A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters

Veselin Manev, Marios Neofytou, Georgi Radulov, Kostas Doris

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

Abstract

This paper investigates the beam squint of direct conversion phased array transmitters with quadrature modulation and digital beam-forming. Beam squint occurs due to frequency dependent beam forming and leads to signal deterioration. It is analyzed in terms of EVM and maximum bit-rate, using both analytical and numerical computation. Various results illustrate the dependencies of the error mechanism on key design parameters in mm-wave transmitters. It is shown that having 14 elements and 120° scanning angle limits the theoretical maximum bitrate by 84% We show that using partial symbol delay in baseband, the EVM can be improved up to-30dB for 10 elements and more, without any apparent disadvantages. Moreover the bitrate theoretical maximum is increased by 4 times.

Original languageEnglish
Title of host publicationECCTD 2020 - 24th IEEE European Conference on Circuit Theory and Design
PublisherInstitute of Electrical and Electronics Engineers
Number of pages4
ISBN (Electronic)978-1-7281-7183-8
DOIs
Publication statusPublished - Sep 2020
Event24th European Conference on Circuit Theory and Design, ECCTD 2020 - Sofia, Bulgaria
Duration: 7 Sep 202010 Sep 2020
Conference number: 24

Conference

Conference24th European Conference on Circuit Theory and Design, ECCTD 2020
Country/TerritoryBulgaria
CitySofia
Period7/09/2010/09/20

Keywords

  • beam squint
  • mmWave
  • phased array
  • transmitter
  • wideband

Fingerprint

Dive into the research topics of 'A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters'. Together they form a unique fingerprint.

Cite this