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Title: Ball grid array-module with integrated shaped lens for WiGig applications in eyewear devices
Authors: Bisognin, Aimeric
Cihangir, Aykut
Luxey, Cyril
Jacquemod, Gilles
Pilard, Romain
Gianesello, Frederic
Costa, Jorge R.
Fernandes, Carlos A.
Lima, Eduardo B.
Panagamuwa, C.J.
Whittow, W.G.
Keywords: 60 GHz
Antenna-in-package
Eyewear
Lens antennas
Plastic packaging
WiGig
Issue Date: 2016
Publisher: © IEEE
Citation: BISOGNIN, A. ... et al., 2016. Ball grid array-module with integrated shaped lens for WiGig applications in eyewear devices. IEEE Transactions on Antennas and Propagation, 64 (3), pp.872-882.
Abstract: A ball grid array-module (BGA-module) incorporating a low-cost shaped dielectric lens is proposed for wireless communications in the 60-GHz WiGig band between a smart eyewear, where it is integrated and facing a laptop or TV. Themodule, which is codesigned with a 60-GHz transceiver, consists of two separate identical antennas for transmitting (Tx) and receiving (Rx). The in-plane separation of these elements is 6.9 mm both being offset from the lens focus. This poses a challenge to the lens design to ensure coincident beam pointing directions for Rx and Tx. The shaped lens is further required to narrow the angular coverage in the elevation plane and broaden it in the horizontal plane. A 3-D-printed eyewear frame with an integrated lens and a recess for proper BGA-module integration is fabricated in ABSplastic material. Measurements show a reflection coefficient below −12 dB in the 57–66 GHz band. A maximum gain of 11 dBi is obtained at 60 GHz, with 24◦ and 96◦ beamwidth at 5-dBi gain, respectively, in the vertical and horizontal planes. The radiation exposure is evaluated for a homogeneous SAM head phantom and a heterogeneous visible human head. The simulated power density values for both models are found to be lower than the existing standards.
Description: © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Sponsor: The authors would like to acknowledge a scholarship given by project ESF RNP "Newfocus" to Aimeric Bisognin.
Version: Accepted for publication
DOI: 10.1109/TAP.2016.2517667
URI: https://dspace.lboro.ac.uk/2134/20892
Publisher Link: http://dx.doi.org/10.1109/TAP.2016.2517667
ISSN: 0018-926X
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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