ISM Band Triangular Patch Antenna on FR4 Substrate with `U' Pattern Slots

In recent past researchers have given much attention on the miniature compact antenna on PCB Substrate. To meet the antenna requirement in portable communication equipment variety of microstrip patch antenna structures with different PCB substrate materials have been suggested. In this work, a triangular microstrip patch antenna on FR4 material with multiple slots in `U' patterns is fabricated. With different width of the slots the variation of resonant frequency for fine tuning is observed, keeping in mind the ISM band at 2.4 GHz.