振动永磁式机械天线的动力学特性研究
Dynamic characteristics of the mechanical antenna based on vibrating permanent magnet
张苗 1王积硕 1宁慧铭 2黄楷焱 3袁卫锋1
作者信息
- 1. 西南科技大学 制造科学与工程学院,四川 绵阳 621010;西南科技大学 造过程测试技术教育部重点实验室,四川 绵阳 621010
- 2. 重庆大学 航空航天学院,重庆 400044
- 3. 河北工业大学 机械工程学院,天津 300401
- 折叠
摘要
在传统的无线通信领域中,长波通信需要匹配大尺寸信号发射天线,制约了其在中小型平台上的应用.基于逆压电效应、振动理论和麦克斯韦方程组,提出并研制了一种三自由度折返梁结构的振动永磁式机械天线原理样机,建立了电-机械-电磁能理论模型,研究了机械天线的辐射影响因素及其频率调制技术.实验结果表明,通过激发机械天线原理样机的不同振动模态可对电磁波信号进行频率调制,从理论和技术角度为低频段信号的通信提供了新思路.
Abstract
In the traditional field of wireless communication,the application of long-wave communication is constrained on small and medium-sized platforms due to the requirement of large sized signal-transmitting antennas.This paper proposes and develops a three-degree-of-freedom cut-out beam structure of the vibration permanent magnet type mechanical antenna prototype based on the inverse piezoelectric effect,vibration theory,and Maxwell's equations.It establishes an electric-mechanical-electromagnetic energy theory model and investigates the radiation influencing factors of the mechanical antenna along with its frequency modulation technique.The experimental results validate that electromagnetic wave signals can be frequency-modulated by exciting different vibration modes of the mechanical antenna prototype.This research offers novel theoretical and technical perspectives for low-band signal communication.
关键词
机械天线/逆压电效应/多模态/频率调制Key words
mechanical antenna/inverse piezoelectric effect/multi-modal/frequency modulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据