Optimization design of passive filter's phase-frequency characteristic

In order to solve contradiction between the filter amplitude-frequency and the phase-frequency straightness, this paper proposes a filter's optimal design method. Based on the circuit designed by network synthesis method, the phase-frequency approach to a straight line using a least square meth...

Full description

Saved in:
Bibliographic Details
Main Authors: Hongmei Ma, Peng Li, Weining Xue
Format: Conference Proceeding
Language:English
Subjects:
Circuits
Design methodology
Design optimization
filter
Frequency
Information filtering
Information filters
Network synthesis
optimization design
Optimization methods
Passive filters
phase-frequency
Voltage
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to solve contradiction between the filter amplitude-frequency and the phase-frequency straightness, this paper proposes a filter's optimal design method. Based on the circuit designed by network synthesis method, the phase-frequency approach to a straight line using a least square method. Then optimize the circuit again by unconstrained optimization method. The simulation result indicates that this method can not only increase the filter the attenuation in stopband, but also the group delay is 12% of the total before optimized in passband, and the optimal design method is superior to the network synthesis method.
DOI:10.1109/ICCOMTA.2009.5349101