Analysis Method for a Multi-Section Rat-Race Hybrid Coupler Using Microstrip Lines
An analysis method for a multi-section rat-race hybrid coupler with a large bandwidth is presented. The proposed coupler has only a few additional microstrip lines compared to a single-section coupler. A complete analysis method is derived and validated through even- and odd-mode analysis, consideri...
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| Format: | Article |
| Language: | English |
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The Korean Institute of Electromagnetic Engineering and Science
2022-03-01
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| Series: | Journal of Electromagnetic Engineering and Science |
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| Online Access: | http://jees.kr/upload/pdf/jees-2022-2-r-65.pdf |
| Summary: | An analysis method for a multi-section rat-race hybrid coupler with a large bandwidth is presented. The proposed coupler has only a few additional microstrip lines compared to a single-section coupler. A complete analysis method is derived and validated through even- and odd-mode analysis, considering the asymmetric structure of the proposed coupler. To demonstrate the effectiveness of the design, two two-section rat-race couplers with an operating frequency of 2 GHz and splitting ratios of 1:1 and 1:2 were simulated and fabricated. Measurements of the fabricated couplers yielded results in good agreement with the simulation results, demonstrating wide bandwidth characteristics. |
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| ISSN: | 2671-7255 2671-7263 |