A GaAs LNA MMIC for a Correlation-Dicke Radiometer Internal-Body Temperature Sensor

被引：4
|
作者：
Lee, Jooeun [1 ]
Popovic, Zoya [1 ]
机构：
[1] Univ Colorado Boulder, Elect Comp & Energy Engn, Boulder, CO 80309 USA
来源：
2023 IEEE RADIO AND WIRELESS SYMPOSIUM, RWS | 2023年
基金：
美国国家科学基金会;
关键词：
Microwave radiometry; microwave amplifiers; low-noise amplifier; GaAs; microwave filters; LOW-NOISE AMPLIFIER;
D O I：
10.1109/RWS55624.2023.10046201
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A 3-stage low noise amplifier (LNA) of a correlation-Dicke radiometer for internal body thermometry at 1.4 GHz is presented. The MMIC LNA is designed using enhancement-mode 0.1um GaAs pseudomorphic high electron mobility transistor (pHEMT) technology. High gain and low noise figure (NF) is achieved with a 3-stage common-source structure with inductive degeneration. Interstage passive high-pass and low-pass filters improve the stability with minimal degradation of the NF. Two LNAs are placed side-by-side in a single 3mm x 3mm die for integration into a correlation radiometer circuit. The LNA is characterized and shows 45.2 dB of stable gain, and a 1.04 dB NF at 1.4 GHz, chosen as a quiet band suitable for biomedical sensing.
引用
收藏
页码：31 / 33
页数：3
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