毫米波雨雾颗粒环境传输测量系统

Millimeter wave transmission measurement system in particulate environments

摘要:

毫米波在颗粒环境中传输特性是毫米波通信技术的重要基础性问题。为探索毫米波传输在可控颗粒环境下的测量，基于准光学理论设计了双反射面高斯波束传输系统。该系统包含一对多张角喇叭和两个椭球聚焦反射面。多张角喇叭用于产生高斯度大于96%的高斯波束；聚焦反射面将发射波束重新聚焦，使得输出波束参数与发射波束参数相同。此外，基于矢量网络分析仪加扩频模块的实验方案，对准光传输系统在75~110 GHz频率范围进行了测试，得到该频率范围内整个系统的损耗。测试结果表明系统本身的损耗仅有2~4 dB，表现出良好的传输特性。基于本系统的初步喷水实验为可控颗粒环境下传输测量奠定了基础。

Abstract:

Millimeter wave transmission in particulate environment is a fundamental topic in the communication community. In order to make controllable measurement, a dual-reflector Gaussian beam transmission system is designed based on the quasi-optical theory. This system consists of a pair of multi-flare angle horns, and two ellipsoidal focusing reflectors. The multi-flare angle horns are employed to generate Gaussian beam with 96% Gaussianity, and the focusing reflectors transform the incident beam to be identical to the input beam. In addition, the measurement on the system loss is conducted in the range of 75~110 GHz by using a vector network analyzer and extenders. It is found that the system loss is in the range of 2~4 dB, showing a satisfactory transmission performance. The preliminary study on water-spraying paves the way for future controllable measurement.