Microwave Engineering Europe - March 2009 - (Page 7) CONTENTS 7 4 8 10 The cover depicts a scene representing the ever expanding infrastructure associated with wireless communications. As we look to emerging technologies such as WiMAX and LTE with the promise of pervasive coverage, we need more innovative solutions than just throwing up more antennas — maybe femtocells? EDITORIAL DIRECTOR JEAN-PIERRE JOOSTING Tel. +32 2 7400056 email: jean-pierre.joosting@eetimes.be CONTRIBUTING EDITORS COLIN HOLLAND email: colin.holland@btinternet.com JOHN WALKO email: jwalko@cmp.com EDITORIAL ADVISORY BOARD Tom Brazil, University College Dublin, Ireland Marco Lisi, Telespazio, Italy Holger Meinel, DaimlerChrysler Aerospace AG, Germany Marco Guglielmi, ESTEC, The Netherlands Chris Snowden, Filtronic Compound Semiconductor/ University of Leeds, UK. News Comment Focus on Radio: Decade tuning, wide IF instrumentation receiver This paper describes the development of the receive section of an instrumentation transceiver. The radio is designed for high linearity, gain and phase flatness, and is capable of tuning from 0.4 to 4 GHz in 1 Hz steps with an IF bandwidth of 20 MHz. Its performance is intended to be capable of testing 2G, 3G, LTE, and WIMAX systems. Focus on Radio: Multi-standard transceiver IC enables low cost femtocell deployment The future of femtocells depends on resolving a number of key challenges such as functionality and cost. Issues such as timing/synchronisation, radio interference and handover into the femtocell from a traditional macro cell have impacted the design and implementation of the radio part of femtocells. The multiple frequency bands and standards adds further complications. To help address such issues a transceiver IC developed at Lime Microsystems with an operational range between 375 MHz to 4 GHz covers all of the frequency bands specified in 3GPP. Wireless Infrastructure: Networks need femtocells and femtocells need SoCs Femtocells — compact cellular base stations designed to support small numbers of users — have emerged over recent months as vital enablers for wireless data services. Indeed, Dr Alastair Brydon of Analysys has stated: “Femtocells have the potential to transform the telecoms industry.” Wireless Infrastructure: Broadband active filters solve accuracy and matching problems in signal processing applications Few active filters on the market offer bandwidth higher than 2 MHz. Yet today’s new generation broadband receivers push several to tens of MHz, requiring very good noise and distortion performance. Linear Technology has introduced a broad selection of wide bandwidth active filters building blocks intended as drop-in solutions to ease the design task. Modelling a high data-rate 802.16 wireless modem As part of the ITEA MARTES European research project (www.martes-itea.org), THALES needed to model a high data-rate 802.16 wireless modem. Products Calendar 14 ADVERTISING PRODUCTION LYDIA GIJSEGOM Tel +32 (0) 2 740 00 50 email: lydia.gijsegom@eetimes.be CIRCULATION & FINANCE LUC DESIMPEL Tel +32 (0) 2 740 0055 email: luc.desimpel@eetimes.be ART MANAGER JEAN-PAUL SPELIERS Tel +32 (0)2 740 0052 email: jean-paul.speliers@eetimes.be ACCOUNTING RICARDO PINTO FERREIRA Tel +32 (0)2 740 0051 email: financial@eetimes.be SALES DIRECTOR GEERT DE VUYST Tel +32 2 740 0050 email: sales@eetimes.be PUBLISHER ANDRE ROUSSELOT Tel +32 (0)2 740 0053 email: andre.rousselot@cmp.com EUROPEAN BUSINESS PRESS A CMP COMPANY 144 Avenue Eugène Plasky 1030 Brussels - Belgium Tel: +32 (0)2 740 00 50 Fax: +32 (0)2 740 00 59 www.mwee.com VAT Registration: BE 461.357.437 RPM: Brussels Company Number: 0461357437 © 2009 E.B.P. SA, a UBM Company All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording or any information storage or retrieval system without the express prior written consent of the publisher. The contents of Microwave Engineering Europe are subject to reproduction in information storage and retrieval systems. Microwave Engineering Europe is published ten times a year. Apply for a free copy of the journal online at www.mwee.com/ subscribe/ Subscriptions: Microwave Engineering Europe is available on subscription to others at 150 Euro. Refunds on cancelled subscriptions will only be provided at the Publisher’s discretion, unless specifically guaranteed within the terms of the subscription offer. Paid subscription queries tel: +32 2 740 00 50 Printed by Corelio 18 21 24 • • • • • 28 34 Microwave Engineering Europe ● March 2009 ● www.mwee.com http://www.mwee.com http://www.mwee.com/ http://www.mwee.com
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