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Conception Et Realisation Dun Sondeur De Canal Multi Capteur Utilisant Les Correlateurs Cinq Ports Pour La Mesure De Propagation A Linterieur Des Batiments
Download Conception Et Realisation Dun Sondeur De Canal Multi Capteur Utilisant Les Correlateurs Cinq Ports Pour La Mesure De Propagation A Linterieur Des Batiments full books in PDF, epub, and Kindle. Read online Conception Et Realisation Dun Sondeur De Canal Multi Capteur Utilisant Les Correlateurs Cinq Ports Pour La Mesure De Propagation A Linterieur Des Batiments ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Measurements using Optic and RF Waves by : Frédérique de Fornel
Download or read book Measurements using Optic and RF Waves written by Frédérique de Fornel and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific and technical basis underpinning modern measurement techniques used for electromagnetic quantities and phenonema is necessarily wide-ranging, as the electromagnetic environment spans all possible frequencies and wavelengths. Measurements must be applicable in fields as varied as nanotechnologies, telecommunications, meteorology, geo-location, radio-astronomy, health, biology, and many others. In order to adequately cover the many different facets of the topic, this book provides examples from the entire range of the electromagnetic spectrum — covering frequencies from several hertz to terahertz, and considering wavelength distances ranging from nanometers to light-years in optics. It then provides coverage of the various measurement techniques using electromagnetic waves for various applications, devoting chapters to each different field of application. This comprehensive book gives detailed information on: the various techniques and methods available to measure the key characteristics of electromagnetic waves, in terms of the local field and phase for a broad field of frequencies; determination of physical quantities such as distance, time, etc., using electromagnetic properties; new approaches to measurements in the field of electromagnetic distribution in complex structures media, such as biological tissues and in the nanosciences.
Book Synopsis Sondeur de canal multi-capteur utilisant les corrélateurs cinq-ports by : Van Yem Vu
Download or read book Sondeur de canal multi-capteur utilisant les corrélateurs cinq-ports written by Van Yem Vu and published by Presses Academiques Francophones. This book was released on 2014-10-01 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le correlateur cinq-port en technologie micro ruban compose d'un anneau a cinq branches et de trois detecteurs de puissance permet de calculer precisement le rapport complexe entre deux signaux hyperfrequences a partir des tensions mesurees aux trois sorties et d'un traitement numerique associe. Le cinq-port a un faible cout de realisation et s'avere etre moins sensible aux desappariements de phase et d'amplitude. De plus, il peut fonctionner dans une bande de frequence large. Nous proposons dans ce travail un sondeur de canal multi-capteur utilisant les correlateurs cinq-ports pour la mesure de propagation a l'interieur des batiments. Ce sondeur; compose d'un reseau de 8 antennes quasi-Yagi et d'un reseau de 8 cinq-port en reception; permet de mesurer a la fois les retards de propagation et les directions d'arrivee (DDAs) en azimut et en elevation des trajets multiples. La difference de phase des signaux captes par les antennes permet de calculer les DDAs et les retards de propagation sont estimes a partir de la difference de phase des signaux mesures a deux frequences consecutives dans chaque cinq-port dans la bande 2.3 GHz a 2.5 GHz avec un pas de 4 MHz.
