摘要
在卫星有效载荷系统中,多工器主要用于分离和合并射频信号,对整个系统性能具有实质性影响。分歧波导多工器以其性能佳、设计紧凑、易于工程实现等优点,在应用中十分常用。传统设计方法利用软件优化技术,优化波导枝节得到理想多工器响应,鲜有直接综合方法。介绍了一种负载为复阻抗的滤波器直接综合方法,并将其应用于分歧波导多工器综合设计。利用功率波归一化理论,计算滤波器网络端接复阻抗时的目标多项式,综合迭代各通道滤波器耦合矩阵,得到满足设计指标的多工器响应。以三工器为例列出综合步骤,最后通过仿真得到响应曲线,验证了方法的可行性。
In the satellite payload system,the multiplexer is mainly used to separate and combine the radio-frequency signals,which has a substantial impact on the performance of the whole system.With the good performance,compact design and easy implementation in the engineering,manifold multiplexer is commonly applied.In the traditional design method,software optimization technique is used,ideal response of the multiplexer is obtained by optimizing waveguide stub,the direct synthesis method is uncommon.A kind of direct synthesis method of filter with complex load is introduced,and applied in the design of manifold multiplexer.Through the power wave normalization theory,the objective polynomial of the filter network with complex load is calculated,then the coupling matrix of each channel filter is obtained,and the response of the multiplexer is obtained.The synthesis steps are listed by an example of triplexer.Finally,the response curves are obtained by simulation,which verified the feasibility of the method.
出处
《国外电子测量技术》
2016年第8期76-81,共6页
Foreign Electronic Measurement Technology
关键词
复阻抗
微波滤波器
分歧波导
多工器综合
complex load
microwave filter
manifold
multiplexer synthesis
