1.8 GHz CMOS LNA with on-chip DC-coupling for a subsampling direct conversion front-end

Author

Parssinen, A. ; Lindfors, S. ; Ryynanen, J. ; Long, S.I. ; Halonen, K.

Author_Institution

Inst. of Radio Commun., Helsinki Univ. of Technol., Espoo, Finland

Volume

2

fYear

1998

fDate

31 May-3 Jun 1998

Firstpage

73

Abstract

A 1.8 GHz CMOS LNA, which is suitable as a front-end in a direct conversion radio receiver, has been designed. The LNA is designed to drive a capacitive load such as the load of a subsampling mixer. The output resonator limits the mixer input noise bandwidth, which is necessary to optimize the system noise figure. DC-coupling, an essential function in a direct conversion front-end, is realized with an on-chip structure, which has low sensitivity to parasitic effects. The LNA achieves NF of 3.4 dB and gain of 17 dB from 3 V supply

Keywords

CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; UHF mixers; integrated circuit noise; radio receivers; signal sampling; 1.8 GHz; 17 dB; 3 V; 3.4 dB; CMOS LNA; capacitive load; direct conversion radio receiver; front-end; gain; noise figure; on-chip DC coupling; resonator; subsampling mixer; CMOS technology; Energy consumption; Filters; Image converters; Integrated circuit technology; Low-noise amplifiers; MOSFETs; Noise figure; Receivers; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1998. ISCAS '98. Proceedings of the 1998 IEEE International Symposium on

Conference_Location

Monterey, CA

Print_ISBN

0-7803-4455-3

Type

conf

DOI

10.1109/ISCAS.1998.706844

Filename

706844