Increasing the Capacity of Multiple Antenna Systems when Using Orthogonal Polarized Antennas Christos Oikonomopoulos-Zachos, Wilhelm Keusgen Aachen University, Institute of High Frequency Technology, Melatener Straße 25, D­52056 Aachen, Germany, +49 241 80 7942, {oikonomopoulos, keusgen}-ihf.rwth-aachen.de Abstract-- In this paper different multi-antenna configurations in an indoor environment at

A Novel Antenna Array Calibration with a Linear Space Error Correction C. Sun2 , A. Hirata1 , T. Ohira1 , H. Yamada1 , N. C. Karmakar2 ATR Adaptive Communications Research Laboratories 2-2-2 Hikaridai, "Keihanna Science City" Kyoto, 619-0288, Japan 2 School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore Nanyang Avenue 639798, Singapore, E-Mail: csun-ieee.org

Non circular sources localization with ESPRIT Ahmed Zoubir, Pascal Charg´, Yide Wang e IRCCyN/SETRA UMR CNRS 6597 Ecole polytechnique ­ University of Nantes BP 50609, 44306 Nantes, FRANCE e-mail : (ahmed.zoubir/pascal.charge/yide.wang)-polytech.univ-nantes.fr Abstract--This paper presents a new direction finding algorithm for non circular sources, based on the estimation of signal parameters via

Direction-of-Arrival Estimation for Wideband Smart Antennas Using Frequency-Domain Frequency-Invariant Beamformers Tuan Do-Hong1 , Franz Demmel2 , Peter Russer1 Munich University of Technology, Institute for High-Frequency Engineering, Arcisstrasse 21, 80333 Munich, Germany, tel. +49-89-289-23373, e-mail: do-hong-ei.tum.de 2 Rohde & Schwarz GmbH & Co. KG, Muehldorfstrasse 15, 81671 Munich, Germany

A Novel Varactor Diodeless Push-Push VCO with Wide-Tuning Range Moon-Que Lee1, Seong-mo Moon1, and Sangbo Min2 1 Depatment of Electrical and Computer Eng. University of Seoul, Dongdaemun-ku Seoul, 130-743 Korea, mqlee-uos.ac.kr 2 Microline, Seoul, Korea The base port of the individual VCO is connected with a hair-pin resonator which makes a low-phase noise characteristic. RF short impedance is i

Single-ended/Differential Conversion Integrated Circuit for the 5-6 GHz Band Manh Anh Do, Guoqiang Yan, Jian-Guo Ma, and Kiat-Seng Yeo Nanyang Technological University, School of Electrical and Electronic Engineering, Nanyang Avenue, Singapore 639798, Phone: 0065-67905439 Abstract - This paper describes a CMOS single-ended to differential conversion circuit for use as an RF building block. The ci

Theory and Design of the Experimental Super-Broadband Digital Attenuator O.V. Stoukatch Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia, e-mail: ird-tusur.ru, tel.: 7-3822-417527 Abstract -- A new theoretical results and experimental model of the super-broadband code voltage-controlled attenuator with low phase shift is considered. It is proven that phase invariance achieved i

A Highly Linear Broadband Down-converter for Direct Conversion Receivers Chakib Belkhiri1, Serge Toutain1, Tchanguiz Razban1 1 IRCCyN-SETRA, Rue C.Pauc, BP 50609, 44306 Nantes cedex 03, France, phone: +33 (0) 2 40 68 32 14 in the useful band, and thus, filtering cannot anything. The second-order distortion is not only due to the intermodulation of the wanted channel, but all the adjacent channels

FBAR filters ­ key components for future cellular RF miniaturization Juha Ellä1, Helena Pohjonen1, Janne Kyläkoski1, Mervi Kulojärvi1, Erkki Kuisma1 1 Nokia Mobile Phones Ltd, P.O.BOX 86, FIN-24101 SALO, FINLAND substrate to enable the resonators to vibrate as free structures. This can be done either by mechanical or acoustical decoupling. The first approach results in some form of micromechanica

Coexistence of two DVB-T overlay networks for broadcasting and a mobile communication downlink Alexey Nazarov1, Juergen Winter2 , Ingo Gaspard3, Rolf Jakoby4 Technische Universitaet Darmstadt, Institut of Microwave Engineering, Merckstrasse 25, 64283 Darmstadt, Germany, phone: +49 6151 16 3617 2 Fachhochschule Wiesbaden, Am Brückweg 26, 65428 Rüsselsheim, Germany, phone: + 49 6142 898 208 3 T-Syst