Design of a Dual Band Microstrip Patch Antenna

There has been a significant amount of research conducted in recent times with the purpose of constructing and optimizing dual-band microstrip patch antennas particularly for applications that include wireless local area networks. There is also increasing use of wireless technology and hence antennas are now playing an essential part in all electronic devices. An antenna design that resonates at two separate frequencies may also be referred to as a dual band antenna and the purpose of this study is to develop such a configuration. In this research work, a dual band antenna is build which has H shape. This antenna is able to function at two unique resonance frequencies, namely 2.4 GHz and 3.5 GHz. After designing the antenna, it is tested using the software High Frequency Structure Simulator (HFSS) version 15.The return loss at 2.4Hz and 3.5GHz is -21.08 db and -24.80 db respectively. The proposed antenna has maximum gain of 4.7db.The magnetic field is in YZ plane. The electric field is confined to the XZ plane and attains its peak magnitude in the Z direction. The bandwidth obtained is 60 MHz and 50 MHz respectively.