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A STUDY OF A MULTI BAND ANTENNA’S PERFORMANCE FOR DIFFERENT FREQUENCIES AND RADIO ACCESS TECHNOLOGIES
KTH, School of Information and Communication Technology (ICT).
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

There has been and will be a constant development in the field of communication systems and telecommunication in the form of network designs, access technologies, and equipment. Today, most of the mobile users are in indoors environments such as buildings, metros, arenas etc. These users are becoming impossible to serve from outdoor base station antenna because of energy-effective building techniques, which have RF shielding properties. A solution to this is to move antenna closer to the users in the indoor environment. There is a need to find a cost effective and economical and environmental solution to this switch. Generally, a separate deployment for RAKEL, 2G, 3G and LTE each is done for indoor coverage. With the use of a Multi band antenna, all the above radio access technologies can be deployed while sharing hardware.

This thesis investigates one such multi band antenna’s performance parameters for frequencies ranging from 380 MHz to 2700 MHz and provides a case study which analyses multiple deployed network locations and design where the antenna is deployed while serving RAKEL, 2G, 3G and LTE.

Abstract [sv]

Telekommunikationer har varit under konstant utveckling ända sedan vi började använda mobil kommunikation. Ständig utveckling av system design, olika teknologier och utrustningar. Idag sker den mobila kommunikationen i inomhusmiljöer, kontor, gallerior, hotell, tunnelbanor, sportarenor etc. Trafiken från just dessa anläggningar är i storleksordning 70 – 80 % av all trafik vilket gör det omöjligt att serva dessa användare från basstationer utomhus och med dagens energikrav på nya byggnader stänger effektivt ut alla radiosignaler från utomhus siter. En lösning är att flytta antennen närmare användaren vilket också innebär att hitta nya kosteffektiva lösningar för just denna typ av miljöer. Idag så designar man inomhusanläggningar för samtliga operatörer, 2G, 3G, LTE samt RAKEL. Användandet av en multiband-antenn kan man dela den mobila infrastrukturen med olika teknologier vilket innebär minskade kostnader.

Examensarbetet uppgift var att undersöka egenskaperna hos denna multiband antenn för frekvenserna 380 – 400 MHz, 698 – 2700 MHz och också fältstudier från redan installerade för RAKEL, 2G, 3G och LTE.

Place, publisher, year, edition, pages
2016. , p. 54
Series
TRITA-ICT-EX ; 2016:143
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-204914OAI: oai:DiVA.org:kth-204914DiVA, id: diva2:1086814
Subject / course
Electrical Engineering
Educational program
Master of Science - Internetworking
Supervisors
Examiners
Available from: 2017-04-04 Created: 2017-04-04 Last updated: 2017-04-04Bibliographically approved

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