一个超宽带带导体支持的共平面波导,具有正弦边缘
Tingting Xie1, Pengwei Gong1, Xiaohe Cheng2
1Beijing Institute of Radio Metrology and Measurement, Beijing 100854, China.
Sensors (Basel, Switzerland)
|October 26, 2024
概括
一种具有正弦边的新型导体支持的共平面波导 (CBCPW-SE) 在广泛的频率范围内提供恒定的50 Ω阻抗. 这条新的传输线 (TL) 在高频应用中最大限度地减少信号损失和分散.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 微波工程 微波工程
背景情况:
- 高频传输线 (TL) 对于毫米波和太赫兹 (THz) 应用至关重要.
- 传统的TL通常需要复杂的阻抗匹配网络,增加系统复杂性和损失.
- 保持信号完整性和尽量减少分散是这些频率的关键挑战.
研究的目的:
- 提出和描述一种具有正弦边缘 (CBCPW-SE) 的新型导体支持的共平面波导.
- 为了证明CBCPW-SE在广泛的频谱中保持50 Ω阻抗的能力.
- 在插入损失,反射系数和组速度分散 (GVD) 方面评估CBCPW-SE的性能.
主要方法:
- 设计和制造CBCPW-SE输电线路.
- 使用从10 MHz到100 GHz的S参数测量进行实验性表征.
- 分析插入损失,反射系数,群体延迟和GVD.
主要成果:
- 制造的CBCPW-SE保持了恒定的50 Ω输入阻抗,没有阻抗匹配过渡.
- 测量的插入损失低于0.1dB/mm,反射系数在测试频率范围内的反射系数优于-10dB.
- 观察到最小的信号退化,S21 (dB) < -5 dB在50毫米的截面和接近零的GVD.
结论:
- 由于其固有的50 Ω阻抗和低损耗,CBCPW-SE是毫米波和THz频率的有前途的传输线.
- 该设计通过消除对阻抗匹配电路的需求来简化高频系统.
- 最小的GVD确保了高速数据传输的优良信号完整性.
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