Wearable radar antenna array design on flexible PCB for visually impaired people

Haoran Zhang, Yiming Yang, Atif Shamim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a multiple-input multiple-output (MIMO) antenna array with four RXs and three TXs designed in a certain geometry configuration to achieve obstacle detection ability in both horizontal and vertical planes for an anti-collision radar system, which can enable visually impaired people to perceive the environment better in their everyday lives. An aperture coupled wide-beam patch antenna with two parasitic patches is proposed for each channel of RXs and TXs, which is utilized on a four-layer flexible printed circuit board (PCB) to ensure its compactness and wearability. The proposed MIMO antenna array achieves well-matched impedance in the frequency range of 76-81 GHz and the realized gains of 4.2 dBi and 2.4 dBi in each RX and TX channel respectively. It also realizes a wide 3dB beamwidth of larger than 90 degrees in the horizontal plane which improves the radar system angular coverage.
Original languageEnglish (US)
Title of host publication2021 International Applied Computational Electromagnetics Society Symposium, ACES 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781733509626
DOIs
StatePublished - Aug 1 2021

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