Using z-Transform Technique and Parallel Stubs To Design Narrow Band-pass Filter

• Main Authors: Pei-wen Wang, 王姵文
• Other Authors: Ching-wen Hsue
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/nd4mkt

碩士 === 國立臺灣科技大學 === 電子工程系 === 99 === In this thesis, we propose an approach to design and implement networks with capability of being microwave filters. Using z-domain technique and parallel two-section stubs to design a narrow bandpass filter. This method present a z-domain transform technique to design an arbitrarily pre-defined filter is implemented by using equal-length transmission lines. Parallel open stubs placed on both sides of the serial transmission line are used to induce a passband that forms a narrow bandpass filter. The filters are implemented with serial transmission lines, parallel open one-section stub, parallel short one-section stub, and parallel two-section stubs. The filter responses of defined by design can be implemented with the configuration of transmission lines for microwave application. The simulated results show that the passband is narrow, and the filter can suppress the higher order harmonics. Eventually, experimental results are presented to illustrate the validity of the two design method.