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

Veselin Manev, Marios Neofytou, Georgi I. 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 publicationA novel analysis of the beam squinting in wideband phased array digital I/Q transmitters
Publication statusPublished - Sep 2020

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    Manev, V., Neofytou, M., Radulov, G. I., & Doris, K. (2020). A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters. In A novel analysis of the beam squinting in wideband phased array digital I/Q transmitters