Ku波段多路窄带信号相位检测与校准

doi:10.12305/j.issn.1001-506X.2026.03.03

Abstract

Abstract:

To address the issue of communication quality degradation caused by phase misalignment in multi-channel signals within complex electromagnetic environments, a real-time calibration method for Ku-band ultra-narrowband signals based on radio frequency system-on-chip is proposed. The system adopts a configurable radio frequency front-end and digital compensation collaborative architecture, combined with time-frequency domain hybrid correction algorithm, and adopts a multi-channel parallel processing hardware structure to achieve synchronous processing and phase compensation of multi-channel signals, breaking through the accuracy and real-time limitations of traditional phase detection methods in processing narrowband signals. The experimental results show that the system can effectively improve phase consistency in strong interference environments. After calibration, the phase error is controlled at ±0.02°, which is 80% higher than the minimum error of ±0.1° in the vector network analyzer calibration scheme. The signal quality after calibration meets the requirements of tactical systems.

Key words: radio frequency system-on-chip, Ku-band, extremely narrowband signal, phase detection, multi-channel synchronization

CLC Number:

TN 911.23

Lingfeng FU, Guoyao XIAO, Jia TANG, Lixiang GAO, Cheng LIU, Yinghui QUAN. Phase detection and calibration of multi-channel narrowband signals in Ku-band[J]. Systems Engineering and Electronics, 2026, 48(3): 758-769.

Figures/Tables 20

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指标	本系统	Keysight E5063A	R&S ZVA40
频率范围/GHz	12~18	0.01~18	0.01~24
信号带宽/MHz	>5	>10	>5
脉冲宽度/ns	>20	不适用	>100
相位分辨/（°）	0.01	0.1	0.02
多通道同步误差/ps	50	不适用	120

μ值	收敛时间/μs	稳态误差/（°）
0.002	42.3	0.004 7
0.05	24.7	0.006 1
0.10	18.2	0.008 3
0.20	12.5	0.014 9
0.30	9.8	0.023 6
0.50	发散	不适用

信号参数	取值
中心频率/GHz	14.35
脉冲带宽/MHZ	50
功率/dBm	3
脉冲脉宽/ns	20~2 000（可调）

资源	利用	可用	利用率/%
LUT	68 464	425 280	16.10
LUTRAM	29 313	213 600	13.72
FF	125 294	850 560	14.73
BRAM	375.50	1 080	34.77
DSP	1 014	4 272	23.74
IO	19	347	5.48
GT	4	16	25.00
BUFG	13	696	1.87
MMCM	2	8	25.00

资源	方法
资源	IQ混频法	FFT相位估计法	数字相关器法	CORDIC迭代法
LUT	12~15	18~22	10~12	25~30
FF	8~10	12~15	6~8	18~20
DSP	25~30	15~20	35~40	2~5
BRAM	5~8	20~25	3~5	8~10
典型特征	需要复数乘法器阵列	依赖FFT核和窗函数存储器	高DSP消耗，低控制复杂度	时间换空间， DSP利用率极低

Phase detection and calibration of multi-channel narrowband signals in Ku-band

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