An 18-32 GHz ultra wideband low-noise amplifier with a low variation of group delay

Bohee Seo, Sanggeun Jeon

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

3 Citations (Scopus)

Abstract

This paper presents an 18-to-32-GHz ultra wideband (UWB) low-noise amplifier (LNA) in a bulk 0.13-μm CMOS technology. The LNA consisting of four stages exhibits a flat gain of 14.5 ± L.5 dB over the entire 18-to-32 GHz and a noise figure of 5.5 ± 0.4 dB at K-band (18 to 26.5 GHz). Moreover, the group delay variation is suppressed as low as 63.5 ± 6.5 ps over 21-26 GHz. The wideband characteristics of gain and group delay are achieved by a slope offset technique. The individual stages are designed, such that the transfer function of each stage shows its peak at different frequencies by adjusting the output resonance network. The pole-zero analysis is performed to validate the slope offset technique and to provide a practical design guideline. Due to the wideband performance of flat gain and group delay, the proposed LNA is suitable for UWB communication or radar applications that demand an instantaneously wide fractional bandwidth.

Original languageEnglish
Title of host publicationIMS 2012 - 2012 IEEE MTT-S International Microwave Symposium
DOIs
Publication statusPublished - 2012
Event2012 IEEE MTT-S International Microwave Symposium, IMS 2012 - Montreal, QC, Canada
Duration: 2012 Jun 172012 Jun 22

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Other

Other2012 IEEE MTT-S International Microwave Symposium, IMS 2012
CountryCanada
CityMontreal, QC
Period12/6/1712/6/22

Keywords

  • CMOS
  • Flat group delay
  • Low-noise amplifier
  • Ultra wideband

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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  • Cite this

    Seo, B., & Jeon, S. (2012). An 18-32 GHz ultra wideband low-noise amplifier with a low variation of group delay. In IMS 2012 - 2012 IEEE MTT-S International Microwave Symposium [6259741] (IEEE MTT-S International Microwave Symposium Digest). https://doi.org/10.1109/MWSYM.2012.6259741