The reversal of the magnetization under the influence of a field pulse has been previously predicted to be an incoherent process with several competing phenomena such as domain wall relaxation, spin wave-mediated instability regions, and vortex-core mediated reversal dynamics. However, there has been no study on the direct observation of the switching process with the aid of a microwave signal ...

Through wall imaging (TWI) using microwave radar system is an experimental approach in real time to collect the information about the living/nonliving target object hidden behind the wall made of any dielectric material and unknown thickness. The true and exact information of the target object is dependent not only on the wall parameters (thickness and dielectric constant) but also on the opera...

This paper presents a data focusing method (DFM) to image extended targets using the multiple signal classification (MUSIC) algorithm. The restriction on the number of transmitter-receiver antennas in a microwave imaging system deteriorates profiling an extended target that comprises many point scatterers. Under such situation, the subspace-based linear inverse scattering methods, like the MUSI...

Recent developments in fifth-generation (5G) wireless communications networks are creating an increasingly crowded electromagnetic environment at microwave (3–30 GHz) and millimeter-wave (30–300 frequencies. Radiation these bands can provide non-destructive testing of defects shielded structures using non-ionizing signals. In actual building setting where 5G signals present, passive imaging the...

This work focuses on developing a 3D microwave imaging (MWI) algorithm based Huygens principle (HP). Specifically, novel, fast MWI device (MammoWave) has been presented and exploited for its capabilities of extending image reconstruction from 2D to 3D. For this purpose, dedicated phantoms containing structured inclusion have prepared with mixtures having different dielectric properties. Phantom...