A Review on Antenna Radiation Pattern Synthesis

In recent communication systems side lobe level reduction has become one of the important issue. For applications like digital beam forming it is one of the important factor because it reduces the effect of interference arriving outside the main lobe. This reduction in the interference increases the capacity of the communication systems. This paper presents the different methods for reducing the side lobe level and increasing the directivity. In several occasions a single element antenna is unable to meet the gain or highly directive radiation pattern requirements especially suited for long distance communication. Antenna arrays are formed to circumvent such problems by combining many individual antenna elements in certain electrical and geometrical configurations. The purpose of this research is to synthesize the radiation pattern for the design of different phased array structures considering the optimization process by using the natural computing to achieve the higher directivity with minimizing the side lobe level.