A broadband and low cross polarization antenna with a balun of microstrip line coupling to slot line

作者：Sun, Kai; Yang, Deqiang^*; Liu, Sihao; Yang, Tianming

来源：PLos One, 2018, 13(3): e0194181.

DOI：10.1371/journal.pone.0194181

• QUASI-YAGI ANTENNA
• WIDE-BAND
• BOWTIE ANTENNA

In this paper, a wide-band low cross polarization antenna with a structure of microstrip line coupling to slot line as the balun is proposed. The radiation part of the antenna is fed by two pairs of parallel transmission line via a transition from a slot line which is coupled by a micro strip line. Because it is fed by parallel transmission lines, which is balanced-fed structure, the antenna can achieve an improved low cross-polarization performance. The height of the antenna is 0.146A0 (A0 is the wavelength of lowest frequency). The prototype antenna demonstrates a measured impedance bandwidth of 93.5% (2.7-7.44 GHz), a 3-dB-gain bandwidth of 77% (2.7-6.1 GHz), and a maximum gain of 10.5 dBi at 4.5 GHz.

• 出版日期2018-3-15
• 单位电子科技大学