Implementation and Developments of Single Feed Design using Multiple U- Slotted Patch Antenna for Wireless Applications

Abstract

Important factor for antenna design is that antenna must have small size and must be capable of working for different bands. This paper presents design and simulation of multiple u slot antenna for wireless applications. Design and simulation has been carried out using HFSS simulation software. In this dissertation, slots have been cut on side of patch so as to obtain better characteristics; initially patch of length 30 mm is taken and analyzed using coaxial feed at (1, 13, 0).U slots cut in patch is having length of 6 mm and two mm wide. Two straight arms are surrounding it with dimensions of 1x 8 mm 2. This u slot is repeated for four sides.. By cutting four u slots, antenna resonated at 4.6 GHz, 5.2 GHz and 7.4 GHz with return loss of-19.81 dB,-11.10 dB and-18.1 dB with bandwidth of 200 MHz, 100 MHz and 800 MHz. This antenna had good gain with maximum power in major lobe direction. This antenna can be used for defence and secure communication application, WLAN application, satellite, RADAR and different C band applications. Parametric analysis had been applied by varying substrate thickness, feed point, substrate, changing dimensions of patch. It is found that best results obtained using patch of dimensions 30 mm using FR-4 as substrate with thickness of 2.4 mm.