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Fully differential DDA-based fifth and seventh order Bessel low pass filters and buffers for DCR radio systems

  • Mixed Signal Letter
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Abstract

In this letter the design, fabrication and measurements of fully differential filters and buffers in a 180 nm CMOS process for direct conversion receivers (DCRs) applications are reported. The fully differential fifth and seventh order Bessel low pass filters and buffers are completely based on a differential difference amplifier with common mode feedback capability. In particular, the filters have been designed with a tunable 100 kHz–1 MHz 6 dB bandwidth, in two steps, in order to allow the DCR radio to operate with a 100 Kbit/s–1 Mbit/s data rate. The circuits operate at a 3.3 V supply voltage. The whole chip power consumption, implementing four buffers, two-fifth and two-seventh order low pass filters, is only 6 mW, being particularly suitable for portable apparatus.

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Authors and Affiliations

  1. Department of Industrial and Information Engineering and Economic, University of L’Aquila, Località Campo di Pile, Via Gronchi 18, 67040, L’Aquila, Italy

    V. Stornelli, L. Pantoli, G. Leuzzi & G. Ferri

Authors
  1. V. Stornelli
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  2. L. Pantoli
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  3. G. Leuzzi
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  4. G. Ferri
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Correspondence to V. Stornelli.

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Stornelli, V., Pantoli, L., Leuzzi, G. et al. Fully differential DDA-based fifth and seventh order Bessel low pass filters and buffers for DCR radio systems. Analog Integr Circ Sig Process 75, 305–310 (2013). https://doi.org/10.1007/s10470-013-0051-9

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  • DOI: https://doi.org/10.1007/s10470-013-0051-9

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