Low power reconfigurable multi-mode LNA utilizing subthreshold bias and low-Q inductors

Author

Aravinth Kumar, A.R. ; Singh, Shiv Govind ; Dutta, Ashudeb

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol. Hyderabad, Hyderabad, India

fYear

2015

fDate

24-27 May 2015

Firstpage

650

Lastpage

653

Abstract

This paper presents a low power reconfigurable narrowband, concurrent multiband, wideband multimode LNA for multi-standard applications. Subthreshold region biasing, quality factor aware impedance matching, component sharing between different modes are employed. Input matching is unbounded from other performance parameter. Proposed LNA works in narrowband mode at 1.8GHz, 2.1GHz and 2.4GHz, dualband mode at 1.9GHz and 5.4GHz and in wideband mode 2-5GHz. The voltage gain varies from 11dB to 18dB, noise figure from 5.5dB to 8.5dB and CP1dB -9.2dBm to -17.4dBm over different modes, while consuming 1.8mW in narrowband and 3.84mW in other modes from 1.8V supply in UMC180nm CMOS process.

Keywords

CMOS integrated circuits; MMIC amplifiers; UHF amplifiers; field effect MMIC; low noise amplifiers; low-power electronics; UMC CMOS process; concurrent multiband LNA; frequency 1.8 GHz; frequency 2 GHz to 5 GHz; frequency 5.4 GHz; low noise amplifier; low power LNA; low-Q inductors; multimode LNA; multistandard applications; narrowband LNA; power 1.8 mW; power 3.84 mW; reconfigurable LNA; size 180 nm; subthreshold bias; voltage 1.8 V; Capacitors; Dual band; Impedance; Impedance matching; Inductors; Narrowband; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2015 IEEE International Symposium on

Conference_Location

Lisbon

Type

conf

DOI

10.1109/ISCAS.2015.7168717

Filename

7168717