Time Interleaved ADC mismatch error correction technique in I/Q Digital Beamforming Receivers

Pavlos Athanasiadis, Marios Neofytou, Marcello Ganzerli, Georgi I. Radulov, Kostas Doris

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Time-Interleaved ADCs are essential for new generation mm-wave digital beamforming receivers offering multi-GHz bandwidths for radar sensing or high data rate communication links. Timing mismatches is one of the main performance limitations of these ADCs. Especially for large beamforming arrays they can become bottleneck for system power and area when corrected with digital filtering techniques at GHz rates. This work analyzes timing errors in digital beamforming receivers and introduces a novel correction algorithm that takes advantage of the array of ADCs and the beamforming function together. The proposed algorithm suppresses significantly the impact from timing mismatches with low complexity enabling major power savings for massive digital beamforming arrays.
Original languageEnglish
Title of host publication2021 IEEE International Symposium on Circuits and Systems (ISCAS)
PublisherInstitute of Electrical and Electronics Engineers
Pages1-5
Number of pages5
ISBN (Electronic)978-1-7281-9201-7
ISBN (Print)978-1-7281-9202-4
DOIs
Publication statusPublished - 27 Apr 2021
Event2021 IEEE International Symposium on Circuits and Systems, (ISCAS 2021) - VIRTUAL, Daegu, Korea, Republic of
Duration: 22 May 202128 May 2021

Conference

Conference2021 IEEE International Symposium on Circuits and Systems, (ISCAS 2021)
CountryKorea, Republic of
CityDaegu
Period22/05/2128/05/21

Keywords

  • digital beamforming
  • ADC
  • Time Interleave
  • Mismatch correction

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