Synthesis of Tri-Band Bandpass Filter Based on Frequency Transformation Using Tangent Function

In this paper, a tri-band bandpass filter design method was proposed. It is a coupling matrix synthesis method which provides a high freedom for setting zeros, order and bandwidth of each pass band for the first time. By mapping the single-band low pass prototype to the tri-band bandpass prototype u...

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Bibliographic Details
Published in2020 IEEE MTT-S International Wireless Symposium (IWS) pp. 1 - 3
Main Authors Wu, Ri-Han, Tang, Xiao-Hong, Liu, Yong, Luo, Ming, Li, Zhiyou, Wu, Yue-Han
Format Conference Proceeding
LanguageEnglish
Published IEEE 20.09.2020
Subjects
Band-pass filters
bandpass filter
cross-coupled
Filtering theory
Frequency synthesizers
frequency transformation
Frequency-domain analysis
Matlab
Prototypes
Tri-band
Wireless communication
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Summary:In this paper, a tri-band bandpass filter design method was proposed. It is a coupling matrix synthesis method which provides a high freedom for setting zeros, order and bandwidth of each pass band for the first time. By mapping the single-band low pass prototype to the tri-band bandpass prototype using tangent function and then mapping the tri-band bandpass prototype to its practical frequency domain, a tri-band bandpass filter design can be realized finally. To validate the proposed method, a design in MATLAB was given at the end.
DOI:10.1109/IWS49314.2020.9360060