Ellipse shape crescent slot compact broadband microstrip antenna

A new wideband small size Crescent Slot Ellipse Shape Antenna (CSESA) with crescent slot is presented. A lossless material honeycomb dielectric of dielectric constant 1.11 is sandwiched between radiating patch and ground. The proposed antenna is excited by coaxial probe excitation technique. The main motivation for this work is to enhance the bandwidth of the Impedance. The simulation results verify that the proposed antenna has a 9 GHz bandwidth for return less than -10 dB while covering some of X-Band (8 - 12 GHz) and entire Ku-Band (12 - 18 GHz) of microwave frequency bands. The basic advantage of these designs is its simple structure with no active element, no shorting pins and no vertical walls between the patch and the ground. The typical impedance behavior and far field radiation pattern characteristics of proposed configuration are presented. The antenna is designed, optimized and simulated using Transmission line Matrix (TLM) based software Microstripes 7.5.