| Summary: | 碩士 === 國立交通大學 === 電信工程研究所 === 108 === In order to develop a real-world environment model to apply time reversal, this thesis develops 3D time reversal techniques. The theory of time reversal was originally applied in the acoustics. Due to the basic principle of time reversal is simple and effective, the theory has been applied in several different fields gradually. In this thesis, we applied time reversal theory in electromagnetic waves and demonstrated it by 3D-FDTD simulations. We present a systematic study for target detection and imaging. To achieve super-resolution focusing beyond Rayleigh criterion, we utilized several dielectric lens (e.g., y-direction classic dielectric lens, z-direction classic dielectric lens, spiral dielectric lens) to increase the diversity of multi-path. At the end of this thesis, we analyzed the pros and cons of several dielectric lens according to multi targets detecting case. We will discover the appropriate dielectric lens based on the results, and a serial of experiments about the dielectric lens is conducted.
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