A widely tunable narrowband balun-LNA with integrated filtering

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

A cascodebalun-LNAwithintegratedout-of-bandfilteringfor radio applications between 300 MHz and 1 GHz is proposed. First the high-Q bandpassfilter(BPF) and the low noise amplifier (LNA) are analyzed, separately, in order to understand its characteristics and how both circuits can operate together. To allow maximum out-of-band interferers attenuation a single-ended and a differentialfiltersare used inLNA, at the input and at the cascode devices, respectively. Using standard 130 nm CMOS technology operating at 1.2 V supply voltage, we obtained a voltage gain greater than 23.7 dB, noise figure (NF) lower than 3.3 dB, IIP2 > + 22 dBm and IIP3 > -4 dBm. For out-of-band frequencies the interferers are attenuated, at least, by 14 dB relatively to the desired signals.
Original languageEnglish
Title of host publicationProceedings of the 21th International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES 2014)
Pages160-165
ISBN (Electronic)978-83-63578-04-6
DOIs
Publication statusPublished - 2014
Event21st International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES) -
Duration: 1 Jan 2014 → …

Conference

Conference21st International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES)
Period1/01/14 → …

Keywords

  • Cmos
  • Discrete filter
  • High-Q bandpass filter
  • Impedance transformation
  • Inductorless Lna
  • N-path filter
  • Noise cancellation
  • Saw-less
  • Tunable LNA
  • Wideband matching

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  • Cite this

    Fernandes, M. D., Oliveira, L. A. B. G. D., & Oliveira, J. P. A. D. (2014). A widely tunable narrowband balun-LNA with integrated filtering. In Proceedings of the 21th International Conference on Mixed Design of Integrated Circuits and Systems (MIXDES 2014) (pp. 160-165). [6872177] https://doi.org/10.1109/MIXDES.2014.6872177