A NOVEL DESIGN AND EVALUATION OF RECTANGULAR MICROSTRIP ANTENNA FOR MICROWAVE APPLICATION

A novel design of rectangular microstrip antenna is realized for penta band operation from conventional rectangular microstrip antenna (CRMA) by loading slots on the conducting patch. The penta bands are achieved by incorporating four T- shaped slots along the length and width of CRMA. The magnitude of each operating bands spread over c to ku band of frequency spectrum are found to be 1.14%, 7.29%, 1.6%, 3.71% and 3.33% respectively. Further these penta bands can be converted to hexa bands by removing two T-shaped slots along the length of CRMA without changing the nature of radiation characteristics. The magnitude of each operating band is found to be 2.70 %, 5.82 %, 12.15 %, 3.45 %, 7.30 % and 7.13 % respectively. The proposed antennas may find application in microwave communication systems operating at c to ku bands.