Development of 2.4GHz Band L-Shaped Circular Polarized Slot Antenna

In this paper, we propose the design of L-shaped circular polarized slot antenna for 2.4GHz band. The proposed antenna element is composed of three parts: a top metal that consists of L-shaped slot structure, a dielectric substrate (FR-4), and a bottom floating metal layer. The simulated results of |S<inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf>|, axial ratio, and radiation pattern are presented. A unidirectional circularly polarized slot antenna operating in the 2.4 GHz band has been developed. The bandwidth of the |S11| is 0.1 GHz, which is sufficient for the bandwidth of 0.07 GHz. The AR characteristic satisfies around 2.4GHz, and circularly polarized radiation is realized in the desired frequency bandwidth.