IJIRCSTJournal International Journal of Innovative Research in Computer Science and Technology I S Volume 12 Issue 3 Electronics and Communication Engineering English May - June 2024 N N Y 2024 04 30 Computer Sciences A Novel Rhombus Shaped Multiband Antenna for Wireless Applications English Y 6 10 Dr. Ch. Manohar Kumar English Y S. Yaswanth English N B. Venkata Sai Teja English N K. Akhila English N S. Joshna English N https://doi.org/10.55524/ijircst.2024.12.3.2 A 30X20X1.6mm3 Novel Rhombus Shaped ring type multiband Antenna was proposed in this paper.  The Antenna has 25x15mm2 partial ground inserted below the FR4 Epoxy Substrate to improve performance of Antenna. In addition, we added two rectangle shaped patch structures of dimensions 14X5.5mm2 on both sides of Feed structure to improve S11.The proposed design operates at three bands covering C, X, and Ku band regions. Here we got better S11 at 12.1GHZ which is useful for Radar Applications. English Structure, S11, Multiband, Patch https://ijircst.org/abstract.php?article_id=1254