A High Gain Broadband Circularly Polarized Antenna with Sector Dipole

被引：0

作者：

Zhang, Fengshuo ^{[1
]}

Li, Wei ^{[1
]}

Suo, Ying ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Elect & Informat Engn, Harbin, Peoples R China

来源：

2021 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP) | 2021年

关键词：

Circular polarization; Broadband antenna; Dipole; High gain antenna;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A sector dipole circularly polarized antenna is proposed in this paper. The antenna is fed by a semi-rigid coaxial line and the antenna structure is fed by multiple sections of microstrip line of unequal width and lambda(g)/4 length. The structure achieves four equal divisions of power and four 90 degrees degrees of phase differences. For the array element, the conventional rectangular dipole is modified to a sector dipole, while the sector dipole is slotted for better matching. The improved sector dipole structure effectively extends the bandwidth of the antenna. The simulation results show that the impedance bandwidth of the antenna is 64.9% (1.55GHz-3.04GHz), the 3-dB axial ratio bandwidth is about 32.9% (1.70GHz-2.37GHz), the gain is 6.44dBic-7.52dBic, and the antenna is RHCP in the AR bandwidth. The proposed antenna is able to achieve high gain circular polarization in a wide frequency band.

引用

页数：2

共 4 条

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[3]

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