A Squared Shaped Ring Loaded with Improved Radiation 2-Element Waveguide Array for Radar Applications

In this work a frequency selective resonator (FSS) immersed dual band, rectangular slot array has been presented. Two squared shaped ring frequency selective surfaces are interested on sides of travelling slots to obtain dual-band behavior. The presented array have input reflection coefficient ranges from 8.3-8.52 GHz and 11.7-12.12 GHz respectively. The presented array have higher front to back ration and 8-10 dBi gain, which is suitable for X-band application particular in radar.