Compact triple band H-shaped slotted Circular Patch Antenna

Microstrip antennas with their advantages and with the availability of tools to design were remains as a centre of research attraction. The main research aspect of the Microstrip Patch is to enhance its bandwidth. To enhance the bandwidth of the Microstrip Patch antenna several techniques were proposed. The slot on the patch, which increases the fringing fields, remains simple and effective technique. This paper provides an insight in the design of Microstrip antenna and presents a design of triple band H shaped slot Circular Patch Antenna. The design utilizes the circular patch of radius 20mm and obtains triple band at the frequencies 2.4GHz, 4.5 GHz and 6.5 GHz. The return loss was measured as -25db, -24db, -15db and the gain obtained as 7db, 5db, 4.2db in the respective frequencies. HFSS the Finite Element Method based analysis software is used to design the Patch Antenna and to simulate the results.