A technique for bandwidth extension and noise optimization of wideband low-noise amplifier with dual feedback loops

被引：6
作者：
Sun, Zhengyu [1 ]
Yang, Hongwen [1 ]
Zhang, Lijun [1 ]
Yan, Yuepeng [1 ]
机构：
[1] Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China
来源：
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2013年 / 74卷 / 01期
关键词：
LNA; Wideband; pHEMT; Feedback loops; CMOS LNA; GAIN; RECEIVERS; FIGURE;
D O I：
10.1007/s10470-012-9958-9
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
A technique for bandwidth extension and noise optimization of wideband low-noise amplifier with dual feedback loops is presented. A LC-ladder matching network has been added in front of conventional amplifier with dual feedback loops. Detailed circuit analysis and general design procedures for the modified amplifier have been provided. The technique is applied to an amplifier covering the frequency range from DC to 6 GHz in a 0.5 mu m InGaAs E-mode pHEMT process. Post-layout simulation shows S (11) below -10 dB, S (22) below -10 dB, flat S (21) of 16 +/- A 0.2 dB, and flat NF of 1.85 +/- A 0.35 dB across the entire band, which confirms the improvement in bandwidth and noise performance.
引用
收藏
页码：203 / 213
页数：11
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