Modeling and design of microwave devices based on ferromagnetic nanowires


Première édition

As wireless communication systems are flourishing and operating frequencies are progressively increasing, there exists nowadays a strong demand for RF devices at millimeter wavelengths. Nonmetallic ferromagnetic materials, also called ferrites, have found wide applications in RF technology as they possess the combined properties of a magnetic material and an electrical insulator. The remarkable flexibility in tailoring the magnetic properties, the very high resistivity, price and performance considerations make ferrites the first choice materials for microwave applications. However, the frequency range of operation, the bandwidth, and the aptitude to be integrated in MMICs should be improved.

In this work, a new class of magnetic materials which could overcome the main disadvantages encountered when using ferrites in RF devices operating at millimeter wavelengths is studied. This material, called magnetic nanowired substrate (MNWS), is composed of an array of ferromagnetic nanowires embedded in a polymer substrate. First, the ferromagnetic nature of nanowires yields very high saturation magnetizations, thus operating frequencies higher than 40 GHz. Next, the nanometric wire diameter allows an easy penetration of electromagnetic waves inside the MNWS. Moreover, due to the high aspect ratio of nanowires the desired magnetic properties are obtained without an external magnetic field. This leads to a considerable potential increase of the compactness and ease of integration in MMICs. Various potential applications, such as filters and circulators, of this new material are presented.


Livre broché - En anglais 16,20 €

Spécifications


Éditeur
Presses universitaires de Louvain
Partie du titre
Numéro 47
Auteur
Aimad Saib,
Collection
Thèses de l'École polytechnique de Louvain
Langue
anglais
Catégorie (éditeur)
Sciences appliquées > Informatique > Réseaux et télécommunication
Catégorie (éditeur)
Sciences appliquées > Électricité
Catégorie (éditeur)
Sciences appliquées
BISAC Subject Heading
TEC000000 TECHNOLOGY & ENGINEERING
Code publique Onix
06 Professionnel et académique
CLIL (Version 2013-2019 )
3069 TECHNIQUES ET SCIENCES APPLIQUEES
Date de première publication du titre
01 janvier 2004
Type d'ouvrage
Thèse
Langue originale
anglais

Livre broché


Date de publication
2004
ISBN-13
9782930344775
Ampleur
Nombre de pages de contenu principal : 188
Code interne
70956
Format
16 x 24 x 1,1 cm
Poids
309 grammes
Prix
16,20 €
ONIX XML
Version 2.1, Version 3

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Sommaire


Scientific publications iv

Introduction ix

1 FMR Theory in Magnetic Nanowires 1

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Susceptibility tensor of infinite mediu