A low-power noise-canceling LNA with downward impedance transformer and resistive feedback

Author

Ran Zhang ; Zhijian Lu ; Dongpo Chen

Author_Institution

Sch. of Microelectron., Shanghai Jiao Tong Univ., Shanghai, China

fYear

2014

fDate

28-31 Oct. 2014

Firstpage

1

Lastpage

3

Abstract

A 0.18μm CMOS LNA for low-power and wide-band applications is presented in this paper. Based on a common-gate-common-source (CG-CS) noise-canceling topology, a resistive feedback LNA and a downward impedance transformer are introduced to save more power while maintaining wide-band input matching. Post simulation shows that the NF is lower than 2.6dB with 2.4dB minimum; S11<;-13dB and S21=23dB from 1GHz to 1.8GHz. The LNA consumes only 3.2mA under 1.8V supply voltage within 0.04mm² chip area.

Keywords

CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; impedance convertors; integrated circuit noise; interference suppression; low noise amplifiers; low-power electronics; wideband amplifiers; CG-CS topology; CMOS LNA; common-gate-common-source; current 3.2 mA; downward impedance transformer; frequency 1 GHz to 1.8 GHz; low-power noise-canceling LNA; resistive feedback LNA; size 0.18 mum; voltage 1.8 V; wideband input matching; Abstracts; Computers; Noise measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on

Conference_Location

Guilin

Print_ISBN

978-1-4799-3296-2

Type

conf

DOI

10.1109/ICSICT.2014.7021421

Filename

7021421