文档介绍：第4章 天线综合
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非均匀幅度分布的直线阵
ne为偶数时，根据直线阵场强相加可以得到：
式中
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非均匀幅度分布的直线阵
no为奇数时
in increments of 5dB.
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Fourier 级数法
以上求和的结果即是有限项傅里叶级数，它在u空间是周期性的。对于一个期望的F(u)，所需激励条件可由正交性质得到：
该方法常用于赋形波束的综合.
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由Fourier级数法综合得到的64个点源阵列方向图。脉冲形方向图（ − ≤ u ≤ ，F(u)=1，其他F(u)=0）
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Schelkunov方法
阵因子可以写为关于复变量z的多项式形式，其中
以上为(N-1)阶多项式，它有(N-1)个零点，因此
对于均匀照射的阵列有：
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基于优化方法的方向图综合
GA; (. Haupt, Y. Rahmat-Samii, . Werner,… )
SA; (F. Ares, … )
ANN; (F. Ares, …)
TACO; (N. Karaboga, …).
PSO; (Y. Rahmat-Samii, . Werner,… ).
DE. (S. Yang, A. Rydberg, …)
…
Y. Rahmat-Samii and E. Michielssen, Electromagnetic Optimization by Genetic Algorithms. New York: Wiley, 1999.
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Pattern Synthesis Using Measured Element Patterns
Where e0(u) is the isolated element pattern and Cmn is an unknown coupling coefficient. The radiated signal from the whole array is
Steyskal, and J. S. Herd, “Mutual coupling compensation in small array antennas,” IEEE Trans. Antennas Propagat., vol. 38, no. 12, pp. 1971-1975, Dec. 1990.
Corresponding to an incident signal An at the nth element , the radiation
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Tseng-Cheng Pattern Synthesis Technique
For planar array with rectangular grid, conventional synthesis approach has been to assume separable and independent current distributions in the two dimensions and to employ the method of pattern multiplication.
If a Dolph-Chebyshev excitation is used, the radiation pattern of a rectangular array is optimum only in two principal sections; the patterns in other cross sections have a much broader main beam and greatly reduced sidelobes.
. Cheng and . Tseng proposed a synthesis approach for scanning rectangular arrays, which will produce a Chebyshev pattern in any cross section with the same specified SLL.
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F. I. Tseng, and D. K. Cheng, “Optimum scannable planar arrays with an invariant sidelob