基于射频收发器的高中频DBF系统设计

doi:10.12305/j.issn.1001-506X.2022.02.02

摘要/Abstract

摘要：

由于数字波束形成(digital beam forming, DBF)系统需要多个天线单元来形成波束, 将极大增加系统的体积与功耗, 无法很好地应用在无人机、导弹和微纳卫星平台中。针对上述问题, 提出一种基于射频收发器AD9371的新型高中频(high intermediate frequency, high-IF)架构DBF系统硬件电路设计方法, 该设计在满足收发全数字、高精度、灵活、小型化和Ku波段需求的同时, 有效地减少了硬件系统干扰杂散, 提高了DBF系统性能。暗室环境测试验证了该系统在单波束和多波束的条件下具有优越的性能。

关键词: 数字波束形成, 高中频架构, 小型化, 射频收发器

Abstract:

Digital beam forming (DBF) system requires multiple antenna units to form the beam, which will greatly increase the system's size and power consumption and cannot be well applied in unmanned aerial vehicle, missile and micro-nano satellite platform. To solve the above problems, a kind of design method of a new high intermediate frequency (high-IF) architecture DBF system hardware circuit based on the radio frequency (RF) transceiver AD9371 is proposed. This design meets the requirements of full digital transmission and reception, high precision, flexibility, miniaturization and K-under (Ku) band, while effectively reducing the hardware system spurious interference and improving the performance of the DBF system. The superior performance of the system has been verified under single beam and multi-beam conditions in the darkroom environment test.

Key words: digital beam forming, high intermediate frequency (high-IF) architecture, miniaturization, radio frequency (RF) transceiver

中图分类号:

TN958.92

吴彬彬, 全英汇, 肖国尧, 李亚超, 邢孟道. 基于射频收发器的高中频DBF系统设计[J]. 系统工程与电子技术, 2022, 44(2): 365-375.

Binbin WU, Yinghui QUAN, Guoyao XIAO, Yachao LI, Mengdao XING. Design of high-IF DBF system based on RF transceiver[J]. Systems Engineering and Electronics, 2022, 44(2): 365-375.

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q	p	F_sum/GHz	F_dif/GHz
1	1	20.00	13.00
1	2	36.50	29.50
1	3	53.00	46.00
2	1	10.00	6.50
2	2	18.25	14.75
2	3	26.50	23.00
3	1	6.67	4.33
3	2	12.17	9.83
3	3	17.67	15.33

q	p	F_sum/GHz	F_dif/GHz
1	1	23.00	13.00
1	2	41.00	31.00
1	3	59.00	49.00
2	1	11.50	6.50
2	2	20.50	15.50
2	3	29.50	24.50
3	1	7.67	4.33
3	2	13.60	10.33
3	3	19.67	16.30

数据源	频段	最大幅度误差/dB	相位误差/(°)
文献[22]	L、S	±0.1	±1.8
本文	Ku	±0.1	±1.5

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