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发明公开
CN106935975A 一种大口径宽带接收相控阵天线 审中-实审

  • 专利标题： 一种大口径宽带接收相控阵天线
  • 专利标题（英）： Large-diameter wideband reception phased-array antenna
  • 申请号： CN201710155010.6
    申请日： 2017-03-14
  • 公开(公告)号： CN106935975A
    公开(公告)日： 2017-07-07
  • 发明人: 曾浩 , 王秋实 , 方贝贝 , 王伟 , 刘玲
  • 申请人： 重庆大学
  • 申请人地址： 重庆市沙坪坝区沙正街174号
  • 专利权人： 重庆大学
  • 当前专利权人： 重庆大学
  • 当前专利权人地址： 重庆市沙坪坝区沙正街174号
  • 主分类号： H01Q1/50
  • IPC分类号： H01Q1/50 ;  H01Q3/30 ;  H01Q21/00
一种大口径宽带接收相控阵天线
摘要：
一种大口径宽带接收相控阵天线，其特征为：(1)接收相控阵天线采用子阵结构，将N个阵元划分为L个子阵，每个子阵是一个独立的模拟窄带相控阵天线，子阵输出信号为xl(t)，l＝1,2,...,L。(2)第l个子阵输出信号通过ADC，转化为数字信号yl(k)，yl(k)经过一个数字延时滤波器，滤波器系数矢量为cl＝[cl1 ... clJ]，J是滤波器阶数；第l个数字延时滤波器实现的功能是把输入信号进行时间长度为τl的延时，输出信号为zl(k)。(3)每个子阵对应的数字延时滤波器采用Farrow滤波器结构，即系数常数ξlj,m采用频域加权法计算。(4)相控阵天线最后输出p(k)为所有数字延时滤波器输出之和，即本发明克服了相控阵天线“空间色散”和“时间色散”问题，可以应用于雷达、通信的大口径宽带相控阵天线领域。
摘要（英）：

A large-diameter wideband reception phased-array antenna is characterized in that (1) the reception phased-array antenna employs a sub-array structure, N array elements are divided into L sub-arrays, each sub-array is an independent simulation narrowband phased-array antenna, an output signal of each sub-array is x(t), and I is 1, 2 until L; (2) the output signal of a first sub-array is converted to a digital signal y(k) by an analog-digital converter (ADC), y(k) passes through a digital delay filter, a filter coefficient vector c=[c until c], J is filter order, the realization function of a first digital delay filter is in a way that an input signal is delayed by time span being Tau, and the output signal is z(k); (3) the digital delay filter corresponding to each sub-array employs a Farrow filter structure, namely, a coefficient is shown as specification, and the coefficient Zeta(j) is calculated by a frequency domain weighting method; and (4) the final output p(k) of the phased-array antenna is sum of outputs of all digital delay filters, namely, p(k) is shown as specification. By the large-diameter wideband reception phased-array antenna, the problems of spatial dispersion and time dispersion of the phased-array antenna are solved, and the phased-array antenna can be applied to the field of the large-diameter wideband phased-array antenna for radar and communication.

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