Title :
Wide-band CMOS low noise amplifier for applications in radio astronomy
Author :
Belostotski, Leonid ; Haslett, James W. ; Veidt, B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta.
Abstract :
A CMOS low noise amplifier (LNA) is proposed for a proof-of-concept design of the square kilometer array (SKA) radio telescope. A novel variation on a well-known source-degenerated LNA topology is introduced that allows tuning of the power match centre frequency independently from the frequency at which the LNAs noise figure approaches its minimum noise. The 0.7-1.4 GHz LNA designed in 0.18mum CMOS achieves better than 11 dB return loss with a noise temperature of 40 K, provides a power gain of 17 dB and IP1dB of -10dBm while consuming 50 mW of power from a 1.8 V supply. The design procedure of the LNA is presented and performance of the LNA is compared with previously published results
Keywords :
CMOS analogue integrated circuits; circuit tuning; integrated circuit design; low noise amplifiers; radioastronomy; radiotelescopes; wideband amplifiers; 0.18 micron; 0.7 to 1.4 GHz; 1.8 V; 11 dB; 17 dB; 40 K; 50 mW; SKA radio telescope; power match centre frequency tuning; radio astronomy; source-degenerated LNA topology; square kilometer array radio telescope; wide-band CMOS low noise amplifier; Broadband amplifiers; Frequency; Low-noise amplifiers; Noise figure; Optical design; Radio astronomy; Radiofrequency amplifiers; Temperature; Topology; Tuning;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1692843
