紧缩场馈源偏焦相位高效计算方法

doi:10.12305/j.issn.1001-506X.2022.10.07

Abstract

Abstract:

It is of great practical value to study the efficient calculation method of phase characteristics of defocusing feed in compact antenna test range (CATR). Based on the geometrical optics (GO) which is applicable to high frequency conditions, and according to the basic law of light propagation, the fast calculation formulas of quiet zone phase for single rotating paraboloid and dual parabolic cylinder can be obtained through the derivation of optical path difference in three dimensional space. The comparison results between calculation simulation and measurement show that they are consistent with each other, and the timeliness of defocusing feed model analysis of phase in CATR is improved on the premise of ensuring the calculation accuracy, which can be used to guide the design, on-site installation and debugging of high-frequency feed in CATR.

Key words: optical path difference, geometrical optics (GO), compact antenna test range (CATR), defocusing feed, quiet zone phase

CLC Number:

TN92

Yongquan JIANG, Hongcheng YIN, Chongjiang MO. Efficient calculation method of phase characteristics of defocusing feed in compact antenna test range[J]. Systems Engineering and Electronics, 2022, 44(10): 3046-3052.

Figures/Tables 11

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Table 1

References 16

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频率点		统计指标	分析方法
频率点		统计指标	仿真法	公式法
单旋转抛物面	10 GHz	计算时间/min	12	5
	10 GHz	峰值内存/MB	162.4	17.4
	40 GHz	计算时间/min	50	5
	40 GHz	峰值内存/MB	366.8	17.4
双抛物柱面	10 GHz	计算时间/min	36	10
	10 GHz	峰值内存/MB	223.7	40.6
	40 GHz	计算时间/min	134	10
	40 GHz	峰值内存/MB	453.6	40.6

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Efficient calculation method of phase characteristics of defocusing feed in compact antenna test range

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