太赫兹科学与电子信息学报2016，Vol.14Issue(4)：562-566,5.DOI:10.11805/TKYDA201604.0562
通道幅相误差对数字阵列天线性能影响及校准
Effect of channel amplitude/phase errors on digital array performance and calibration
唐晓雷 1张令坤 1陈飞1
作者信息
- 1. 南京电子技术研究所，江苏南京 210039
- 折叠
摘要
Abstract
The calibration of channel amplitude/phase errors is necessarily required in order to achieve the performance of low side-lobe digital array. The relationships among channel amplitude/phase errors, array channels and the main performance (side-lobe level, beam direction, gain) of digital array are analyzed. Analysis results show that, the side-lobe, gain and beam direction would deteriorate as the amplitude/phase errors increase; the influence degree of amplitude/phase errors on the side-lobe level and beam direction would decrease as the number of the array channels increase; the influence of amplitude/phase errors on gain is independent on the number of the array channels. According to the adjustment problem of channel amplitude/phase errors in digital array application, as a complementary method of measuring the channel amplitude/phase errors, the principle, implementation methods and application conditions of internal-monitor and mid-field measurement are studied in detail. A calibration method of channel amplitude/phase errors is put forward. Simulation results show that after calibration, the channel amplitude/phase errors decrease from 2 dB and 20° to 0.4dB and 2° respectively,which meets the expected specification.关键词
数字阵列天线/幅相误差/内监测法/中场测量法/误差校准Key words
digital array antenna/amplitude/phase errors/internal-monitor/mid-field measurement/errors calibration分类
信息技术与安全科学引用本文复制引用
唐晓雷,张令坤,陈飞..通道幅相误差对数字阵列天线性能影响及校准[J].太赫兹科学与电子信息学报,2016,14(4):562-566,5.
