【摘要】 针对分布参数滤波网络存在寄生通带问题 ,本文提出一种新的微带带通滤波电路 .对其滤波特性进行了理论分析 ,给出了电路的结构形式和有关计算公式 .它由特定组合传输线与平行耦合微带线单元级联构成 ,结构简单 .计算及实验结果表明这种新的滤波电路具有良好的谐波抑制特性 .这种滤波电路用在微波振荡器或放大器输出端 ,可以有效地抑制谐波输出更多还原

【Abstract】 In view of parasitic passband in the filtering networks composed of distributed elements,a novel circuit of microstrip bandpass filters is presented in this paper.The filtering porperties of the filter are analyzed.The configurations of the filter and related equations are also presented.The circuit is composed of the parallel coupled microstrip lines and the specific combined transmission lines by cascaded connection,and the sturcture is simple.Theoretical results and experimental results indicate that the novel circuits of microstrip bandpass filters has good performance in harmonic suppression.Using this new structure as output filters in the microwave oscillators or amplifiers,the performance of the system in harmonic suppression will be improved.更多还原