Ultra-wideband low noise amplifier using a cascode feedback topology

Author

Jung, Jihak ; Chung, Kyungho ; Yun, Taeyeoul ; Choi, Jaehoon ; Kim, Hoontae

Author_Institution

Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul

fYear

2006

fDate

18-20 Jan. 2006

Abstract

An ultra-wideband (UWB) low noise amplifier (LNA) that consists of two cascode and shunt feedback stages is presented. Measurement results show the maximum power gain (S₂₁) of 11.9 dB with the 3-dB band from 2 to 6.5 GHz and input/output reflection coefficient (S₁₁, S₂₂) of less than -7.8 dB from 2 to 11 GHz. In addition, the fabricated LNA achieves the average noise figure (NF) of 4.5 dB from 2 to 10 GHz, which value is much lower than previously reported state-of-the-art UWB amplifiers. The input-referred third-order intercept point (IIP3) and the input-referred 1-dB compression point (Pub) of the LNA are achieved as 4 dBm and -5 dBm, respectively, while consuming 27 mW in 0.18 mum RF CMOS process

Keywords

CMOS integrated circuits; MMIC amplifiers; circuit feedback; low noise amplifiers; ultra wideband technology; wideband amplifiers; 0.18 micron; 11.9 dB; 2 to 11 GHz; 27 mW; 4.5 dB; RF CMOS process; cascode feedback; input-referred compression point; shunt feedback; third-order intercept point; ultra wideband low noise amplifier; Acoustic reflection; Feedback; Gain measurement; Low-noise amplifiers; Noise figure; Noise measurement; Power measurement; Radiofrequency amplifiers; Topology; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Silicon Monolithic Integrated Circuits in RF Systems, 2006. Digest of Papers. 2006 Topical Meeting on

Conference_Location

San Diego, CA

Print_ISBN

0-7803-9472-0

Type

conf

DOI

10.1109/SMIC.2005.1587943

Filename

1587943