A Microwave Broadband Triplexer Used in Satellite Television Systems
碩士 === 國立臺北大學 === 通訊工程研究所 === 103 === This study presents the plane type triplexer. It is mainly designed at 1.2/1.9/2.75 GHz. This triplexer is applied on commercial set-top box (STB). We divide signal by triplexer after receiving RF signal by antenna. We capture signal which is in the frequency ba...
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ndltd-TW-103NTPU06500072016-08-19T04:10:21Z http://ndltd.ncl.edu.tw/handle/60742647067935477119 A Microwave Broadband Triplexer Used in Satellite Television Systems 應用於衛星電視系統之微波寬頻三工器 Wei-Ting Lin 林威廷 碩士 國立臺北大學 通訊工程研究所 103 This study presents the plane type triplexer. It is mainly designed at 1.2/1.9/2.75 GHz. This triplexer is applied on commercial set-top box (STB). We divide signal by triplexer after receiving RF signal by antenna. We capture signal which is in the frequency band we need, then downgrade the frequency to back-end to do signal process. It’s an important part in whole system and the isolation of each two bands is important too. The triplexer has one common port and three output ports. Using FR-4 printed circuit board(PCB) to fabricate triplexer. The size is 47.5mm × 23mm and thickness is 0.8mm. The research divides into two parts. The first part is circuit design and confirming filter structure. We try and analyze the common filter types: Butterworth and Chebyshev. Finally, we choose Chebyshev type II as the main structure. Because it has a flatter pass band and better group delay. Based on a traditional band pass filter model, we transform a high pass filter series a low pass filter. We design and simulate the three different band’s BPFs in this way. The second part is PCB layout, circuit tuning and implement result. We used layout software “P-CAD2006” to do PCB layout. This study presents the plane type triplexer. The simulated results and measurement of the filters are not similar. We propose a better way to improve and fabricate it. Tiku Yu 余帝穀 2015 學位論文 ; thesis 66 en_US |
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碩士 === 國立臺北大學 === 通訊工程研究所 === 103 === This study presents the plane type triplexer. It is mainly designed at 1.2/1.9/2.75 GHz. This triplexer is applied on commercial set-top box (STB). We divide signal by triplexer after receiving RF signal by antenna. We capture signal which is in the frequency band we need, then downgrade the frequency to back-end to do signal process. It’s an important part in whole system and the isolation of each two bands is important too. The triplexer has one common port and three output ports. Using FR-4 printed circuit board(PCB) to fabricate triplexer. The size is 47.5mm × 23mm and thickness is 0.8mm. The research divides into two parts.
The first part is circuit design and confirming filter structure. We try and analyze the common filter types: Butterworth and Chebyshev. Finally, we choose Chebyshev type II as the main structure. Because it has a flatter pass band and better group delay. Based on a traditional band pass filter model, we transform a high pass filter series a low pass filter. We design and simulate the three different band’s BPFs in this way.
The second part is PCB layout, circuit tuning and implement result. We used layout software “P-CAD2006” to do PCB layout.
This study presents the plane type triplexer. The simulated results and measurement of the filters are not similar. We propose a better way to improve and fabricate it.
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author2 |
Tiku Yu |
author_facet |
Tiku Yu Wei-Ting Lin 林威廷 |
author |
Wei-Ting Lin 林威廷 |
spellingShingle |
Wei-Ting Lin 林威廷 A Microwave Broadband Triplexer Used in Satellite Television Systems |
author_sort |
Wei-Ting Lin |
title |
A Microwave Broadband Triplexer Used in Satellite Television Systems |
title_short |
A Microwave Broadband Triplexer Used in Satellite Television Systems |
title_full |
A Microwave Broadband Triplexer Used in Satellite Television Systems |
title_fullStr |
A Microwave Broadband Triplexer Used in Satellite Television Systems |
title_full_unstemmed |
A Microwave Broadband Triplexer Used in Satellite Television Systems |
title_sort |
microwave broadband triplexer used in satellite television systems |
publishDate |
2015 |
url |
http://ndltd.ncl.edu.tw/handle/60742647067935477119 |
work_keys_str_mv |
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