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A mm-Wave MIMO transmitter with a digital beam steering capability using CMOS all-digital phase-locked loop chips
, Article 2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies, IMWS-5G 2018, 30 August 2018 through 31 August 2018 ; 2018 ; 9781538611975 (ISBN) ; Bogdan Staszewski, R ; Farzaneh, F ; Sharif University of Technology
Abstract
In this paper, we propose a mm-wave transmitter architecture intended for radar and 5G MIMO applications with beam steering over 57-63 GHz frequency band. Each transmitter chain comprises an all-digital phase-locked loop (ADPLL) CMOS IC chip intended to be dictated to a single antenna unit within an array. For demonstration purposes, each IC is embedded on a printed circuit board (PCB) to provide beam steering using highly accurate digital approach. The overall transmitter is connected to an antenna array with half wavelength spaced elements to maximize the beam scanning coverage. The ADPLL boards are fabricated and a calibration technique is carried out to align amplitude-phase of all...