Comparative analysis of circular patch antenna with CSRR for multiband applications

A circular patch CSRR antenna has been designed. To this antenna certain geometrical modifications has been made and they are presented as three structurally modified antennas. The first design is a circular-heptagonal patch with a triangular slot. This antenna resulted in a single band application so a triangular slot is directly introduced on the circular patch by removing the heptagon and this antenna is used for triple band applications. The triangular slot was removed from the circular-heptagonal patch and this results in a multiband resonance with five resonating frequencies and this antenna has better gain when compared with the other two designs and this antenna resonates at 3.5 GHZ used for WiMAX, 6.9 GHZ RFID, 8.9 GHZ Maritime radio navigation 10.2 GHZ Amateur satellite radionavigation, 12.4 GHZ fixed broadcasting satellite applications.