Abstract The design and analysis of an ultra wideband aperture antenna with dual-band-notched characteristics are presented. The proposed antenna consists of a circular ring exciting stub on the front side and a circular slot on the back ground plane. By utilizing a parasitic strip and a T-shaped stub on the antenna structure. two notched bands of 850 MHz (3. https://parisnaturalfoodes.shop/product-category/org-baobab-fruit-powder/