Modeling and design of microwave devices based on ferromagnetic nanowires


First Edition

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.


Paperback - In English 16.20 €

Specifications


Publisher
Presses universitaires de Louvain
Title Part
Numéro 47
Author
Aimad Saib,
Collection
Thèses de l'École polytechnique de Louvain
Language
English
Publisher Category
Applied Sciences > Computer Science > Networks and telecommunications
Publisher Category
Applied Sciences > Electricity
Publisher Category
Applied Sciences
BISAC Subject Heading
TEC000000 TECHNOLOGY & ENGINEERING
Onix Audience Codes
06 Professional and scholarly
CLIL (Version 2013-2019)
3069 TECHNIQUES ET SCIENCES APPLIQUEES
Title First Published
01 January 2004
Type of Work
Thesis
Original Language
English

Paperback


Publication Date
2004
ISBN-13
9782930344775
Extent
Main content page count : 188
Code
70956
Dimensions
16 x 24 x 1.1 cm
Weight
309 grams
List Price
16.20 €
ONIX XML
Version 2.1, Version 3

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Contents


Scientific publications iv

Introduction ix

1 FMR Theory in Magnetic Nanowires 1

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

1.2 Susceptibility tensor of infinite mediu