A Ka band CMOS differential LNA with 25dB gain using neutralized bootstrapped cascode amplifier

被引：7
|
作者：
Ding, Bowen [1 ,2 ]
Yuan, Shengyue [1 ]
Zhao, Chen [1 ,2 ]
Tao, Li [1 ,2 ]
Li, Xiaoyun [1 ,2 ]
Tian, Tong [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Wireless Sensor Network Dept, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
IEICE ELECTRONICS EXPRESS | 2018年 / 15卷 / 09期
关键词：
LNA; bootstrapped; neutralization; transformer; CMOS; POWER-AMPLIFIER;
D O I：
10.1587/elex.15.20180230
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：
This paper presents a Ka band two-stage differential LNA in standard CMOS technology. Neutralized bootstrapped cascode amplifier (NBCA) is implemented to improve the gain and noise performance of the LNA while maintaining the stability. By using 1: 3 transformer and larger common gate transistor in the output buffer, the output matching is improved. The effects of neutralization and bootstrapped capacitor on the noise figure, gain and stability are further analyzed. Measurements show that the whole circuit offers a 25 dB peak gain and 4.1 dB NF at 34.5 GHz, with better than 10 dB return losses at the frequency band of interest (33.5 GHz-36 GHz).
引用
收藏
页数：12
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