摘要
设计了一种用于低噪声放大器后端的微带增益均衡器,通过对其结构进行理论分析、设计、仿真及加工调试,完全实现了所需的目标幅频曲线,改善了输出增益平坦度。根据测试结果,该微带均衡器工作于2 GHz-3 GHz频带内的幅度在2 GHz频点最大衰减3.5 dB,3 GHz频点最小衰减0.5dB,并随频率呈递增特性,且输入输出回波损耗超过14 dB。
The paper presents one of microstrip gain equalizer used in back-end of a low noise amplifier. The microstrip equalizer exhibits desired amplitude frequence curve which approach to goal curve by theory analysis, design, simulation ,fabrication and debug. It improve output gain flatness perfectly. According to the measured result, the microstrip equalizer work at bandwidth from 2 GHz to 3 GHz which have the maximum 3.5 dB amplitude degradation at 2 GHz and the minimum 0.5 dB amplitude degradation at 3 GHz. The amplitude increase progressively with rised frequency in the bandwidth. Furthermore, the return loss is more than 14dB.
出处
《电子技术应用》
北大核心
2012年第9期122-124,共3页
Application of Electronic Technique
基金
教育部新世纪人才项目(NCET-10-0295)
关键词
幅度均衡器
微带谐振分支节
吸波电阻
陷波单元
amplitude equalizer
microstrip resonance branch section
wave absorption resistor
wave trap
