RCS Analysis of the Vapor Cell Probe for Quantum Micro wave Receivers
Quantum microwave receivers based on Rydberg atoms have significant advantages such as ultra-broadband and high sen-sitivity,giving them great potential for applications in electromagnetic countermeasures such as radar detection and signal recep-tion.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.
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