Uniaxial bianisotropic transformer A J Viitanen, I V Lindell. slab as a polarization Electromognetics laboratory, Department of Electrical Engineering, * Helsinki University of Technology, Otakaari 5 A, SF~02150 Espoo, FINLAND. Abstract Uniaxial bianisotropic medium is a generalization of the wellstudied bi~isotropic and chiral media. Such a medium is obtained, for example, when microscopic hel

Chiral properties of lossy n-turn helices in the quasistationary approximation using a transmission-line model L R Arnaut, L E Davis Department of Electrical Engineering and Electronics The Universityof Manchester Instituteof Science and Technology PO Box 88, Manchester M60 1QD, UK Tel:+4461 2363311; Fax: +4461 228 7040; e-mail: arnaut-uk.ac.umist.csc Abstract Electromagnetic activity due to the

Indoor propagation measurements at 2.45GHz and 17GHz D. Laughton, C. Free School f Electronic Engineering, o Middlesex University, Bounds Green Rd,LondonN 11 2NQ, UnitedKingdom. Tel:+44 81 362 5734; Fax +44 81 362 5736 Abstract Microwave propagation measurements taken within an indoor environment are presented which illustrate the advantages to be obtained by using circularly polarized signals r

Wave equations and solutions for split-step numerical modelling o~ propagation in urban areas L. Saini, U. Casiraghi ALCATEL TELETTRA Radio Space and Defence Division Via Trento 30 20059 Vimercate (Italy) Tel. +39 39 6864433 Fax +39 39 6081483 Abstract Radiowave propagation in built-up areas such as in terrestrial mobile and urban fixed radio link services is limited to short distances. For this

Rainfall rates distributions in Spain and suggestions about the CCIR method to calculate rain attenuation L. Mercader(*) and A. Benarroch(**) (*1 Universidad Publico de Navarro, Spain. (**1 Universidad Politecnica de Madrid, Spain. Abstract The reliability of CCIR attenuation prediction methods is discussed in this paper. The higher accuracy of the RO.Ol% contour maps against the climatic zones m

Bistatic scattering of microwave and millimeter wave by a melting layer of precipitation W Zhang Helsinki University of Technology, Radio Laboratory, SF 02150 Espoo, FINLAND. TEL.: +35804512255; FAX +3580451 2152; e-mail WZH-radiohutfi Otakaari 5A, Abstract A melting layer of precipitation is assumed to be composed of melting snow particles and the melting layer is related to the physical constan

Simulation of atmospheric turbulence eHects on terrestrial millimeter wave links H. Vasseur, D. Vanhoenacker Microwaves Laboratory U.C.L. B6timent Moxwell- Place du Levant, 3 B-1348 Louvain-Ia-Neuve, Belgium FAX: +321047 8705 Abstract The Microwaves Laboratory has been involved for more than ten years in the study of scintillation occurring on signals propagating on a slant-path. A new model has

An MMIC local oscillator for 16QAM digital microwave radio systems Hideo Suwaki, Tadao Nakagawa Takashi Ohira and Abstract MMIC Local Oscillator for 16 QAM digital microwave systems has been developed. The Local oscillator is constructed with a low phase noise VCO and a new PLL for low phase noise performance. This low phase noise performance allows the developed MMIC local oscillator to be used

High efficiency, highly compact L-Band power amplifier for DEcr application A. Herrera, E. Artal, E. Puechberty+, D. Masliah+ * Dpto. de Electronica. Univ de Cantabria. Los Castros sin 39005 Santander. Spain. TEL.(34) 42 20.1392Fax (34) 42 20.14.02 +LEP Philips Microwave Limeil 22, avenue Descartes, 94453 Limeil-Brevannes. France TEL.133) 1456724Fax (33)145106953 Abstract A high efficiency power

Microwave techniques improve multi-Gbit/s for optical communication systems Gerhard Hanke Research Institute of Deutsche Bundespost Telekom, FI 42a Box 10 00 03 D-61 00 Darmstadt, Germany. Tel.: +496151 833526; FAX: +496151 834465 circuitry / P.O. Abstract Experimental multi-GbitJs systems up to 20 GbitJs have been developed and tested in the Research Institute of Deutsche Bundespost Telekom.