| 摘要: |
| 针对网络综合方法不能直接对滤波器的群时延和驻波比同时设计的问题，提出了一
种滤波器的幅频特性、群时延和驻波比特性同时优化的设计方法，即在网络综合法设计滤波
电路的基础上，利用无约束优化方法对群时延和驻波比同时优化，降低通带内群时延波动和
驻波比的最大值。从仿真结果可以看出，优化后滤波器幅频特性接近算术对称，群时延波动
最大值17.337 ns，驻波比最大值仅为1.455 0。 |
| 关键词: 模拟滤波器 幅频特性 群时延 驻波比 算术对称 优化设计 |
| DOI： |
|
| 基金项目: |
|
| Optimization design of analog filter′s group-delay and VSWR |
| LI Peng,ZHANG Dan,MA Hong-mei |
| () |
| Abstract: |
| For the problem that an analog filter′s group-delay and voltage standi
ng-wave ratio (VSWR) can not be designed simultaneously by the network synthesis
method，an optimal design method for amplitude-frequency characteristic,group
-delay and VSWR is proposed.
Based on design of filter circuit by network synthesis method,the unconstrained
optimiz
ation method is used to opitmize the group-delay
and the VSWR simult
aneously to reduce the group-delay ripple and the max value of VSWR. The simulat
ion results show that the proposed method can get arithmetic symmetrical amplitu
de-frequency, the max value of VSWR is only 1.455 0 and the group-delay
ripple is 17.337 ns in pass-band. |
| Key words: analog filter amplitude-frequency characteristic group-delay VSWR arithmetic
symmetry optimization design |
《电讯技术》编辑部 