CAJ | 학술논문

为获得振幅和相位一致性较好的空间功率合成结构,对径向波导电磁场分布进行了理论分析,推导出径向波导内存在TM_(00)主模.根据TM_(00)波电磁场的轴向对称性,提出了径向波导功分器的简化电磁模型和等效电路.并由此研制出了性能良好的X波段159 W固态功率放大器.在整个X波段,无源合成网络的合成效率都大于88%.含单片微波集成电路芯片(MMIC)的整体合成固态功放合成效率在整个MMIC工作频率范围内(11.9～12.3 GHz)大于83%.
위획득진폭화상위일치성교호적공간공솔합성결구,대경향파도전자장분포진행료이론분석,추도출경향파도내존재TM_(00)주모.근거TM_(00)파전자장적축향대칭성,제출료경향파도공분기적간화전자모형화등효전로.병유차연제출료성능량호적X파단159 W고태공솔방대기.재정개X파단,무원합성망락적합성효솔도대우88%.함단편미파집성전로심편(MMIC)적정체합성고태공방합성효솔재정개MMIC공작빈솔범위내(11.9～12.3 GHz)대우83%.
In the paper, we analyzed the electromagnetic field distribution in radial waveguide to design an excellently spatial power combiner with identical magnitude and phase of signals from various ways. The result showed there was a TM_(00) mode in the radial waveguides. The simple model and the equivalent-circuit model for the power dividing/combining circuits had been developed by the symmetric field distribution of TM00, which enabled us to characterize the combining circuits and advance the design efficiency. A power amplifier module with a 159 W power output has been developed and its combining efficiency of bigger than 88% has been achieved in the passive combining system over the whole X band. The combining efficiency of the entire solid-state power amplifier with the monolithic-microwave integrated circuit(MMIC)was bigger than 83% over the MIMIC operation frequency range of 11.9～12.3GHz.