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://ssdjiyhajyeh.timeblog.net/70682888/community-based-malaria-control-in-southern-malawi-a-description-of-experimental-interventions-of-community-workshops-house-improvement-and-larval-source-management