On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor
This article presents a Mid-section crossed dual-band Branch-Line Coupler (MBLC) with port extensions, along with a new design methodology for both complex and conventional structured branch-Line couplers. The proposed MBLC structure features a conventional branch-line coupler with a crossed line at...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10819344/ |
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| author | Ahammad Asif Iftekhar Omi Mohammad H. Maktoomi Mohammad A. Maktoomi Praveen K. Sekhar |
| author_facet | Ahammad Asif Iftekhar Omi Mohammad H. Maktoomi Mohammad A. Maktoomi Praveen K. Sekhar |
| author_sort | Ahammad |
| collection | DOAJ |
| description | This article presents a Mid-section crossed dual-band Branch-Line Coupler (MBLC) with port extensions, along with a new design methodology for both complex and conventional structured branch-Line couplers. The proposed MBLC structure features a conventional branch-line coupler with a crossed line at the center, as well as an L-section impedance matching network at all four ports, which facilitates analysis and design. A comprehensive theoretical analysis is performed to derive closed-form design equations for determining the design parameters of the coupler using a perturbation factor. The analysis demonstrates that the proposed MBLC can support a wide band ratio of up to 11, indicating a broad operating frequency range. To evaluate the performance of the proposed MBLC, two prototypes were fabricated on a 62 mil Rogers 4003C substrate, operating at 1 GHz and 2 GHz for equal and unequal power division cases. The simulated and measured results for both prototypes showed an excellent match, with a magnitude imbalance of less than 4% and a phase imbalance of less than 2%. Overall, the proposed MBLC with port extensions in conjunction with the new design methodology demonstrated promising results for the development of efficient and effective dual-band branch-line couplers. |
| format | Article |
| id | doaj-art-16b92340ecb84fa2a7dde661d7e0b54a |
| institution | Kabale University |
| issn | 2169-3536 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-16b92340ecb84fa2a7dde661d7e0b54a2025-01-10T00:01:43ZengIEEEIEEE Access2169-35362025-01-01134609462010.1109/ACCESS.2024.352459410819344On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor Ahammad0https://orcid.org/0000-0002-5869-8398Asif Iftekhar Omi1https://orcid.org/0000-0003-2784-6885Mohammad H. Maktoomi2https://orcid.org/0000-0002-5138-2358Mohammad A. Maktoomi3https://orcid.org/0000-0001-5344-3954Praveen K. Sekhar4https://orcid.org/0000-0002-4669-535XDepartment of Engineering and Computer Science, Washington State University Vancouver, Vancouver, WA, USADepartment of Electrical and Computer Engineering, University of Florida, Gainesville, FL, USADepartment of Electrical and Computer Engineering, University of California at Irvine, Irvine, CA, USADepartment of Electrical and Computer Engineering, Virginia Military Institute, Lexington, VA, USADepartment of Engineering and Computer Science, Washington State University Vancouver, Vancouver, WA, USAThis article presents a Mid-section crossed dual-band Branch-Line Coupler (MBLC) with port extensions, along with a new design methodology for both complex and conventional structured branch-Line couplers. The proposed MBLC structure features a conventional branch-line coupler with a crossed line at the center, as well as an L-section impedance matching network at all four ports, which facilitates analysis and design. A comprehensive theoretical analysis is performed to derive closed-form design equations for determining the design parameters of the coupler using a perturbation factor. The analysis demonstrates that the proposed MBLC can support a wide band ratio of up to 11, indicating a broad operating frequency range. To evaluate the performance of the proposed MBLC, two prototypes were fabricated on a 62 mil Rogers 4003C substrate, operating at 1 GHz and 2 GHz for equal and unequal power division cases. The simulated and measured results for both prototypes showed an excellent match, with a magnitude imbalance of less than 4% and a phase imbalance of less than 2%. Overall, the proposed MBLC with port extensions in conjunction with the new design methodology demonstrated promising results for the development of efficient and effective dual-band branch-line couplers.https://ieeexplore.ieee.org/document/10819344/Branch-line couplerdual-bandimpedance matchingmicrowave circuitspower divider |
| spellingShingle | Ahammad Asif Iftekhar Omi Mohammad H. Maktoomi Mohammad A. Maktoomi Praveen K. Sekhar On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor IEEE Access Branch-line coupler dual-band impedance matching microwave circuits power divider |
| title | On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor |
| title_full | On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor |
| title_fullStr | On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor |
| title_full_unstemmed | On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor |
| title_short | On the Design of a High Band-Ratio Mid-Section Crossed Dual-Band Branch-Line Coupler With Arbitrary Power Division Ratio Using Perturbation Factor |
| title_sort | on the design of a high band ratio mid section crossed dual band branch line coupler with arbitrary power division ratio using perturbation factor |
| topic | Branch-line coupler dual-band impedance matching microwave circuits power divider |
| url | https://ieeexplore.ieee.org/document/10819344/ |
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