Introduction - If you have any usage issues, please Google them yourself
Microwave filters and integrated starting point is the choice of filter function, filtering function, the nature of the filter response. This paper presents a generalized Butterworth filter function, while retaining the advantages of their group delay at the same time, through the introduction of limited number of locations of transmission zeros, greatly improve the function of the band Butterworth characteristics, making it to adapt to modern communications microwave filter technology requirements, the actual design of microwave filters has a very good value.