Title :
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
fDate :
31 May-3 Jun 1998
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;
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
DOI :
10.1109/ISCAS.1998.706844
