자료유형  

 학위논문

Control Number  

0017162462

International Standard Book Number  

9798383205495

Dewey Decimal Classification Number  

537

Main Entry-Personal Name  

Gao, Qian.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of California, Los Angeles., 2024

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2024

Physical Description  

164 p.

General Note  

Source: Dissertations Abstracts International, Volume: 86-01, Section: B.

General Note  

Advisor: Wang, Yuanxun.

Dissertation Note  

Thesis (Ph.D.)--University of California, Los Angeles, 2024.

Summary, Etc.  

요약Magnetic materials offer a unique combination of properties such as non-reciprocity, high permeability, broad tunability, strong frequency dispersion, and nonlinearity. These characteristics made them uniquely valuable in various linear RF devices such as inductors, circulators, isolators, phase shifters, filters, and antennas. Nonlinear RF magnetic devices such as frequency selective limiters and signal-to-noise enhancers have also received significant attention lately. Leveraging on the recent advances in the fabrication of thin film and thick film magnetic materials, many traditional RF magnetic devices can now be integrated on-chip, which opens up ways to supply high-quality factor passives on-chip that are lacking in existing semiconductor-based integrated circuit (IC) process. This dissertation delves into the modeling and design of RF magnetic devices through equivalent circuit models derived from micromagnetic theory. These models provide concise and intuitive representations of the linear and nonlinear spin dynamics and spin wave propagations within RF magnetic materials.The research demonstrates the efficacy of these equivalent circuit models by applying them to various RF devices, including ferrite-loaded strip lines, small antennas, and frequency-selective limiters (FSLs). These models have shown high accuracy in predicting device performance, aligning well with full-wave simulations and empirical data. A significant focus is placed on millimeter-wave resonators and filters using M-type barium hexagonal ferrite, with operational frequencies reaching up to 45 GHz. These devices are optimized for better energy coupling and exhibit promising potential for millimeter-wave applications. This dissertation significantly advances the understanding and application of RF magnetic devices, laying a robust foundation for future innovations. 

Subject Added Entry-Topical Term  

Electromagnetics.

Subject Added Entry-Topical Term  

Applied physics.

Subject Added Entry-Topical Term  

Materials science.

Subject Added Entry-Topical Term  

Nanotechnology.

Subject Added Entry-Topical Term  

Electrical engineering.

Index Term-Uncontrolled  

Equivalent circuit modeling

Index Term-Uncontrolled  

Millimeter wave resonators

Index Term-Uncontrolled  

Radio frequencies

Index Term-Uncontrolled  

Magnetic devices

Index Term-Uncontrolled  

Spin dynamics

Added Entry-Corporate Name  

University of California, Los Angeles Electrical and Computer Engineering 0333

Host Item Entry  

Dissertations Abstracts International. 86-01B.

Electronic Location and Access  

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Control Number  

joongbu:654673