页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A planar dual-band monopole antenna with a frequency-tunable band is presented. The structure of the antenna radiator has a stem connecting to two branches that are used to generate two frequency bands at around 2.4 and 3.4 GHz for Worldwide Interoperability for Microwave Access (WiMAX) applications. The lower band covers the WiMAX frequency band of 2.3-2.4 GHz, while the higher band is frequency-tunable to the WiMAX frequency bands of 3.3-3.4, 3.4-3.6 and 3.6-3.8 GHz. The frequency tunability is achieved by using the reverse-bias voltage across a varactor that is placed between the stem and one of the radiating branches of the radiator. In this study, the radiating branch responsible for the higher band is selected for tuning. A simple and novel biasing circuit, consisting of two radio frequency (RF) choke resistors and an L-shaped stub, is designed for biasing the varactor. Results show that the higher band can be continuously tuned in frequency, yet keeping the lower band unchanged. The reflection coefficient, radiation pattern, and efficiency of the antenna are studied using computer simulation and measurement. © 2013 IEEE.
机译：提出了一种具有频率可调频带的平面双频带单极天线。天线辐射器的结构具有连接到两个分支的主干，两个分支用于生成2.4 GHz和3.4 GHz左右的两个频段，以实现微波访问（WiMAX）应用的全球互通性。较低的频带覆盖2.3-2.4 GHz的WiMAX频带，而较高的频带可频率调谐至3.3-3.4、3.4-3.6和3.6-3.8 GHz的WiMAX频带。通过使用变容二极管两端的反向偏置电压来实现频率可调，该变容二极管位于主干和辐射体的辐射分支之一之间。在这项研究中，选择负责较高频段的辐射分支进行调谐。一种简单新颖的偏置电路，由两个射频（RF）扼流电阻和一个L形短截线组成，用于偏置变容二极管。结果表明，较高的频段可以连续进行频率调谐，但保持较低的频段不变。使用计算机仿真和测量研究天线的反射系数，辐射方向图和效率。 ©2013 IEEE。

著录项

  • 作者

    Cheung SW; Yuk TTI; Sun X;

  • 作者单位
  • 年度 2013
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号