Achieving Wideband sub-1dB Noise Figure and High Gain with MOSFETs if Input Power Matching is not Required

Eric A.M. Klumperink, Qiaohui Zhang, Gerhardus J.M. Wienk, Roel Witvers, Jan Geralt Bij de Vaate, Bert Woestenburg, Bram Nauta

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    Abstract

    Abstract — A 0.18 μm CMOS Low Noise Amplifier (LNA) achieves sub-1dB Noise Figure over more than an octave of bandwidth without external noise matching components. It is designed for a future radio telescope, requiring millions of cheap LNAs mounted directly on phased array antenna elements. The short distance between antenna and LNA and low frequency below 2GHz allows for using an LNA with reflective input impedance, increasing the gain with 6dB. Without any matching network, very low noise figure is achieved over a wide bandwidth. At 90mW power, sub-1dB Noise is achieved for 50Ω source impedance over a 0.8-1.8GHz band without external coils, and S21>20dB, OIP2>25dBm and OIP3>15dBm. Preliminary results with 150 Ω source impedance show noise temperatures as low as 25 K around 900 MHz.
    Original languageEnglish
    Title of host publication 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium
    Place of PublicationPiscataway
    PublisherIEEE
    Pages673-676
    Number of pages4
    ISBN (Print)1-4244-0530-0
    DOIs
    Publication statusPublished - 3 Jun 2007
    Event2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007 - Hawaii Convention Center, Honolulu, HI, United States
    Duration: 3 Jun 20075 Jun 2007

    Conference

    Conference2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
    Abbreviated titleRFIC
    CountryUnited States
    CityHonolulu, HI
    Period3/06/075/06/07

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    Keywords

    • EWI-10331
    • METIS-241715
    • IR-58154

    Cite this

    Klumperink, E. A. M., Zhang, Q., Wienk, G. J. M., Witvers, R., Bij de Vaate, J. G., Woestenburg, B., & Nauta, B. (2007). Achieving Wideband sub-1dB Noise Figure and High Gain with MOSFETs if Input Power Matching is not Required. In 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium (pp. 673-676). Piscataway: IEEE. https://doi.org/10.1109/RFIC.2007.380972