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COM.ONIXSUITE.9782930344775 03 02 i6doc 01 SKU 70956 02 2930344776 03 9782930344775 15 9782930344775 02 01 00 BC 01 9.45 in 02 6.30 in 03 1.08 in 08 10.90 oz 01 24 cm 02 16 cm 03 1.08 cm 08 309 gr 10 02 47 01 02 Thèses de l'Université catholique de Louvain (UCL) 03 Thèses de l'École polytechnique de Louvain 01 01 Numéro 47 Modeling and design of microwave devices based on ferromagnetic nanowires 1 A01 01 Onixsuite Contributor ID 14258 Aimad Saib Saib, Aimad Aimad Saib Aimad Saib was born in Fez, Morocco, in 1978 and received the Electrical Engineer degree in 1999 from Université Ibnou Zohr, Agadir, Morocco, and the Master of Science degree in Propagation telecommunications and remote sensing from the Université de Nice-Sophia Antipolis, Electronics Antennas and Telecommunications Laboratory (LEAT), Nice, France, in 2000. He received a Ph.D. in Applied Sciences from the Université catholique de Louvain, Microwave Laboratory, Louvain-la-Neuve, Belgium. 1 01 eng 02 eng 00 188 03 10 TEC000000 24 INTERNET Réseaux et télécommunication 24 INTERNET Électricité 24 INTERNET Sciences appliquées 29 2012 3069 TECHNIQUES ET SCIENCES APPLIQUEES 01 06 03 00 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. 02 00 As wireless communication systems are flourishing and operating frequencies are progressively increasing, there exists nowadays a strong demand for RF devices at millimeter... 03 00 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. 02 00 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... 04 00 Scientific publications ivIntroduction ix1 FMR Theory in Magnetic Nanowires 11.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Susceptibility tensor of infinite mediu 01 00 03 02 http://www.i6doc.com/resources/titles/28001100482710/images/5fc7c9bd1fcb12799f02da8adfa4954f/THUMBNAIL/9782930344775.jpg 09 00 03 02 01 D502 https://i6doc.com/resources/publishers/35.jpg 10 00 03 02 01 D503 https://i6doc.com/resources/publishers/73.png 06 3052405007518 Presses universitaires de Louvain 01 01 Dilicom PULOUVAIN 06 3052405007518 Presses universitaires de Louvain 01 Presses universitaires de Louvain http://pul.uclouvain.be/ 04 01 20040101 11 20040101 02 WORLD 02 01 GCOI 28001100482710 WORLD 04 03 06 3012405004818 CIACO - DUC 33 www.i6doc.com http://www.i6doc.com 01 2 20 1 02 00 02 02 STD 02 16.20 01 R 6.00 15.28 0.92 EUR