Exploiting cross-coupled and body-driven techniques for noise cancellation of an inductor-less wideband LNA

In this paper, using bulk terminal of transistors as well as auxiliary cross-coupled amplifiers, the gain and noise figure (NF) of a conventional common-source low-noise amplifier (LNA) with resistive feedback are improved significantly. The proposed LNA utilizes a new technique for cancelling the t...

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Bibliographic Details
Published in:International journal of electronics and communications 2015-04, Vol.69 (4), p.708-714
Main Authors: Ebrahimi, Ali, Bastan, Yasin, Ebrahimi, Emad, Shamsi, Hossein
Format: Article
Language:English
Subjects:
Bulk
Cross-coupled
Low-noise amplifier (LNA)
Noise cancellation
Noise figure (NF)
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Summary:In this paper, using bulk terminal of transistors as well as auxiliary cross-coupled amplifiers, the gain and noise figure (NF) of a conventional common-source low-noise amplifier (LNA) with resistive feedback are improved significantly. The proposed LNA utilizes a new technique for cancelling the thermal noise of transistors. This LNA is simulated in a 0.18μm CMOS technology. Simulation results show a 28-dB voltage gain for the frequency range of 10–1000MHz, and IIP3 better than −11dBm. The noise figure in the frequency range of 100–1000MHz is 1.2–1.4dB. Moreover; the noise figure in the frequency range of 35–100MHz is also less than 2dB. The total current drawn from a 1.8-V supply voltage is 15mA.
ISSN:1434-8411
1618-0399
DOI:10.1016/j.aeue.2014.12.014