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用于高频应用的低配置双频反射天线
1School of Electronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 611731, China.
Sensors (Basel, Switzerland)
|July 14, 2023
概括
这项研究介绍了一种新型的双频反射天线,能够在高频率下工作. 创新的设计实现了低形象和高收益,通过制造的原型来验证.
科学领域:
- 电磁学和应用电物理学
- 天线理论和设计.
- 微波和毫米波工程 微波和毫米波工程
背景情况:
- 反射天线对于高收益应用至关重要.
- 在单个低形天线中实现双带运行提出了重大设计挑战.
- 现有的设计往往会在性能或复杂性上妥协,以实现多频段功能.
研究的目的:
- 推出一种具有双频辐射能力的新型高收益低度反射天线.
- 使用单个天线结构,使两种不同的频段 (29.432.4 GHz和142174 GHz) 能够运行.
- 为了证明焦点与直径 (F/D) 的比率较低,以提高实用性.
主要方法:
- 开发了一种复合式双带料,结合了圆形波导和同轴喇.
- 采用双反射器系统,使用金属圆形表面作为上波段的次反射器和下波段的平面反射阵列.
- 进行了电磁模拟,以优化设计和预测性能.
主要成果:
- 该天线在29.432.4 GHz时实现了10%的相对2dB增强带宽,在142174 GHz时达到20%.
- 模拟效率在29.432.4 GHz为59.0%,在142174 GHz为42.9%.
- 一个规模化的原型验证了模拟结果,显示了VSWR,辐射模式和收益的良好一致性.
结论:
- 拟议的双反射天线设计成功实现了高收益,低形和双频段操作.
- 创新的料和双反射器配置对于多频段性能是有效的.
- 经过验证的设计为需要高频宽带或多频带通信的应用提供了有前途的解决方案.
相关概念视频
01:24Characteristics of Series Resonant Circuit
282
Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
282
01:23Parallel Resonance
233
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
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