1/f noise optimum for field-effect transistors in single-ended resistive mixers

被引:0
|
作者
Margraf, M [1 ]
Boeck, G [1 ]
机构
[1] Berlin Univ Technol, Microwave Engn Grp, D-10587 Berlin, Germany
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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
The low-frequency noise in single-ended resistive FET mixers is investigated with respect to the influence of the gate-source voltage. Using a simple broadband mixer with a Fujitsu HEMT, measurement and simulation results are compared yielding good agreement. Two mechanisms exists that create 1/f-noise: The self-mixing process and the self-mixing current Both cancel each other, i.e., there is a gate bias where a flicker noise minimum appears. The location of this minimum can be controlled with the DC output impedance.
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页码:1015 / 1017
页数:3
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