Design of Algeria Flag shape Antenna Based On A New Circular SIW-WUVM Topology

A new circular antenna design using substrate integrated waveguide without upper vias metallization (SIW-WUVM) is proposed. For comparison and illustration purposes, the Algerian flag circular antenna based on both SIW-WUVM and conventional circular SIW with metallic top slots (CSIW) has been designed and simulated.The main motto of this paper is to design the effective shape of the antenna that can provide lower return loss, better gain, and reduced radius of patch for K-band (18 GHz to 26 GHz) applications. Our Algerian flag shape antenna based on SIW-WUVM operating at 24 GHz frequency meets the required objective; this frequency is used for police radar for vehicle speed, detection, satellite communication, etc. So this design gives good characteristics such as gain, adaptation, radiation pattern, and demonstrates the validity of direct integration of SIW technology without upper vias metallization, and also allows miniaturization of the size of the patch radius.