Stability analysis of on-chip multi-stage RF power amplifiers

被引:3
|
作者
Unterweissacher, Martin [1 ]
Mertens, Koen [2 ]
Brandtner, Thomas [2 ]
Pribyl, Wolfgang [1 ]
机构
[1] Graz Univ Technol, Dept Elect, Inffeldgasse 12, A-8010 Graz, Austria
[2] Infineon Technol Austria AG, A-9500 Villach, Austria
关键词
feedback; inductance; power amplifiers; power supplies; stability;
D O I
10.1109/RFIC.2007.380926
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
On-chip multi-stage wideband power amplifiers may show oscillations due to an unwanted feedback loop via the power distribution network. A fully differential CMOS amplifier with a bandwidth from 6 to 9 GHz that was expected to be sensitive to oscillations has been analyzed by utilizing a novel pre-layout method for estimating power grid parasitics including inductance effects. Sweeping the parameters of the power grid models enabled us to find a power grid that improved the stability of the power amplifier (PA).
引用
收藏
页码:471 / +
页数:2
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