Low-Cost Microwave Noise Source Exploiting a BJT with Junctions in Avalanche Regime

被引：0
|
作者：
Simoncini, Guendalina [1 ]
Alimenti, Federico [1 ]
机构：
[1] Univ Perugia, Dept Engn, Via G Duranti 93, I-06125 Perugia, Italy
来源：
2019 26TH IEEE INTERNATIONAL CONFERENCE ON ELECTRONICS, CIRCUITS AND SYSTEMS (ICECS) | 2019年
关键词：
solid-state microwave noise sources; avalanche breakdown; bipolar technologies; microwave radiometers;
D O I：
10.1109/icecs46596.2019.8964981
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：
In this work the feasibility of a low-cost microwave noise source compatible with commercial BiCMOS technologies is discussed. The proposed circuit exploits the avalanche noise generated by the base-emitter junction of a Bipolar Junction Transistor (BJT) in reverse breakdown. The collector terminal is not used and thus it is left open. The feasibility study is carried out exploiting the BFP640 device, a packaged BJT realized with a f(T) = 70 GHz process. A breakdown current of about 3 mA is obtained by reverse biasing the base-emitter junction at 4.5 V. In these conditions the Excess Noise Ratio (ENR) of the source is greater than 20 dB from 0.5 to 4.5 GHz.
引用
收藏
页码：322 / 325
页数：4
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