⚡ 本页包含 AI 生成的分析内容,仅供参考
本文提出了一种基于65nm CMOS工艺的100GHz无Dicke开关辐射计,通过消除传统Dicke辐射计中参考负载切换的时间浪费,实现了100%的时间效率,同时达到0.43K的噪声等效温差(NEΔT)。该设计适用于地球科学遥感、被动成像等应用。
Jet Propulsion Laboratory, Pasadena, CA 1 2 Silicon based mm-Wave radiometers for sensing, passive imaging, and even biomedical imaging have become an emerging area with many excellent systems demonstrated up to W-band [1-5]. Beyond these emerging areas, mm-Wave radiometers are also a major tool in Earth science (both airborne and space-borne) providing overhead soundings for capturing climate conditions and supporting the study of extreme weather events, moisture cycles, and cloud formation by way of collecting atmospheric absorption measurements that can be both altitude and pressure resolved. One common feature shared by these silicon radiometers is they include Dicke switches to cancel the multiplicative noises (abbreviated “m-noises” by astronomers), which are slow time-varying changes in gain that strongly affect a radiometer sensitivity. Unlike additive noises, multiplicative noises cannot be
A.J. Tang1,2, Yangyho Kim2, Qun Jane Gu1
University of California, Davis, CA,