Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure
This paper presents the bandwidth improvement for dual-band power divider using complex isolation network while maintaining physical port separation. The conventional port-extended power dividers suffered from narrow system bandwidth. A rigorous analysis revealed that such problem was mainly due to...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/9/12/2192 |
| _version_ | 1797544191995150336 |
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| author | Tso-Jung Chang Yi-Fan Tsao Ting-Jui Huang Heng-Tung Hsu |
| author_facet | Tso-Jung Chang Yi-Fan Tsao Ting-Jui Huang Heng-Tung Hsu |
| author_sort | Tso-Jung Chang |
| collection | DOAJ |
| description | This paper presents the bandwidth improvement for dual-band power divider using complex isolation network while maintaining physical port separation. The conventional port-extended power dividers suffered from narrow system bandwidth. A rigorous analysis revealed that such problem was mainly due to the limited impedance bandwidth caused by the odd-mode bisected network. Moreover, the isolation bandwidth provided by the parallel L-C topology in the conventional approach was also limited. To overcome such technical issues, a serial L-C topology was proposed. Derivations of the impedance bandwidth through even- and odd-mode network analysis have been performed and optimal system bandwidth could be achieved when the reflection coefficients of the corresponding bisected networks exhibited minimum frequency dependence. Based on the theoretical analysis, simultaneous achievement of bandwidth broadening, size compactness, and physical port extension at both frequencies is possible with optimum combinations of the design parameters. The experimental results evidenced that other than the improvement in system bandwidth, the fabricated prototype featured low extra insertion loss, good isolation across the bands, and compactness in size while maintaining physical separation between the split ports compared with previously published works. |
| first_indexed | 2024-03-10T13:56:55Z |
| format | Article |
| id | doaj.art-328decfdfedb4fb7a0f14ceca5d16d38 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-10T13:56:55Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-328decfdfedb4fb7a0f14ceca5d16d382023-11-21T01:33:52ZengMDPI AGElectronics2079-92922020-12-01912219210.3390/electronics9122192Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation StructureTso-Jung Chang0Yi-Fan Tsao1Ting-Jui Huang2Heng-Tung Hsu3International College of Semiconductor Technology, National Chiao Tung University, Hsinchu 30010, TaiwanInternational College of Semiconductor Technology, National Chiao Tung University, Hsinchu 30010, TaiwanInternational College of Semiconductor Technology, National Chiao Tung University, Hsinchu 30010, TaiwanInternational College of Semiconductor Technology, National Chiao Tung University, Hsinchu 30010, TaiwanThis paper presents the bandwidth improvement for dual-band power divider using complex isolation network while maintaining physical port separation. The conventional port-extended power dividers suffered from narrow system bandwidth. A rigorous analysis revealed that such problem was mainly due to the limited impedance bandwidth caused by the odd-mode bisected network. Moreover, the isolation bandwidth provided by the parallel L-C topology in the conventional approach was also limited. To overcome such technical issues, a serial L-C topology was proposed. Derivations of the impedance bandwidth through even- and odd-mode network analysis have been performed and optimal system bandwidth could be achieved when the reflection coefficients of the corresponding bisected networks exhibited minimum frequency dependence. Based on the theoretical analysis, simultaneous achievement of bandwidth broadening, size compactness, and physical port extension at both frequencies is possible with optimum combinations of the design parameters. The experimental results evidenced that other than the improvement in system bandwidth, the fabricated prototype featured low extra insertion loss, good isolation across the bands, and compactness in size while maintaining physical separation between the split ports compared with previously published works.https://www.mdpi.com/2079-9292/9/12/2192system bandwidthphysical port separationdual-band |
| spellingShingle | Tso-Jung Chang Yi-Fan Tsao Ting-Jui Huang Heng-Tung Hsu Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure Electronics system bandwidth physical port separation dual-band |
| title | Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure |
| title_full | Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure |
| title_fullStr | Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure |
| title_full_unstemmed | Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure |
| title_short | Bandwidth Improvement of Conventional Dual-Band Power Divider Using Physical Port Separation Structure |
| title_sort | bandwidth improvement of conventional dual band power divider using physical port separation structure |
| topic | system bandwidth physical port separation dual-band |
| url | https://www.mdpi.com/2079-9292/9/12/2192 |
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