An Investigation of Multiband Triangular Microstrip Patch Antenna using DGS

This paper presents the design and analysis of equilateral triangular microstrip patch antenna using DGS based ground plane. The proposed DGS structure is used to enhance the bandwidth of a triangular shaped microstrip patch antenna. Here the proposed microstrip patch antenna with DGS based ground plane shows the multiband (L and S band) resonance at 1.95 GHz and 3.8 GHz with improved bandwidth of 60 MHz and 250 MHz, respectively. The simulated radiation patterns at various resonating frequencies shows the gain of 2.97 dB and 5.29 dB for 1.95 GHz and 3.82 GHz. The proposed equilateral triangular microstrip patch slot antenna with proposed DGS based ground plane is quite suitable for WLAN and Bluetooth devices with less design complexity.