星载低剖面一维相扫缝隙阵天线设计

doi:10.12305/j.issn.1001-506X.2024.10.06

摘要/Abstract

摘要：

针对星载相控阵雷达应用背景, 提出一款工作于Ku频段的低剖面轻量化一维相扫缝隙阵天线。天线基于射频-数字-供电一体化设计思路, 并采用系统级封装(system in package, SiP)芯片实现高密度结构集成。与传统基于砖式或瓦片式收发(transmit/receive, T/R)组件的相控阵天线相比, 所提天线设计可以有效降低天线剖面高度和重量。天线中心工作频率为16 GHz, 具有600 MHz工作带宽, 可实现一维方向波束扫描。此外, 天线设计了自校准网络, 可用于在轨期间射频通道幅相特性实时检测。样机实测结果表明, 天线扫描角度范围可达±30°, 等效全向辐射功率(effective isotropic radiated power, EIRP)与接收增益与噪声温度比(gain-to-noise temperature ratio, G/T)值测试结果均与理论计算值吻合。

关键词: 星载, 低剖面, 缝隙阵天线, 高密度集成, 相控阵天线

Abstract:

Aiming at the application of satellite-borne phased array radar, a low-profile lightweight one-dimensional phased scanning slot array antenna operating in Ku band is proposed. The antenna is based on radio frequenly-digital-power integration design, and system in package (SiP) chips are used to achieve high-density structural integration. Compared with the traditional phased array antennas based on brick or tile transmit/receive (T/R) modules, the proposed antenna design can effectively reduced the height and weight of the antenna profile. The central working frequency of the antenna is 16 GHz, with a working bandwidth of 600 MHz, which can realize one-dimensional beam scanning. In addition, a self-calibration network is designed, which can be used for real-time detection of the amplitude and phase characteristics of the radio frequency channel in orbit. The measurement results of the prototype show that the scanning angle of the antenna can reach ±30°, and the testing result of effective isotropic radiated power (EIRP) and gain-to-noise temperature ratio (G/T) values are consistent with the theoretical calculation values.

Key words: satellite-borne, low-profile, slot array antenna, high-density integration, phased array antenna

中图分类号:

TN82

陈博, 王伟, 刘涓, 吉建民. 星载低剖面一维相扫缝隙阵天线设计[J]. 系统工程与电子技术, 2024, 46(10): 3285-3292.

Bo CHEN, Wei WANG, Juan LIU, Jianmin JI. Design of satellite-borne low-profile one-dimensional phased scanning slot array antenna[J]. Systems Engineering and Electronics, 2024, 46(10): 3285-3292.

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器件	输入/dBm	增益/dB	输出/dBm
连接器	-30.0	-0.5	-30.5
前端芯片	-30.5	23.0	-7.5
微带线	-7.5	-0.5	-8.0
幅相多功能	-8.0	3.0	-5.0
微带线	-5.0	-0.5	-5.5
功分器	-5.5	-7.0	-12.5
微带线	-12.5	-0.5	-13.0
双向放大	-13.0	10.0	-3.0
连接器	-3.0	-0.5	-3.5

器件	输入/dBm	增益/dB	输出/dBm
连接器	0.0	-0.5	-0.5
双向放大	-0.5	10.0	9.5
微带线	9.5	-0.5	9.0
功分器	9.0	-7.0	2.0
微带线	2.0	-0.5	1.5
幅相多功能	1.5	10.0	11.5
微带线	11.5	-0.5	11.0
前端芯片	11.0	19.0	30.0
连接器	30.0	-0.5	29.5

结果	工作频率/GHz	波束宽度/(°)	副瓣电平/dB	扫描下降/dB	EIRP/dBm	G/T/(dB/K)
实测结果	15.7	5.1	-16.2	1.6	73.4	3.8
	16.0	5.0	-14.6	1.2	73.5	4.0
	16.3	4.9	-17.8	1.2	74.0	4.3
仿真/理论计算结果	15.7	5.1	-13.3	1.8	73.3	3.8
	16.0	5.0	-13.3	1.8	73.4	4.0
	16.3	4.9	-13.4	1.9	73.6	4.2

技术架构	剖面高度/mm	质量面密度/(kg/m²)
砖块式	174.0	93.0
一体化式	44.0	51.0
片式	31.0	39.0
本文	14.0	19.1

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