DESIGN AND ANALYSIS OF AN ELLIPTICAL BAND-PASS 3-D FREQUENCY SELECTIVE SURFACE WITH MULTIPLE TRANSMISSION ZEROS

A three - dimensional band - pass Frequency Selective Surface (FSS) with multiple (four) transmission zeros and pseudo - elliptic response is designed from two - dimensional periodic array of two shielded microstrip lines which constitutes of a single unit cell. The designed three dimensional FSS exhibits pseudo - elliptic band - pass response for the C and X band frequencies (5.4 ? 9.6) GHz and find its application in long - distance radio telecommunications, radars, satellite and space communications etc. With four transmission zeros at 5.4GHz, 9.6GHz, 12.4GHz and 15GHz this 3D FSS structure provides wide out - of - band rejection.