基于里德堡原子的量子微波接收机具有超宽带、高灵敏度等显著优点,在雷达探测、信号侦察等电磁对抗领域具有巨大的应用潜力。经典的微波接收机采用金属天线作为传感器探头,而量子微波接收机的传感器探头是一个全介质的原子气室。文中对原子气室探头的雷达散射截面积(RCS)进行分析,通过将原子气室与经典的微带贴片天线进行仿真对比,展示了原子气室探头在2 GHz~18 GHz的宽频带内具有更低的RCS。此外,还对影响原子气室RCS的主要因素(结构、尺寸、相对介电常数等)进行仿真分析,给出了低RCS原子气室的参数选取基本原则。

Quantum microwave receivers based on Rydberg atoms have significant advantages such as ultra-broadband and high sensitivity, giving them great potential for applications in electromagnetic countermeasures such as radar detection and signal reception. The sensor probe of the quantum microwave receiver is a fully dielectric vapor cell while the classical microwave receiver uses a metal antenna as the sensor probe. In this paper, the radar cross section (RCS) of the vapor cell is analyzed. By comparing the vapor cell with the classical microstrip patch antenna, the vapor cell has the lower RCS characteristic from 2 GHz to 18 GHz. In addition, simulation analysis was conducted on the main factors affecting the RCS of atomic gas chambers (structure, size, relative dielectric constant, etc. ), and the basic principles for selecting parameters for low RCS atomic gas chambers were provided.

TN85

湖南省自然科学基金资助项目(2022JJ40556)