Addressing issues such as weak signal strength that prevents long-distance transmission during the broadband signal transmission of communication devices,complex antenna equipment forms,and large volumes,a high-gain printed symmetrical oscillator omnidirectional antenna is proposed.The two pairs of radiation oscillators of the antenna are located on both sides of the printed circuit board.The two pairs of radiation oscillators are arrayed by a microstrip transmission line feed network with matching branches.The metallized vias are used to connect the inner core of the cable,and the radiation plates on the other side of the metal skin of the cable are welded together.By feeding the antenna in this way,the impedance matching of the antenna is improved,and the antenna gain is effectively enhanced.This enables the antenna to achieve omnidirectional radiation characteristic within the required bandwidth,with a relative bandwidth of 54.77％,and an realized gain greater than 3 dB,the band and horizontal plane circularity less than 2.2 dB.After practical verification,the antenna can meet the set application scenarios.
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