Er.Gulshan Rana, Er. Saranjeet Singh
Four U slot antenna is obtained by making four u slots in patch. Initially simple patch antenna is taken and four u slots are cut one by one to analyze effect. Initially single u shaped antenna is designed and results are obtained. This design is modified by cutting four u slots to form u slot ring like structure. Further characteristics of antenna are modified by applying Defected Ground Structure (DGS) to antenna. By applying plus shape DGS, antenna resonated at 4.6 GHz, 6.7 GHz and 8.9 GHz with return loss of -23.66, -30.80 and -12.80 dB, gain of 1.37 dBi, 3.37 dBi and 1.78 dBi and bandwidth of 300 MHz, 1300 MHz and 300 MHz. The simulator used here for all analysis is Mentor Graphics IE3D. This antenna can be useful for different applications in C band , WLAN, Defence and secure communication and IMT band.
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