Analysis and design of low noise transconductance amplifier for selective receiver front-end
2015 (English)In: Analog Integrated Circuits and Signal Processing, ISSN 0925-1030, E-ISSN 1573-1979, Vol. 85, no 2, 361-372 p.Article in journal (Refereed) Published
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 (A (R)) circuit simulation showing NF less than 2 dB and IIP3 = 18 dBm at 3 GHz. The amplifier performance is demonstrated in a two-stage highly selective receiver front-end implemented in 65 nm CMOS technology. In measurements the front-end achieves blocker rejection competitive to SAW filters with noise figure 3.2-5.2 dB, out of band IIP3 greater than+17 dBm and blocker P-1dB greater than+5 dBm over frequency range of 0.5-3 GHz.
Place, publisher, year, edition, pages
Springer, 2015. Vol. 85, no 2, 361-372 p.
Low-noise transconductance amplifier (LNTA); Highly linear LNA; Wideband LNA; SAW-less receiver; Wideband selective RF front-end
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-122187DOI: 10.1007/s10470-015-0629-5ISI: 000361984600014OAI: oai:DiVA.org:liu-122187DiVA: diva2:865069