Rhombus shaped ultra-wideband Vivaldi antenna with enhanced gain for brain tumor detection
Abstract
In this article, a novel design for a compact Ultra-wideband Vivaldi antenna specifically designed for brain tumor detection. The antenna design incorporates a rhombus-shaped slots strategically positioned within the Vivaldi antenna, resulting in a compact form measuring 42.8×29.1×1.6 mm³. To accomplish this, the simulation and fabrication of the antenna utilized a cost-effective FR-4 substrate with a height of 1.6 mm was employed. The integration of these 1 mm side length rhombus-shaped slots enhances the antenna's gain and directivity, surpassing conventional designs. Comprehensive measurements were carried out, illustrating a return loss (S11) lower than -10 dB over a frequency spectrum spanning from 3.1 GHz to 10.6 GHz. Moreover, the measured results showcase an impressive gain of 5.8 dB, emphasizing the efficacy of the proposed antenna design.
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