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Antenna Design for Angle of Arrival Measurement in Access Control Applications
KTH, School of Electrical Engineering and Computer Science (EECS).
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The Bluetooth direction finding working group proposed functionalities to the Bluetooth core that can realize Angle of Arrival estimations using interferometry. The technology can be employed to develop new access control applications. Following previous findings in Englund (2018), the purpose of this project is to investigate the feasibility of such systems when antennas are being used. The goal is to design a matchbox size antenna array which can be used by the system to distinguish between two sides in an inside-outside scenario. A number of antennas were designed, simulated and tested on a prototype. While the simulations results were consistent with the theory, the prototype measurements were not. However, it is shown that it is possible to estimate between inside and outside.

Abstract [sv]

Bluetooth direction finding working group har lagt fram ett förslag om att lägga till Angle of Arrival estimerings funktionalitet baserat på en interferometri metod i Bluetooth kärnan. Tekniken kan användas för att utveckla nya åtkomstkontrolls lösningar. Detta projekt en påbyggnad av arbetet utfört av Englund (2018), syftet är att utvärdera möjligheten av en sådan åtkomstkontrolls lösning där antenner används. Målet är att designa en tändsticksask stor antenn array som kan användas av ett systemet för att särskilja mellan två sidor i ett insida-utsida scenario. Ett antal antenner konstruerades, simulerades och prototyper byggdes samt testades. Medan simuleringsresultaten var förenliga med teorin, så påvisade prototyperna inte samma beteende då resultatet skiljde sig från teorin. Projektet konstaterar dock att det är möjligt att skilja mellan insida och utsida.

Place, publisher, year, edition, pages
2019. , p. 98
Series
TRITA-EECS-EX ; 2019:51
Keywords [en]
Patch Antenna, Angle of Arrival, Bluetooth, Keyless Access Control
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-247508OAI: oai:DiVA.org:kth-247508DiVA, id: diva2:1298498
External cooperation
ASSA ABLOY Shared Technologies
Educational program
Master of Science - Wireless Systems
Presentation
2019-03-04, EME seminar room, Teknikringen 31, Stockholm, 16:00 (English)
Supervisors
Examiners
Available from: 2019-06-12 Created: 2019-03-23 Last updated: 2019-06-13Bibliographically approved

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CiteExportLink to record
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