Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines
In the paper, a compact wideband filtering power divider (FPD) with high frequency selectivity is presented, which is merely based on the four-coupled-lines (FCLs) and isolated resistors. Since the FCL with diagonal short-circuited of input port has filtering response, an FPD without adding extra re...
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| Format: | Article |
| Language: | English |
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Spolecnost pro radioelektronicke inzenyrstvi
2025-04-01
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| Series: | Radioengineering |
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| Online Access: | https://www.radioeng.cz/fulltexts/2025/25_01_0001_0008.pdf |
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| author | Y. Zhang H. M. Liu S. Li Z. B. Wang S. J. Fang |
| author_facet | Y. Zhang H. M. Liu S. Li Z. B. Wang S. J. Fang |
| author_sort | Y. Zhang |
| collection | DOAJ |
| description | In the paper, a compact wideband filtering power divider (FPD) with high frequency selectivity is presented, which is merely based on the four-coupled-lines (FCLs) and isolated resistors. Since the FCL with diagonal short-circuited of input port has filtering response, an FPD without adding extra resonators can be easily realized. Further, two types of FCLs are cascaded as multi-mode resonators for bandwidth enhancement, and two resistors are added for isolation improvement. For validation, a 3-dB prototype with a size of 0.4λg × 0.07λg is implemented. Measurements show that the proposed FPD has a fractional bandwidth of more than 80%. Besides, the stopband rejection is over 35 dB with a rectangle coefficient (|BW20dB/BW3dB|) of 1.28, which indicates high frequency selectivity. |
| format | Article |
| id | doaj-art-8a9cf3dd447746fba855b2be0dec030b |
| institution | OA Journals |
| issn | 1210-2512 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Spolecnost pro radioelektronicke inzenyrstvi |
| record_format | Article |
| series | Radioengineering |
| spelling | doaj-art-8a9cf3dd447746fba855b2be0dec030b2025-08-20T02:27:57ZengSpolecnost pro radioelektronicke inzenyrstviRadioengineering1210-25122025-04-0134118Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-LinesY. ZhangH. M. LiuS. LiZ. B. WangS. J. FangIn the paper, a compact wideband filtering power divider (FPD) with high frequency selectivity is presented, which is merely based on the four-coupled-lines (FCLs) and isolated resistors. Since the FCL with diagonal short-circuited of input port has filtering response, an FPD without adding extra resonators can be easily realized. Further, two types of FCLs are cascaded as multi-mode resonators for bandwidth enhancement, and two resistors are added for isolation improvement. For validation, a 3-dB prototype with a size of 0.4λg × 0.07λg is implemented. Measurements show that the proposed FPD has a fractional bandwidth of more than 80%. Besides, the stopband rejection is over 35 dB with a rectangle coefficient (|BW20dB/BW3dB|) of 1.28, which indicates high frequency selectivity.https://www.radioeng.cz/fulltexts/2025/25_01_0001_0008.pdffiltering power divider (fpd)high selectivityfour-coupled-line (fcl)widebandminiaturization |
| spellingShingle | Y. Zhang H. M. Liu S. Li Z. B. Wang S. J. Fang Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines Radioengineering filtering power divider (fpd) high selectivity four-coupled-line (fcl) wideband miniaturization |
| title | Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines |
| title_full | Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines |
| title_fullStr | Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines |
| title_full_unstemmed | Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines |
| title_short | Compact Wideband High-Selectivity Filtering Power Divider Using Four-Coupled-Lines |
| title_sort | compact wideband high selectivity filtering power divider using four coupled lines |
| topic | filtering power divider (fpd) high selectivity four-coupled-line (fcl) wideband miniaturization |
| url | https://www.radioeng.cz/fulltexts/2025/25_01_0001_0008.pdf |
| work_keys_str_mv | AT yzhang compactwidebandhighselectivityfilteringpowerdividerusingfourcoupledlines AT hmliu compactwidebandhighselectivityfilteringpowerdividerusingfourcoupledlines AT sli compactwidebandhighselectivityfilteringpowerdividerusingfourcoupledlines AT zbwang compactwidebandhighselectivityfilteringpowerdividerusingfourcoupledlines AT sjfang compactwidebandhighselectivityfilteringpowerdividerusingfourcoupledlines |