Design and Implementation of a Butterfly Broadband Printing Dipole Omnidirectional Antenna

A printed dipole antennas is designed and optimized in this paper. Based on the traditional dipole antenna, a kind of broadband printed dipole omnidirectional antenna is designed by adjusting the size of the antenna arm and the position of the balun. A coaxial connector is added to the antenna model to feed the current. In order to increase the omnidirectional performance, a method of adjusting the shape of the dipole antenna arms is proposed. The antenna model is simulated by using HFSS. The results of physical measurement of the antenna sample show that the operating frequency is 4.37GHz to 6.98GHz, the maximum gain of the H-plane pattern is 4.58dB and range between the maximum and minimum gain is 2.4dB.