Design of General Chebyshev Bandpass Filters Using The Coupling Matrix Synthesis Methods
Date Issued
2007
Date
2007
Author(s)
Lin, Chi-Hui
DOI
zh-TW
Abstract
In this thesis, the general coupling matrix synthesis methods are employed to synthesize the required coupling matrix for the specified Chebyshev filtering functions. In addition to have equal-ripple response in the passband, N-degree Chebyshev functions can have at most N-2 prescribed transmission zeros to improve the selectivity or group delay. Three fourth-order filters and one sixth-order filter, which have various transmission zeros, are designed and fabricated, and the measurement results are also included for verifying the accuracy of the synthesis method. Moreover, a design procedure for the fourth-pole filter with asymmetric filtering response is presented, in which multilayer configuration and aperture-coupled coupling are utilized to realize the filter response.
Subjects
微帶線濾波器
帶通濾波器
交錯耦合
microstrip filter
bandpass filter
cross coupling
Type
thesis
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