Antennas have become an indispensable basic need, especially in the area of wireless
networks, and have developed in the past few decades in a very large way in terms of profit
and resistance, bandwidth, bandwidth, radiation pattern, etc. in line w
ith new and
increasing requirements.
In this study, we are interested in studying a broad band antenna where this antenna is very
important in systems that operate on a set of frequencies rather than at a fixed frequency.
The traditional antennas that are designed at a specific frequency change their response
significantly if used on a wide bandwidth around the designed frequency
In this study, the LPDA (Log periodic dipole Array) antenna was designed and studied in a
broadband field and compared to the antenna reference of wire antennas. It is a halfwavelength
antenna λ/2. The study of the effect of frequency change in the antenna
radiation pattern and the radiation beam Half-power level and front-to-back ratio (F/B).
changing in the ground plane for the fractal antenna has been studied in this research and its effects on the antenna frequency bandwidth for more than frequency bands, results are encouraging, where we get multi band fractal antenna with wide BW for more than 100%.
