Reconfigurable FM-UWB transmitter design for robust short range communications

Bo Zhou, Woogeun Rhee*, Dongwook Kim, Zhihua Wang

*Corresponding author for this work

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Abstract

This paper presents the architecture and circuit design of the reconfigurable frequency-modulated ultra-wideband (FM-UWB) transmitter for robust non-invasive short range communications. The transmitter employs a Δ-Σ fractional-N PLL with an amplitude-controlled quadrature relaxation VCO to generate a 2-FSK modulated triangular waveform. The differential triangular waveform outputs of the relaxation VCO directly modulate a dual-path LC VCO whose center frequency is set by a digitally configurable quasi-continuous frequency-locked loop (FLL) for nearly 600-MHz UWB signal generation. Experimental results of a 10 to 100 kb/s, 3.3 to 4.4 GHz FM-UWB transmitter in 0.18-μm CMOS are presented and future works are addressed.

Original languageEnglish
Pages (from-to)1133-1144
Number of pages12
JournalTelecommunication Systems
Volume52
Issue number2
DOIs
Publication statusPublished - Feb 2013
Externally publishedYes

Keywords

  • Delta-sigma
  • FM-UWB
  • Fractional-N
  • Frequency modulation
  • Frequency-locked loop
  • Phase-locked loop
  • RF transceiver
  • UWB
  • VCO

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Zhou, B., Rhee, W., Kim, D., & Wang, Z. (2013). Reconfigurable FM-UWB transmitter design for robust short range communications. Telecommunication Systems, 52(2), 1133-1144. https://doi.org/10.1007/s11235-011-9629-7