Microwave Engineering Europe - June 2008 - (Page 7)

CONTENTS 7 9 10 13 COVER The cover depicts the latest 13 Gbps family of digital logic building blocks from Hittite Microwave Products. They deliver reduced jitter, programmable output voltage and lower power consumption in demanding high-speed wideband applications. 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. Comment News Cover feature: Hittite’s 13 Gbps high speed logic family provides reduced jitter, programmable output voltage and lower power consumption Over the last few years, the transition from analog to digital RF technology has generated the need for high performance digital logic at higher data rates. As high speed digital communication has evolved and along with the emphasis on s-parameter measurements, high speed logic and control circuits must offer lower random and deterministic jitter speciﬁcations, lower propagation delay, reduced data skew values and lower power consumption. 16 Antennas: Designing and simulating a wireless LAN antenna Electromagnetic and EM-circuit co-simulation of a 2.4-GHz polarization diversity printed antenna with switching network. 60 GHz: Achieving the ultimate wireless dream Using sophisticated design and fabrication techniques, research labs are getting closer to realizing 60 GHz chips in silicon. When that happens, consumer price points can be met and wireless design becomes a whole new ballgame. But ﬁrst, engineers must overcome ﬁve major challenges. Radar technology: New radar developments include HFETs to challenge DMOS/LDMOS and a 77-GHz CMOS PA for automotive applications Testing raises concerns over 802.11-based high-speed Bluetooth Many in the industry are concerned about the known interference issues that will result between the 802.11 radio in the Bluetooth device and other IMT-2000 services operating in adjacent frequencies, such as WiMAX, LTE, UMTS and WCDMA. 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: sonia.stouti@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: aroussel@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 © 2008 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 Perka. 20 22 26 32 IP2 & IP3 design considerations with direct conversion I/Q demodulator receiver • • • • • 38 46 Products Calendar Microwave Engineering Europe ● June 2008 ● www.mwee.com http://www.mwee.com http://www.mwee.com

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Microwave Engineering Europe - June 2008 Contents Comment News Cover Feature Designing and Simulating a Wireless LAN Antenna 60GHz: Achieving the Ultimate Wireless Dream New Radar Developments Include HFETs to Challenge DMOS/LDMOS and a 77-GHz CMOS PA for Automotive Applications Testing Raises Concerns Over 802.11-Based High-Speed Bluetooth IP2 & IP3 Design Considerations with Direct Conversion I/Q Demodulator Receiver Products Calendar

Microwave Engineering Europe - June 2008

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