An Improved Design Method of UWB Linear Phase Bandpass Filter

摘要

Digital filters with linear phase responses, that is, constant group delay responses are needed in many applications for signal and image processing. In this paper a novel method is to improve the conventional filter anticipated aberrance design method and find a new design method of bandpass filter. It overcomes the question between the narrow band and linear phase in adapting the direct coupling capacitance or inductance. The Ultra-Wide Band and Linear Phase band-pass filter can be designed by using this new method. Finally it is effective by giving an example. Finally, the design example are presented to demonstrate the effectiveness of the proposed linear phase bandpass filter.