超宽带高功率同轴旋转关节
High-power microwave ultra-wideband coaxial rotary joint
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摘要: 设计了一种高功率同轴旋转关节，通过一系列优化设计，解决了高压绝缘、高压气体动密封技术及承载等问题。分别对旋转关节的力学特性、环境温度适应性、瞬态脉冲传输效率及功率容量进行了实验研究。结果表明：关节的机械旋转及密封结构满足内压2 MPa的使用要求，所选材料在-15～50 ℃温度范围内能够正常工作；对于3 ns的瞬态脉冲，其动态电压传输效率为99.14%；可以稳定传输峰值功率50 GW、重复频率100 Hz、连续作用时间60 s的高功率超宽谱脉冲。该装置已成功应用于超宽带车载系统。Abstract: The paper developed a high-power microwave ultra-wideband coaxial rotary joint, and made some experimental study on its mechanical characteristics, temperature adaptability, transmission efficiency and power capability. The joint can work normally in the temperature range from -15 to 50 ℃. Fed in a pulse of 3 ns duration, it can realize a dynamic transmission efficiency of electric voltage of 99.14% with good stability. It can transmit transient pulses with ultra-wideband, peak power of 50 GW, repetition frequency of 100 Hz, and continuous action duration of 60 s. This rotary joint has been successfully applied to ultra-wideband vehicle-borne systems.
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Key words:
- ultra-wideband /
- high-power microwave /
- rotary joint /
- power capability /
- ambient temperature /
- transmission efficiency /
- peak power
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