通信学报2017，Vol.38Issue(4)：1-7,7.DOI:10.11959/j.issn.1000-436x.2017078
星载功率动态分配网络幅相误差校准方法
Amplitude and phase errors calibration method in satellite-borne dynamic power allocation network
摘要
Abstract
For the mobile communication satellite each beam communication traffic distribution was not balanced,leading to differences in transmission power of downlink beam.The implementation architectures of dynamic power allocation network was given,which could allocate the transmitting beam power automatically according to the traffic demand,at the same time ensured the high efficiency of power amplifier.Because the performance of dynamic power allocation network was severely impaired by the mutual coupling among signals when amplitude/phase mismatch was existed,which led to a sharp drop in beam performance.A calibration method for the amplitude and phase errors was proposed.The decoupling of calibration signal was realized by using the cross-correlation orthogonal characteristic of the orthogonal zero-correlation zone (ZCZ) sequences in the zero correlation interval,and communication was free from calibration by reducing the transmit power for the excellent self-correlation characteristic of the ZCZ sequences.Performance simulation and far field test show that under the condition that the calibration signal power is less than the normal signal 10 dB,the amplitude error is less than 0.1 dB,the phase error is less than 0.3°,and the gain loss within the main lobe is less than 0.2 dB after calibration.关键词
卫星通信/功率动态分配/幅相误差校准/ZCZ序列Key words
satellite communication/dynamic power allocation/amplitude and phase errors calibration/ZCZ sequence分类
信息技术与安全科学引用本文复制引用
汤琦,蒋军敏,夏猛..星载功率动态分配网络幅相误差校准方法[J].通信学报,2017,38(4):1-7,7.基金项目
国家自然科学基金资助项目(No.61302133) （No.61302133）
陕西省教育厅科研计划基金资助项目(No.14JK1678)The National Natural Science Foundation of China (No.61302133),Special Research Program of Education Department of Shaanxi Provincial Government (No.14JK1678) （No.14JK1678）
