公开(公告)号：US06677898B2

公开(公告)日：2004-01-13

申请号：US10230351

申请日：2002-08-29

申请人： Jun Cheng ,  Akifumi Hirata ,  Takashi Ohira ,  Kyouichi Iigusa ,  Takuyo Nakaji ,  Nobuyoshi Kikuma ,  Naoki Inagaki

发明人： Jun Cheng ,  Akifumi Hirata ,  Takashi Ohira ,  Kyouichi Iigusa ,  Takuyo Nakaji ,  Nobuyoshi Kikuma ,  Naoki Inagaki

IPC分类号： H01Q322

CPC分类号： H01Q19/32 ,  H01Q3/24

摘要： An adaptive controller for an ESPAR antenna randomly perturbs a bias voltage vector V(n) composed of elements of bias voltage values Vm by a random vector R(n) generated by a random number generator, compares an objective function value J(n) of a cross correlation coefficient for a bias voltage vector V(n) before the perturbation with an objective function value J(n+1) of a cross correlation coefficient for a bias voltage vector V(n+1) after the perturbation, and selects and sets the bias voltage Vm corresponding to that when the cross correlation coefficient increases before and after the perturbation. Then the adaptive controller repeats the random perturbation and setting from the bias voltage of respective varactor diodes. This leads to that it is not necessary to provide a long training sequence signal, and the control process can be executed with learning so that a performance can be improved every iteration for search.

摘要翻译： 用于ESPAR天线的自适应控制器随机扰乱由随机数发生器产生的随机向量R（n）由偏置电压值Vm的元素组成的偏置电压矢量V（n），比较目标函数值J（n） 在扰动之前的偏置电压矢量V（n）与偏移电压矢量V（n + 1）的互相关系数的目标函数值J（n + 1）之后的偏置电压矢量V（n）的互相关系数，并且选择和 设置与互扰相关系数增加前后的偏置电压Vm。 然后，自适应控制器从相应的变容二极管的偏置电压重复随机扰动和设置。 这导致不需要提供长的训练序列信号，并且可以通过学习来执行控制过程，使得可以在每次迭代搜索时提高性能。