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Compact Internal Multi-Band Antennas for Mobile Handsets
Compact Internal Multi-Band Antennas for Mobile Handsets Yong-Xin Guo, Irene Ang, and M.Y.W. Chia Institute for Infocomm Research 20 Science Park Road, #02-34/37, TeleTech Park, Science Park II, Singapore 117674, Phone: 65-68709165 Email: guoyx@i2r.a-star.edu.sg Abstract -- A novel compact internal quad-band handset antenna for covering the GSM900, DCS1800, PCS1900, and ISM2450 bands is presented.
Surface-mountable metalized plastic waveguide filter suitable for high volume production
Surface-mountable metalized plastic waveguide filter suitable for high volume production Thomas J. Müller, Wilfried Grabherr, Bernd Adelseck EADS, Microwave Factory, Woerthstrasse 85, 89077 Ulm, Germany E-mail: thomas.j.mueller@sysde.eads.net Abstract -- A millimeter-wave waveguide filter suitable for surface mounting has been designed and realized using plastic injection molding and metal coating
Direct-Coupled Filter utilizing Ridge-Loaded Cavities
Direct-Coupled Filter utilizing Ridge-Loaded Cavities Vlad Lenive1, John Ness2 1 COMDEV Europe, Microwave Product Group, Triangle Business Park, HP22 5SX Aylesbury, Buckinghamshire, UK, Ph: +44 1296 616510 2 EM Solutions, 101 Hyde Rd., 4104 Yeronga, Australia, Ph: +617 3392 7600 mode H10 resonating at the desired frequency determined by the length of the cavity in the longitudinal (z-) direction
Contributions to the Analysis and Design of All-Inductive Filters with Dielectric Resonators
Contributions to the Analysis and Design of All-Inductive Filters with Dielectric Resonators V.E. Boria1, M. Bozzi2, D. Camilleri3, A. Coves3, H. Esteban1, B. Gimeno3, M. Guglielmi4, L. Polini3 Departamento de Comunicaciones, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia (Spain) 2 Dipartimento di Elettronica, Universitá degli Studi di Pavia, Via Ferrata 1, 27100 Pavia (It
Moderate Bandwidth Filter for Multiplexer Applications
Moderate Bandwidth Filter for Multiplexer Applications Isidro Hidalgo-Carpintero, Manuel J. Padilla-Cruz Alcatel Espacio, c/ Einstein 7, PTM, Tres Cantos, 28760 Madrid, Spain Tel.: +34918077960, Fax: +34 918077999, E-Mail: isidro.hidalgo_carpintero@alcatel.es Abstract -- A new single mode dielectric resonator filter in metallic housing (patent pending) for Ku-Band Input Multiplexers (IMUXes) for s
A Capacitively Coupled Waveguide Filter with Wide Stop-Band
A Capacitively Coupled Waveguide Filter with Wide Stop-Band Wolfgang Menzel1, Andreas Müller2, Frank Bögelsack1 1 University of Ulm, Microwave Techniques, D-89069 Ulm, Germany, Phone +49-731-50-26350 2 now with Robert Bosch GmbH, D-70049 Stuttgart, Germany ABSTRACT -- Concept, design and results of waveguide filter with improved stop-band performance are presented. The usual spurious pass bands
Linearization Technique for Reducing Third- and Fifth-Order Intermodulation Distortion Products in Multichannel Amplifiers
Linearization Technique for Reducing Third- and Fifth-Order Intermodulation Distortion Products in Multichannel Amplifiers Natasa Males-Ilic1, Bratislav Milovanovic2, Djuradj Budimir1 University of Westminster, Department of Electronic Systems, 115 New Cavendish Street, London W1W 6UW, UK, phone: +44(0)2079115139 University of Nis, Faculty of Electronic Engineering, Beogradska 14, 18000 Nis, Serbi
Effects of Look-Up Table Size on Adaptive Predistortion Linearizer Systems with Error Sources
Effects of Look-Up Table Size on Adaptive Predistortion Linearizer Systems with Error Sources Bo Shi1, Weiyun Shan1, Lars Sundström2 2 Institute for Infocomm Research, 117 674 Singapore Ericsson Mobile Platforms AB, SE-221 83 Lund, Sweden In the design of a LUT based predistorter, table size is obviously one of the most important parameters. As the cancellation of IMD relies on the predistort fun
An Analytical Approach to LINC Power Combining Efficiency Estimation and Optimization
An Analytical Approach to LINC Power Combining Efficiency Estimation and Optimization A. Birafane and A. Kouki LACIME École de Technologie Supérieure 1100 Notre-Dame W., Montreal, QC, Canada, H3C 1K3 Email : abirafane@ele.etsmtl.ca Phone: 514-396-8800 ext: 8975 Fax: 514-396-8684 Abstract A new approach for studying the combiner efficiency in a LINC amplifier based on analytical expressions
Feedforward amplifier using power sensors for the loop balancing
Feedforward amplifier using power sensors for the loop balancing Michael E. Gadringer, Holger Arthaber, Gottfried Magerl Vienna University of Technology, Institute of Electrical measurement and Circuit Design, Gußhausstr. 25/354, 1040 Vienna, Austria, Phone: +43 1 58801 354 01 Abstract-- Adaptively controlled feedforward amplifiers are discussed in a large number of publications over the past year