Design of Microwave 3-D Antenna for Brain Tumour Sensing System

Abstract

For microwave head imaging applications, a dense 3D patch antenna is described. The weighted patch approach is used to generate radiation patterns in a single direction, while the folding technique helps to obtain resonance at a lower frequency, both of which are required for an imaging system. To reduce the total antenna structure, a shorting wall is used. At 2.7 GHz, this method produces an antenna tone frequency of 2.65-2.91 GHz, with a gain value of 6.6 dBi. The antenna's dimensions are 25 25 10.5 mm3. The suggested antenna operates at a frequency that is acceptable for brain imaging. The proposed antenna's sensor feature is linked to its connection with the imaging entity, as well as its small size and excellent radiation pattern. Raster scanning technique is used to create a 2D of the target. The proposed highly directional antenna has been shown to identify tumours inside a human brain phantom. A 3-D antenna is given in this project that uses a stacked patch with a folding approach to reduce the antenna's dimension. Thus, its size is small, measuring 0.23 0.23 0.09 inches in length and width. It offers a good pattern over the working frequency range while remaining small in size. If the specification required is high gain with low frequency, then a shorting wall is required.