IEEE文章Wide-band CMOS Low Noise Amplifier for Applications in Radio Astronomy

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IEEE文章-----《Wide-band CMOS Low Noise Amplifier for Applications in Radio Astronomy》

作者------Leonid Belostotski*, Student Member, IEEE, James W. Haslett*, Fellow, IEEE, and Bruce Veidtt


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 0.18,um CMOS achieves better than 11 dB return loss

with a noise temperature of 40 K,provides a power gain of 17dB and IP1dB of -10dBm while consuming 50mW 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.

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