A Novel Design of Rectangular Microstrip Array Antenna for Wide Band Operation

A novel design of two element rectangular microstrip array antenna (TERMA) is presented for triple band operation with a percentage bandwidth of 7.44 %, 16.41 % and 5.3 %. If another antenna is connected with the TERMA i. e. , the antenna named by three element rectangular microstrip array antenna (THERMA), again the antenna resonates for triple band operation but it is seen that there is a much enhancement in all three bands i. e. , the bandwidth are 10.6 %, 20.8 % and 23 %. Further when three vertical slots are placed on each THERMA three bands merge into single band and the antenna gives highest bandwidth of 127 %. The proposed antennas may find application in radar communication system.