A 0.06–3.4-MHz 92- μ W Analog FIR Channel Selection Filter With Very Sharp Transition Band for IoT Receivers

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    Abstract

    Analog FIR filtering is proposed to improve the performance of a single stage gm -C channel selection filter for ultra low power Internet-of-Things receivers. The transconductor is implemented as a digital-to-analog converter; allowing a varying transconductance in time, which results in a very sharp FIR filter. The filter is manufactured in 22-nm FDSOI and has a core area of 0.09 mm 2 . It consumes 92 μW from a 700-mV supply and achieves f−60dB/f−3dB=3.8 . The filter has 31.5 dB gain, out-of-band OIP3 of 28 dBm and output referred 1-dB compression point of 3.7 dBm. The filter bandwidth is tunable from 0.06 to 3.4 MHz.
    Original languageEnglish
    Pages (from-to)171-174
    Number of pages4
    JournalIEEE Solid State Circuits Letters
    Volume2
    Issue number9
    Early online date1 Sep 2019
    DOIs
    Publication statusPublished - 21 Oct 2019

    Keywords

    • Analog filters
    • Analog FIR (AFIR) filters
    • FDSOI
    • gmDAC
    • Internet-of-Things (IoT)
    • Low power
    • Low-Pass Filter (LPF)

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