https://digitalcommons.mtu.edu/michigantech-p/3782/
"Investigation and design of an ultra-wideband fractal ring antenna for" by Maryam Rahimi, Samaneh...
In this article, an ultra wideband ring antenna with a fractal formation for notch application is presented. The antenna was printed on FR-4 substrate, which...
of anultra widebandring antennamaryam rahimiinvestigation