Low-Noise Amplifier Design With Dual Reactive Feedback for Broadband Simultaneous Noise and Impedance Matching

Author

Fu, Chang-tsung ; Kuo, Chien-Nan ; Taylor, Stewart S.

Author_Institution

Dept. of Electron. Eng., Nat. ChiaoTung Univ., Hsinchu, Taiwan

Volume

58

Issue

4

fYear

2010

fDate

4/1/2010 12:00:00 AM

Firstpage

795

Lastpage

806

Abstract

The simultaneous noise and impedance matching (SNIM) condition for a common-source amplifier is analyzed. Transistor noise parameters are derived based on the more complete hybrid-?? model, and the dominant factors jeopardizing SNIM are identified. Strategies for narrowband and broadband SNIM (BSNIM) are derived accordingly. A dual reactive feedback circuit along with an LC-ladder matching network is proposed to achieve the BSNIM. It includes a capacitive and an inductive feedback, where the former utilizes the transistor parasitic gate-to-drain capacitance and the latter is formed by transformer coupling. This circuit topology has been validated in 0.18- and 0.13- ??m CMOS technologies for a 3-11-GHz ultra-wideband (UWB) and a 2.4-5.4-GHz multistandard application, respectively. The 3-11-GHz UWB low-noise amplifier is detailed as a design example.

Keywords

CMOS integrated circuits; feedback amplifiers; impedance matching; low noise amplifiers; network topology; ultra wideband technology; CMOS technologies; broadband simultaneous noise; circuit topology; common-source amplifier; dual reactive feedback; impedance matching; low-noise amplifier design; multistandard application; transistor noise parameters; ultrawideband application; Broadband input matching; capacitive feedback; low power; low-noise amplifier (LNA); noise optimized design; simultaneous noise and impedance matching (SNIM); transformer feedback; ultra-wideband (UWB);

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2010.2041570

Filename

5431031