A 2.4 GHz ultra low-power high gain LNA utilizing π-match and capacitive feedback input network

Author

Thi Thu Nga Tran ; Chirn Chye Boon ; Manh Anh Do ; Kiat Seng Yeo

Author_Institution

Dept. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2011

fDate

7-10 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, an ultra low-power CMOS low noise amplifier (LNA) with a new input matching topology will be proposed and analyzed. The LNA design is based on the capacitive feedback in conjunction with a π-match network. The proposed LNA saves on chip area by using only one inductor for the input matching. The π-match network introduces an additional degree of design freedom and allows the LNA to achieve higher gain. The LNA is designed for 2.4 GHz ISM band in a 130 nm RF-CMOS process. It achieves a gain of 25.2 dB with an S₁₁ of -14 dB while consuming only 0.6 mW. The noise figure (NF) is 3.8 dB.

Keywords

CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; inductors; low noise amplifiers; π-match network; CMOS low noise amplifier; RF-CMOS process; capacitive feedback input network; frequency 2.4 GHz; high gain LNA; inductor; input matching topology; noise figure 3.8 dB; power 0.6 mW; size 130 nm; ultra low-power LNA; Gain; Noise measurement; Tin;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on

Conference_Location

Seoul

ISSN

1548-3746

Print_ISBN

978-1-61284-856-3

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2011.6026434

Filename

6026434