A Full-Band Digital Television Transmitting Antenna Array With Dual-Layer Bowtie Dipole Unit

被引：2
作者：
Yu, Haijing [1 ]
Fang, Shaojun [1 ]
Jiang, Lingling [1 ]
Liu, Hongmei [1 ]
机构：
[1] Dalian Maritime Univ, Sch Informat Sci & Technol, Dalian 116026, Peoples R China
来源：
IEEE ACCESS | 2020年 / 8卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Antenna arrays; Impedance; Dipole antennas; Digital TV; Transmitting antennas; Wideband; Full-band antenna array; dual-layer bowtie dipole; DTV transmitting antenna; low VSWR;
D O I：
10.1109/ACCESS.2020.2998516
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A full-band digital television (DTV) transmitting antenna array with dual-layer bowtie dipole unit is proposed in this paper. The dual-layer bowtie dipole is utilized as the antenna unit to broaden the frequency bandwidth, and its key parameters are discussed. Besides, a wideband impedance matching network with stepped complex impedance transformers is designed to achieve the full-band low voltage standing wave ratio (VSWR). For verification, a prototype is designed, fabricated, and measured. The experimental results agree well with the simulations. The measurement shows a relative bandwidth of 62.4% (455 MHz - 868 MHz) under the criterion of VSWR < 1.15. Particularly, the VSWR is less than 1.13 within the range of 470 MHz - 862 MHz, (i.e. the full band of the DTV transmitting system). And the proposed antenna maintains a stable gain larger than 11.6 dBi over the operating frequency band with the half-power beam width of 70 degrees +/- 3 degrees in the horizontal plane, which meets the requirements of the full-band signal transmission in the DTV broadcasting system.
引用
收藏
页码：102138 / 102145
页数：8
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