A New Class of Wideband Quadrature Coupled-Line Forward Couplers
This paper presents a new class of wideband quadrature coupled-line forward couplers making use of the unequal phase velocities of even- and odd-mode of coupled-lines in inhomogeneous media. The proposed approach allows for the design of wideband quadrature couplers with arbitrary coupling ratios. T...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Journal of Microwaves |
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| Online Access: | https://ieeexplore.ieee.org/document/10753283/ |
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| _version_ | 1841536211012812800 |
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| author | Henning Mextorf Winfried Schernus |
| author_facet | Henning Mextorf Winfried Schernus |
| author_sort | Henning Mextorf |
| collection | DOAJ |
| description | This paper presents a new class of wideband quadrature coupled-line forward couplers making use of the unequal phase velocities of even- and odd-mode of coupled-lines in inhomogeneous media. The proposed approach allows for the design of wideband quadrature couplers with arbitrary coupling ratios. The fundamental structure composed of two sections of strongly coupled lines and a section of ideally uncoupled lines is systematically analyzed and closed form equations for the synthesis of the design parameters are presented where possible. Multisection couplers designed by cascading the fundamental structure are investigated. They provide more design flexibility and an enhanced operating bandwidth. Two experimental prototypes exhibiting wide operating bandwidth up to 39% and flat magnitude and phase response are presented. |
| format | Article |
| id | doaj-art-dbe30f63312f4c6bb168ac3b31c8ada6 |
| institution | Kabale University |
| issn | 2692-8388 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Microwaves |
| spelling | doaj-art-dbe30f63312f4c6bb168ac3b31c8ada62025-01-15T00:04:08ZengIEEEIEEE Journal of Microwaves2692-83882025-01-015121522310.1109/JMW.2024.348013110753283A New Class of Wideband Quadrature Coupled-Line Forward CouplersHenning Mextorf0https://orcid.org/0000-0001-8995-5927Winfried Schernus1https://orcid.org/0000-0002-7475-9744West Coast University of Applied Sciences, Heide, GermanyWest Coast University of Applied Sciences, Heide, GermanyThis paper presents a new class of wideband quadrature coupled-line forward couplers making use of the unequal phase velocities of even- and odd-mode of coupled-lines in inhomogeneous media. The proposed approach allows for the design of wideband quadrature couplers with arbitrary coupling ratios. The fundamental structure composed of two sections of strongly coupled lines and a section of ideally uncoupled lines is systematically analyzed and closed form equations for the synthesis of the design parameters are presented where possible. Multisection couplers designed by cascading the fundamental structure are investigated. They provide more design flexibility and an enhanced operating bandwidth. Two experimental prototypes exhibiting wide operating bandwidth up to 39% and flat magnitude and phase response are presented.https://ieeexplore.ieee.org/document/10753283/Couplersdirectional couplersquadrature couplers |
| spellingShingle | Henning Mextorf Winfried Schernus A New Class of Wideband Quadrature Coupled-Line Forward Couplers IEEE Journal of Microwaves Couplers directional couplers quadrature couplers |
| title | A New Class of Wideband Quadrature Coupled-Line Forward Couplers |
| title_full | A New Class of Wideband Quadrature Coupled-Line Forward Couplers |
| title_fullStr | A New Class of Wideband Quadrature Coupled-Line Forward Couplers |
| title_full_unstemmed | A New Class of Wideband Quadrature Coupled-Line Forward Couplers |
| title_short | A New Class of Wideband Quadrature Coupled-Line Forward Couplers |
| title_sort | new class of wideband quadrature coupled line forward couplers |
| topic | Couplers directional couplers quadrature couplers |
| url | https://ieeexplore.ieee.org/document/10753283/ |
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