A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique
This article presents a flexible miniaturized wideband branch-line coupler printed on a biodegradable paper substrate. The proposed design consists of a combination of series transmission lines and shunt open-stubs along with the meandering technique as a substitute to the conventional quarter-wavel...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2021-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9627912/ |
| _version_ | 1829489671765229568 |
|---|---|
| author | Kanaparthi V. Phani Kumar Abdullah J. Alazemi |
| author_facet | Kanaparthi V. Phani Kumar Abdullah J. Alazemi |
| author_sort | Kanaparthi V. Phani Kumar |
| collection | DOAJ |
| description | This article presents a flexible miniaturized wideband branch-line coupler printed on a biodegradable paper substrate. The proposed design consists of a combination of series transmission lines and shunt open-stubs along with the meandering technique as a substitute to the conventional quarter-wavelength transmission line (QWTL). The horizontal QWTLs of the traditional three-section branch-line coupler are replaced by a proposed equivalent structure, and the vertical QWTLs have been meandered. The developed prototype occupies an area of <inline-formula> <tex-math notation="LaTeX">$0.04~\lambda _{\mathrm {g}}^{2}$ </tex-math></inline-formula>, and has been tested where the measurements agree well with the simulations, and the obtained fractional bandwidth is greater than 60% at 0.9 GHz operating frequency. In addition, for flexibility analysis, the prototype is bent in different directions, and the tested results are obtained and compared to the flat design. The proposed device can be used in antenna feeding networks, microwave and conformal applications that require both compact size and frequency wideband response simultaneously. |
| first_indexed | 2024-12-15T00:10:11Z |
| format | Article |
| id | doaj.art-afe3671997444382b1257adecccde7a9 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-15T00:10:11Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-afe3671997444382b1257adecccde7a92022-12-21T22:42:36ZengIEEEIEEE Access2169-35362021-01-01915824115824610.1109/ACCESS.2021.31312919627912A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering TechniqueKanaparthi V. Phani Kumar0https://orcid.org/0000-0003-4708-0872Abdullah J. Alazemi1https://orcid.org/0000-0002-4567-4127Department of Electronics and Communication Engineering, College of Engineering and Technology, SRM Institute of Science and Technology, Tamil Nadu, Kattankulathur, IndiaDepartment of Electrical Engineering, Faculty of Engineering and Petroleum, Kuwait University, Safat, KuwaitThis article presents a flexible miniaturized wideband branch-line coupler printed on a biodegradable paper substrate. The proposed design consists of a combination of series transmission lines and shunt open-stubs along with the meandering technique as a substitute to the conventional quarter-wavelength transmission line (QWTL). The horizontal QWTLs of the traditional three-section branch-line coupler are replaced by a proposed equivalent structure, and the vertical QWTLs have been meandered. The developed prototype occupies an area of <inline-formula> <tex-math notation="LaTeX">$0.04~\lambda _{\mathrm {g}}^{2}$ </tex-math></inline-formula>, and has been tested where the measurements agree well with the simulations, and the obtained fractional bandwidth is greater than 60% at 0.9 GHz operating frequency. In addition, for flexibility analysis, the prototype is bent in different directions, and the tested results are obtained and compared to the flat design. The proposed device can be used in antenna feeding networks, microwave and conformal applications that require both compact size and frequency wideband response simultaneously.https://ieeexplore.ieee.org/document/9627912/Branch-line couplerflexiblemeanderingopen-stubwideband |
| spellingShingle | Kanaparthi V. Phani Kumar Abdullah J. Alazemi A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique IEEE Access Branch-line coupler flexible meandering open-stub wideband |
| title | A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique |
| title_full | A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique |
| title_fullStr | A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique |
| title_full_unstemmed | A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique |
| title_short | A Flexible Miniaturized Wideband Branch-Line Coupler Using Shunt Open-Stubs and Meandering Technique |
| title_sort | flexible miniaturized wideband branch line coupler using shunt open stubs and meandering technique |
| topic | Branch-line coupler flexible meandering open-stub wideband |
| url | https://ieeexplore.ieee.org/document/9627912/ |
| work_keys_str_mv | AT kanaparthivphanikumar aflexibleminiaturizedwidebandbranchlinecouplerusingshuntopenstubsandmeanderingtechnique AT abdullahjalazemi aflexibleminiaturizedwidebandbranchlinecouplerusingshuntopenstubsandmeanderingtechnique AT kanaparthivphanikumar flexibleminiaturizedwidebandbranchlinecouplerusingshuntopenstubsandmeanderingtechnique AT abdullahjalazemi flexibleminiaturizedwidebandbranchlinecouplerusingshuntopenstubsandmeanderingtechnique |