Directivity Improvement of 9-Element Yagi Uda Antenna by increasing director elements in comparison with 7-Element Yagi Uda Antenna

This paper focusses on the design of 9 element Yagi Uda antenna. A simple three element Yagi Consist of a Reflector, Dipole as feed element and a director. It is necessary to have antennas with good directivity for effective signal reception. Directivity of Yagi antenna can be increased by increasing directors. A 7 element Yagi consist of a Reflector, Dipole and 7 directors. Two groups are used 9-elements yagi uda antenna and 7-elements yagi uda antenna with Gpower value 0.8. Increment in directivity is by 2Db and attained significance ratio of 0.022 (p<0.05).