A Dual-Band Branch-Line Coupler with Ultra-Wideband Harmonic Suppression
A dual-band branch-line coupler with ultra-wideband harmonic suppression is proposed in this paper. The conventional quarter-wavelength transmission lines are replaced with π-shaped lines to achieve a dual band. In addition, ultra-wideband harmonic suppression is obtained by the frequency-selecting...
| Principais autores: | , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
The Korean Institute of Electromagnetic Engineering and Science
2023-01-01
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| coleção: | Journal of Electromagnetic Engineering and Science |
| Assuntos: | |
| Acesso em linha: | https://jees.kr/upload/pdf/jees-2023-1-r-144.pdf |
| Resumo: | A dual-band branch-line coupler with ultra-wideband harmonic suppression is proposed in this paper. The conventional quarter-wavelength transmission lines are replaced with π-shaped lines to achieve a dual band. In addition, ultra-wideband harmonic suppression is obtained by the frequency-selecting coupling structure (FSCS) providing three transmission zeros. The two operating frequencies are 0.9 GHz and 2.0 GHz, and the corresponding −10 dB bandwidth at 0.9 GHz and 2.0 GHz is 18.9% and 10.5%, respectively. A wide harmonic suppression band is generated from 3.7 GHz to 8.3 GHz. The simulation and measurement results are in good agreement. |
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| ISSN: | 2671-7255 2671-7263 |