Focused Microwave Radiometry, aiming at measuring tissue temperature and conductivity distributions inside the human body, is the technique implemented in the development of a prototype non-invasive microwave imaging system operating at 3.5GHz, for feasible brain intracranial applications. The novelty of the proposed methodology consists in the use of an ellipsoidal conductive wall cavity that ...

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 ...

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...

A coarray-based aperture synthesis scheme using subarrays and post-data acquisition beamforming is presented for through-the-wall wideband microwave imaging applications. Various effects of the presence of the wall, such as refraction, change in speed, and attenuation, are incorporated into the beamformer design. Simulation results verifying the proposed synthetic aperture technique for a TWI s...

ARTICLE INFO ABSTRACT ARTICLE HISTORY: Received 27 October 2013 Revised 28 November2013 Accepted 4 December 2013 Recently, time reversal (TR) method, due to its high functionality in heterogeneous media has been widely employed in microwave imaging (MI) applications. One of the applications turning into a great interest is through-wall microwave imaging (TWMI). In this paper, TR method is appli...

Breast cancer is the leading cause of death among females, early diagnostic methods with suitable treatments improve the 5-year survival rates significantly. Microwave breast imaging has been reported as the most potential to become the alternative or additional tool to the current gold standard X-ray mammography for detecting breast cancer. The microwave breast image quality is affected by the...

Microwave imaging is an alternate breast cancer detection technique that uses microwaves to generate images based on di erences in permittivity and conductivity. The large di erences in permittivity and conductivity between normal and malignant breast tissue should allow for more reliable detection of breast cancer as opposed to conventional X-ray techniques. This project aims to develop a 3-D ...