Analysis of Time-Interleaved ADC Offset and Gain Mismatch Errors in PMCW Radar

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Abstract

Phase-Modulated Continuous Wave (PMCW) Radar can enable future autonomous driving thanks to its robustness against interference and flexibility in the digital domain. However, there are stringent requirements for the Analog-Digital Converter (ADC), in terms of speed and linearity, which are due to the needed radar range and Doppler resolution. Time-interleaving is used to attain the required signal bandwidth while achieving a high effective number of bits (ENOB) by compensating mismatch errors between different time-interleaving channels. This paper analyzes the dominant time-interleaving errors: Offset and gain. The paper demonstrates how they impact PMCW radar performance by creating ghost targets and decreasing signal-to-noise ratio (SNR).

Original languageEnglish
Title of host publicationEuRAD 2020 - 2020 17th European Radar Conference
PublisherInstitute of Electrical and Electronics Engineers
Pages434-437
Number of pages4
ISBN (Electronic)9782874870613
DOIs
Publication statusPublished - 10 Jan 2021
Event17th European Radar Conference, EuRAD 2020 - Utrecht, Netherlands
Duration: 13 Jan 202115 Jan 2021

Conference

Conference17th European Radar Conference, EuRAD 2020
CountryNetherlands
CityUtrecht
Period13/01/2115/01/21

Keywords

  • analog-digital conversion
  • binary phase shift keying
  • error analysis
  • Radar

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