Knowledge Centre
Find a document written by the best international scientists in our secure database.
24776 documents found.
Concurrent Field and Device Time Domain Numerical Simulation of Microwave Devices
Concurrent Field and Device Time Domain Numerical Simulation of Microwave Devices R. Sorrentino1, G. Emili1, G. Stopponi 1, F. Alimenti1, P. Ciampolini2 and L. Roselli1 1 DIEI, Università di Perugia, via G. Duranti 93, 06125 Perugia, Italy. DII, Università di Parma, Parco Area delle Scienze 181/A, 43100 Parma, Italy. Dipartimento di Ingegneria Elettronica e dell'Informazione (DIEI), Università di
Microwave Photonics
MICROWAVE PHOTONICS D. Jäger and A. Stöhr Gerhard-Mercator-Universität Duisburg ZHO - Optoelektronik Lotharstrasse 55, D-47057 Duisburg, Germany e-mail: D.Jaeger@oe.uni-duisburg.de; stoehr@uni-duisburg.de ABSTRACT Microwave photonics can be generally defined as the study of high-speed photonic devices operating at microwave or millimeterwave frequencies and their use in microwave or photonic syst
Digital Control of Power Amplifiers for Wireless Communications
DIGITAL CONTROL OF POWER AMPLIFIERS FOR WIRELESS COMMUNICATIONS P.M.Asbeck, I. Galton, L.E.Larson, X.Zhang, M.Iwamoto, J.Hinrichs and J.Keyzer Electrical and Computer Engineering Department University of California, San Diego La Jolla, CA, USA 92093-0407 E-mail: asbeck@ece.ucsd.edu ABSTRACT The advance of CMOS-based digital circuits enables new strategies for optimisation of wireless transmitters.
Mixing of Technologies for Adaptive Beamforming Implementation
MIXING OF TECHNOLOGIES FOR ADAPTIVE BEAMFORMING IMPLEMENTATION Seong-Sik Jeon*, Yuanxun Wang*, Yongxi Qian** and Tatsuo Itoh* * Department of Electrical Engineering, University of California, Los Angeles 405 Hilgard Avenue, Los Angeles, CA 90095, USA Email: sjeon@ee.ucla.edu ** Microsemi/Micro WaveSys 6033 W. Century Blvd., Suite #1200, Los Angeles, CA 90045, USA ABSTRACT This paper describes the
Active Integrated Antennas
ACTIVE INTEGRATED ANTENNAS P. S. Hall and P. Gardner The University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK p.s.hall@bham.ac.uk p.gardner@bham.ac.uk ABSTRACT Active integrated antennas are a synergistic mixture of circuit and antenna technologies, that has lead to a range of innovative structures and geometries, which are now being developed for inclusion in a number of practical applica
Monolithic Millimetre Wave Source Incorporating Planar Surface Wave Assisted Antenna
MONOLITHIC MILLIMETER-WAVE SOURCE INCORPORATING PLANAR SURFACE WAVE ASSISTED ANTENNA Kevin M. K. H. Leong, Vesna Radisic1, Lorene Samoska2, Yongxi Qian, and Tatsuo Itoh Department of Electrical Engineering University of California, Los Angeles, 405 Hilgard Ave., Los Angeles, CA 90095 E-mail: kleong@ee.ucla.edu 1 HRL Laboratories, LLC, Malibu, CA 90265 Jet Propulsion Laboratory, Pasadena, CA 9110
Oscillator Locking-Bandwidth Enhancement for Coupled-Oscillator Applications
Oscillator Locking-Bandwidth Enhancement for Coupled-Oscillator Applications Xing Wang, Michael Colwell and L. Wilson Pearson Holcombe Department of Electrical and Computer Engineering Clemson University, Clemson, SC 29634-0915, USA pearson@ces.clemson.edu ABSTRACT Coupled-oscillator systems offer a means of phase generation for millimeter wavelength applications. Random phase error in coupled-os
A Compact, Low Cost, Low Power YIG Synthesiser for Long Haul Applications
Marco Fanesi*, Roberto Tosini*, Marco Gris*, Barbara Gabbrielli*, Tullio Rozzi** * A Compact, Low Cost, Low Power YIG Synthesiser for Long Haul Applications. Alcatel Italia (WTD), str. Provinciale per Monza 33, 20059 Concorezzo (MI), Italy ** Università di Ancona E-Mail: marco.gris@netit.alcatel.it, marco.fanesi@netit.alcatel.it , roberto.tosini@netit.alcatel.it, barbara.gabbrielli@netit.alcate
Fully Automatic Laser-Adjustable Ka-Band Phaselocked Ring Resonator Signal Source
)XOO\ $XWRPDWLF /DVHU$GMXVWDEOH .D%DQG 3KDVHORFNHG 5LQJ 5HVRQDWRU 6LJQDO 6RXUFH Martin Schallner, Martin Kirsch, Stefan Kern, Ulf Müller, Udo Pursche1 and Willibald Konrath Marconi Communications GmbH, Microwave Technology Centre, Gerberstr. 33, D-71522 Backnang, Germany Phone: +49 (0)7191-13-3341, Fax: +49 (0)7191-13-63341, E-Mail: Martin.Schallner@marconi.com $%675$&7 A new and very compact K
Using a Phase Locked Backward Oscillator (BWO) to Extend the Dynamic Range of a Vector Network Analyzer at Submillimetre Wavelengths
USING A PHASE-LOCKED BACKWARD-WAVE OSCILLATOR (BWO) TO EXTEND THE DYNAMIC RANGE OF A VECTOR NETWORK ANALYZER AT SUBMILLIMETRE WAVELENGTHS Jussi Säily, Juha Mallat, Antti V. Räisänen Radio Laboratory, MilliLab, Helsinki University of Technology P.O. Box 3000, FIN-02015 HUT, Finland Tel.: +358-9-451 2939, Fax: +358-9-451 2152 Email: Jussi.Saily@hut.fi ABSTRACT The design and construction of a submil