首页> 外文学位 >Development of a phased array using LNBs with non-synchronized clocks
【24h】

Development of a phased array using LNBs with non-synchronized clocks

机译:使用具有非同步时钟的LNB开发相控阵

获取原文
获取原文并翻译 | 示例

摘要

A passive phased array is an array of antennas in which the phases of the signals on each element are controlled to be added to form a spatial beam. The advantage is that one can steer the beam without physically moving the constituent elements as well as create multiple beams on the sky simultaneously. This has application in the field of satellite and spacecraft communications where there is expected to be a large increase in satellite volume due to the increasing access to space. Traditional phased arrays can become costly to synchronize at satellite down-link frequencies, therefore we have built a phased array composed of cheap low noise block-downconverters (LNBs) that uses an external frequency-phase calibration transmitter to synchronize the array. We have shown that the four element array can achieve a factor of sixteen increase in gain over sufficient timescales and can be steered electronically producing the predicted beam.
机译:无源相控阵是天线的阵列,其中每个元素上信号的相位被控制为相加以形成空间波束。优点是可以操纵光束而无需实际移动组成元素,也可以同时在天空上创建多个光束。这已经在卫星和航天器通信领域中得到了应用,由于越来越多的太空进入,预计卫星的体积将大大增加。传统的相控阵在卫星下行链路频率上进行同步可能会变得昂贵,因此,我们构建了一个由廉价的低噪声块下变频器(LNB)组成的相控阵,该相控阵使用外部频率相位校准发射机进行同步。我们已经表明,在足够的时间范围内,四元素阵列可以使增益增加16倍,并且可以通过电子控制产生预测光束。

著录项

  • 作者

    Murray, James I.;

  • 作者单位

    The University of Texas Rio Grande Valley.;

  • 授予单位 The University of Texas Rio Grande Valley.;
  • 学科 Electromagnetics.;Electrical engineering.
  • 学位 M.S.
  • 年度 2016
  • 页码 61 p.
  • 总页数 61
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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