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An in-phase power divider as a feeding network for two-element antenna array for microwave hyperthermia treatment of brain tumor is presented. The proposed power divider is used for the simultaneous power distribution between two element antenna array, where equal amplitude and in-phase signals are required. It is designed using two pairs of coupled lines to achieve 100% fractional bandwidth. The...
Brain Stroke is the leading cause of disability and death in the world in which the supply of blood to the brain is stopped by a clot or burst of blood vessel. Microwave techniques have been investigated as a reliable solution for the immediate detection of brain strokes. To that end, an appropriate signal acquisition and processing method is needed to detect the damaged tissue using the extremely...
Worldwide, stroke is the leading cause of adult disability. Stroke occurs when the blood supply in a part of brain is disturbed as a blood vessel bursts or is blocked by a clot. Delayed or wrong medical analysis can be fatal for the stroke affected patient. In this paper, a compact antenna is proposed for the brain stroke detection system. The antenna provides 77% fractional bandwidth (centered at...
A microwave frequency based differential technique is investigated to detect and differentiate between the two primary kinds of brain strokes namely ischemic and hemorrhagic strokes. A compact unidirectional antenna with wideband operation is designed to build a portable system for this purpose. This investigation is based on the fact that among the two identical halves of human brain, strokes usually...
The construction and operation of three ultrawideband microwave imaging systems aimed for biomedical applications such as detection and location of breast tumor is presented. The first system utilizes a cylindrical array of antennas that are connected with a vector network analyzer via a set of microwave switches. The system is arranged so that it can operate as monostatic or multistatic radar. In...
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