Knowledge Centre
Find a document written by the best international scientists in our secure database.
24776 documents found.
Astigmatic Beam Tracing for Propagation Modelling
Astigmatic Beam Tracing for Propagation Modelling Emidio Di Giampaolo1, Fernando Bardati2 and Marco Sabbadini3 1 DIE, Universita dell'Aquila, Monteluco di Roio, 67400 L'Aquila, Italy emidio@ing.univaq.it 2 DISP, Universita Roma Tor Vergata, 00133 Roma, Italy bardati@disp.uniroma2.it 3 TOS-EEA, European Space Agency, Keplerlaan 1, 2201 AZ, Noordwijk, The Netherlands marco@xe.estec.esa.nl ABSTR
3D Ray-Tracing Method for Indoor Propagation Modelling at 60 GHz
3D Ray-tracing method for indoor propagation modelling at 60 GHz Lionel Chaigneaud1, Valéry Guillet1 and Rodolphe Vauzelle2 France Télécom 6, avenue des Usines - BP 382 - 90007 Belfort, France lionel.chaigneaud@francetelecom.com , valery.guillet@francetelecom.com Université de Poitiers - IRCOM-SIC Bat. SP2MI - Teleport 2 - BP 30179 86962 Futuroscope Chasseneuil Cedex, France vauzelle@sic.sp2mi.uni
A Flexible Multistandard Software Radio Frontend Concept
A FLEXIBLE MULTISTANDARD SOFTWARE RADIO FRONTEND CONCEPT W. Schacherbauer 1 , A. Springer 1 , C.C.W. Ruppel 2 , R. Weigel 1 1) Institute for Communications and Information Engineering, University of Linz Altenbergerstr. 69, A-4040 Linz, Austria, Email: schacherbauer@mechatronik.uni-linz.ac.at 2) Epcos AG, Anzingerstr. 13, D-81671 Munich, Germany ABSTRACT An analog radio frontend flexibly adaptabl
Resource Control in a Distributed Intelligent Re-configurable Mobile Network
Resource Control in a Distributed Intelligent Re-configurable Mobile Network R. E. Ramos1, K. Madani1, S. Imre 2, J. Kovács2, Á. Gyarmathy2, G. Hornyák2, P. Kacsuk2 1 University of Westminster, London, England, ramos@cmsa.westminster.ac.uk 2 MTA SZTAKI , Budapest, Hungary, imre@hit.bme.hu, smith@sztaki.hu ABSTRACT The SoftWare Radio (SWR) concept is one of the emerging new technologies to solve
Digital IF and Mixed Signal Processing Technology for Software Defined Radio Transmitter
DIGITAL IF AND MIXED SIGNAL PROCESSING TECHNOLOGY FOR SOFTWARE DEFINED RADIO TRANSMITTER Dimitrios Efstathiou Analog Devices, 7910 Triad Center Drive, Greensboro, NC 27409, USA e-mail: dimitrios.efstathiou@analog.com ABSTRACT Software Defined Radio is a rapidly evolving technology that provides an efficient mechanism for the implementation of multi-band, multi-mode wireless devices that can be en
Reconfigurable Terminals for Mobile Communication Systems
Reconfigurable Terminals for Mobile Communication systems Stephen McLaughlin, University of Edinburgh Mike Barnard, Philips Research Labs Introduction Within one year of launching their i-mode (internet enabled) mobile phone service the Japanese had attracted 4 million subscribers to this new service. If nothing else this shows clearly that the mobile phones of the future will be much more than p
Multiple Modulus N+1/2 Fractional-N Frequency Divider
Multiple Modulus N+1/2 Fractional-N Frequency Divider C.C. Boon, M.A. Do, K.S. Yeo and J.G. Ma Division of Circuits and Systems School of Electrical and Electronic Engineering Singapore 6329798 E-mail : PH318870@ntu.edu.sg Phone : 0065-7906947 Fax : 0065-7933318 Abstract - This paper discusses the design of a new multiple modulus fractional-N frequency divider. The new divider is able to reduce t
CMOS Broadband Low Noise Amplfiers for Software Radio
CMOS Broadband Low Noise Amplfiers for Software Radio Manh Anh Do, Wei Yang, Kiat-Seng Yeo and Jian-Guo Ma School of Electrical and Electronic Engineering Nanyang Technological University Singapore 639798 emado@ntu.edu.sg ABSTRACT This paper describes the design of three broadband low noise amplifiers (LNA) for the 0.25 µm CSM (Chartered Semiconductor Manufacturing Ltd.) process. The design is tar
Harmonic Minimization in Dual Band Single Pole Type MMIC Switches
HARMONIC MINIMIZATION IN DUAL BAND SINGLE POLE TYPE MMIC SWITCHES S. Glynn * , H. Kawasaki , A. Lawrenson , J.C. Clifton * Sony SDE, The Crescent, Jays Close, Basingstoke, Hampshire RG22 4DE United Kingdom * stuart.glynn@sde.eu.sony.com Abstract The second harmonic (2fo) level at the antenna port generated by an MMIC antenna switch can be reduced significantly by careful selection of the sour
WCDMA Transmitter Implementation Challenges and Integrated ASIC Architecture
WCDMA Transmitter Implementation Challenges and Integrated ASIC Architecture Bala Ramachandran, Aravind Loke, John Vasa, Madhukar Reddy, Sabah Khesbak Conexant Systems Inc., 4311 Jamboree Road, M/S P03-300, Newport Beach, CA 92660 bala.ramachandran@conexant.com, aravind.loke@conexant.com, john.vasa@conexant.com, madhukar.reddy@conexant.com, sabah.khesbak@conexant.com ABSTRACT The demand for integr