Novel Cladding Designs for Engineering Electromagnetic Scattering

The rapid development of metamaterials and meta surfaces has revolutionized the field of electromagnetic wave manipulation, offering unprecedented control over wave propagation, reflection, and refraction. These engineered materials, characterized by their unique ability to exhibit properties not found in natural substances, have paved the way for a wide range of applications, particularly in the areas of next-generation antenna designs and electromagnetic cloaking. In this thesis, we propose antenna systems that address the inherent challenges associated with impedance matching and radiation/reception efficiency. By enclosing the antenna with suitably designed spherical metamaterials or ultrathin meta surfaces, the impedance matching is improved and the overall efficiency of the antenna is significantly enhanced. Furthermore, we explore meta surface cloaking with a generalized surface impedances matrix to manipulate the scattering and absorption cross sections. Utilizing Lorenz-Mie scattering theorem, we thoroughly examine tensor-form surface impedance and the corresponding scattering properties, aiming to find the optimal cloaking strategy under different application scenarios .

Author dc:creator

• Chia-Heng Sun (21098129)

• Engineering
• Electronics and Electrical

Statement dc:rights

• In Copyright
• Open Access after 2028-01-01

DOI dc:identifier

https://doi.org/10.25417/uic.31451647.v1

OAI identifier oai:identifier

oai:figshare.com:article/31451647