圆柱共形缝隙阵列的相位补偿方法研究

Compensation Methods Analysis of Cylindrically Conformal Slotted Array Antennas

对圆柱共形缝隙阵列的相位补偿方法进行了研究。首先根据对偶原理，给出了任意方向放置的缝隙单元的远场计算公式。然后根据叠加原理推导出圆柱共形缝隙阵列的远区场计算公式，并通过相位补偿方法使共形阵列的电磁特性接近于平面阵列。最后对9×9圆柱共形缝隙阵列、其对应的平面阵列以及相位补偿后阵列的远区场实际算例进行验证分析。结果表明，通过相位补偿可以对共形阵列的电磁特性进行改善。

The phase compensation methods of the cylindrically eonformal slotted array antennas are studied in this paper. Firstly, the far-field radiation formulas of slotted antennas placed arbitrarily are derived according to the duality principle. Then the far-field distributions of the cylindrically conformal slotted array are calculated using the principle of superposition. And the phase compensation methods are employed to make the characteristics of the conformal array close to the planar array. Finally, the far-field radiation characteristics of 9×9 cylindrically conformal, planar and compensated slotted array antennas are presented. The results show that the phase compensation methods can be used to improve the conformal array＇s characteristics.