Design of the Bandpass Filter with Decidable Transmission Zeros and Miniaturized Wide Stopband Bandpass Filter
碩士 === 國立中正大學 === 電機工程研究所 === 107 === The main propose of this thesis divided into two parts. The first part is the bandpass filter with decidable transmission zeros in the third chapter. Based on the traditional second-order parallel coupled lines, we add the single-ended short-circuited coupled li...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2019
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| Online Access: | http://ndltd.ncl.edu.tw/handle/es2q93 |
| Summary: | 碩士 === 國立中正大學 === 電機工程研究所 === 107 === The main propose of this thesis divided into two parts. The first part is the bandpass filter with decidable transmission zeros in the third chapter. Based on the traditional second-order parallel coupled lines, we add the single-ended short-circuited coupled lines to generate a pair of transmission zeros on both sides of the passband, and the quarter-wavelength open transmiossion lines are used to improve harmonic suppression.
The second part is miniaturized wide stopband bandpass filter, starts from parallel coupled lines, we change the middle coupled line to symmetric short-circuit coupled line to reduce the size and harmonic suppression. Then add an open coupling line to generate a transmission zeros near the passband and harmonic suppression. Finally add open transmission lines to achieve wide stopband.
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