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在幅度激励为恒定的限制下,根据稳相原理和对线源作均匀间隔采样,导出了具有csc~2方向图形的线阵单元相位分布。初步计算和实验结果表明,所综合的图形在成形区内最大偏离约为±3dB,在成形区外的最大副瓣电平为-15dB。对于平面相控阵天线,分析指出,波束在作方位电扫描时,csc~2图形要发生畸变。
Under the limitation of constant amplitude excitation, the phase distribution of the linear array elements with csc ~ 2 patterns is deduced according to the principle of stable phase and the uniform sampling of line source. The preliminary calculation and experimental results show that the maximum deviation of the integrated pattern in the forming zone is about ± 3dB, and the maximum sidelobe level outside the forming zone is -15dB. For the planar phased array antenna, the analysis points out that when the beam is used for the electrical scanning, the csc ~ 2 pattern will be distorted.