Comparison of Microstrip Patch Antennas Operated on 2.45GHZ

Abstract

Nowadays we are living in the ages of innovations. The expansions of communication systems is unbelievable. Many of devices recent are based on database and cloud systems. They need to be connected with other devices and services provider. Well known types of transmission are radio frequency (RF) and optical systems. They use different access for communication. In case of RF systems is need in/out device proposed to receiving/sending of signals. Now are available the many of types of antennas. They are divided by purpose, shape, material, value of radiated power, gain and price. For each purpose is appropriate different type of antenna. The low cost type of antenna is microstrip patch antenna. They are represented by different shapes and materials. Microstrip patch antenna contains the layer of substrate placed between two conduct layers. Parameters of antenna could be affected by change of relative permittivity of substrate. Nowadays are available many of high frequency materials with low value of relative permittivity. The point of this paper is comparison of two types of microstrip patch antennas witch different shapes of radiation patch.