Estimation of Slot Position for a Slotted Antenna

Compact microstrip patch antennas have become quite popular nowadays. With lesser form factor requirements and for multiband applications, slotted antennas have proved useful. This paper evaluates the merits of slot positioning with respect to a fixed feed point. The evaluation is based on antenna parameters like resonating frequency, return loss and bandwidth. The simulations are run for a triangular (Δ) and a V slot. Results show that output characteristic follows almost similar in nature to slot positions with respect to fixed feeding point, irrespective of the slot shape. It is found that a slot produces maximum signal bandwidth and gain when put near the feeding point.