循环极化3D打印的圆柱形DRA使用寄生式介电螺旋
Sebastian Diaz1, Marcos Diaz2, Eva Rajo-Iglesias3
1Escuela de Ingeniería Eléctrica, Pontificia Universidad Católica de Valparaíso, 2362804, Valparaiso, Chile.
Scientific reports
|July 22, 2023
概括
本研究介绍了一种用于5.8 GHz应用的3D打印介电共振器天线. 该天线使用寄生螺旋实现可调整的圆极化,适用于无人机系统.
科学领域:
- 电磁学和天线设计
- 用于射频应用的材料科学
- 增材制造用于射频组件的增材制造
背景情况:
- 循环偏振天线对于无人驾驶飞行器 (UAV) 等应用至关重要,以减轻偏振不匹配损失.
- 现有的循环偏振天线通常涉及复杂的结构或昂贵的材料,限制了它们的广泛采用.
- 3D打印为制造定制和具有成本效益的天线解决方案提供了一个有前途的途径.
研究的目的:
- 设计和演示一个3D打印的圆柱形介电共振器天线 (DRA),运行在5.8GHz.
- 通过整合寄生式介电螺旋来实现可调整的圆极化 (右手或左手).
- 调查螺旋设计参数对天线性能对无人机兼容性的影响.
主要方法:
- 设计了一个圆柱形的DRA,并与一种由高电容度介电材料制成的寄生螺旋相集成.
- 对螺旋体尺寸和介电常数进行了广泛的参数研究,以优化天线匹配和轴向比.
- 该天线是使用低损耗介电丝和标准3D打印机制造的.
主要成果:
- 3D打印的天线成功地通过调整螺旋的转向感应来实现圆极化 (右手和左手).
- 模拟和测量结果证实了整个操作频段的良好的阻抗匹配.
- 该天线呈现出适用于无人机应用的轴比带宽.
结论:
- 一种具有成本效益和可制造的3D打印循环极化DRA已经成功地被证明.
- 寄生式介电螺旋提供了一种有效的方法,可以在DRA中实现可调节的循环偏振.
- 拟议的天线设计显示了集成到需要可靠的射频通信的无人机平台的巨大潜力.
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