Browsing by Author "Doğu, Semih"

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An antipodal vivaldi antenna design for torso imaging in a coupling medium

Joof, Sulayman; Doğu, Semih; Bilgin, Egemen; Çayören, Mehmet (IEEE, 2021)

An antipodal Vivaldi antenna designed to operate in a coupling medium with a relative dielectric constant of epsilon(r) = 25 for microwave imaging of torso is presented in this paper. The proposed antenna is similar to the ...
Feasibility of distorted born iterative method for detecting early stage of heart failure

Doğu, Semih; Bilgin, Egemen; Joof, Sulayman; Akıncı, Mehmet Nuri (IEEE, 2020)

In this paper, we analyze the feasibility of using microwaves to detect early stage of congestive heart failure, which causes water accumulation in the lungs. To this aim, a slice from realistic human torso phantom, which ...
A modified newton method formulation for microwave imaging

Bilgin, Egemen; Doğu, Semih; Coşğun, Sema; Çayören, Mehmet (IEEE, 2020)

A new variant of Newton type methods has been developed for quantitative microwave imaging. To deal with the ill-posedness of the inverse problems, standard Newton type methods involve a linearization of the so called data ...