Analysis and design of low noise transconductance amplifier for selective receiver front-end

Analysis and design of a low-noise transconductance amplifier (LNTA) aimed at selective current-mode (SAW-less) wideband receiver front-end is presented. The proposed LNTA uses double cross-coupling technique to reduce noise figure (NF), complementary derivative superposition, and resistive feedback...

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Bibliographic Details
Published in:Analog integrated circuits and signal processing 2015-11, Vol.85 (2), p.361-372
Main Authors: Duong, Quoc-Tai, Qazi, Fahad, Dąbrowski, Jerzy J.
Format: Article
Language:English
Subjects:
Circuits and Systems
Electrical Engineering
Engineering
Signal,Image and Speech Processing
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Summary:Analysis and design of a low-noise transconductance amplifier (LNTA) aimed at selective current-mode (SAW-less) wideband receiver front-end is presented. The proposed LNTA uses double cross-coupling technique to reduce noise figure (NF), complementary derivative superposition, and resistive feedback to achieve high linearity and enhance input matching. The analysis of both NF and IIP3 using Volterra series is described in detail and verified by SpectreRF ® circuit simulation showing NF +17 dBm and blocker P 1dB  >+5 dBm over frequency range of 0.5–3 GHz.
ISSN:0925-1030
1573-1979
1573-1979
DOI:10.1007/s10470-015-0629-5