International Research Publication House (IRPH)
In this paper, the construction and the study of the prototype of a Planar Inverted-L (PIL) patch antenna is presented. The paper reveals that PIL patch antenna is a good candidate for achieving compact micro strip antenna. The two identical slits (having dimensions) inserted at the non-radiating edges of PIL patch's vertical portion help to obtain various frequency ratios of the two resonant frequencies. The decrease in the first resonant frequency with the increase in the slit length, results in a tunable frequency ratio in the range of about 1.63 to 1.76. In addition to the compact operation, the proposed design is also suitable for dual frequency operation.