A Variable Gain Multiband Shunt Feedback LNA for LTE

Author

Kaehlert, Stefan ; Bormann, Dirk ; Wunderlich, Ralf ; Heinen, Stefan

Author_Institution

Dept. of Integrated Analog Circuits & RF Syst., RWTH Aachen Univ., Aachen, Germany

fYear

2010

fDate

12-15 Dec. 2010

Firstpage

86

Lastpage

89

Abstract

The future belongs to multiband bandwidth-on-demand mobile networks. Simply reconfigurable mobile devices will be the key to handle the increasing number of bands as well as the varying bandwidth requirements. The LNA constitutes the first block of the receiver chain and therefore has to implement the highest level of reconfigurability. A shunt feedback LNA has been designed that can be used for multiple frequency bands. The proposed LNA has two gain steps incorporating a wideband match of at least -10 dB. Below 2 GHz the minimum gain is above 26 dB and the noise figure is below 1.9 dB. Below 1 GHz the gain is above 30 dB and the noise figure is below 1.5 dB. The IIP3 in low gain mode is least 5.8 dBm. The results have been obtained using a current of 8.7mA from a 1.4V supply in a 90 nm CMOS technology.

Keywords

CMOS analogue integrated circuits; Long Term Evolution; feedback; low noise amplifiers; CMOS technology; LTE; current 8.7 mA; low gain mode; multiband bandwidth-on-demand mobile network; multiple frequency band; size 90 nm; variable gain multiband shunt feedback LNA; voltage 1.4 V; Bandwidth; CMOS integrated circuits; CMOS technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits, and Systems (ICECS), 2010 17th IEEE International Conference on

Conference_Location

Athens

Print_ISBN

978-1-4244-8155-2

Type

conf

DOI

10.1109/ICECS.2010.5724460

Filename

5724460