A Lightweight 3-D Printed Dual-Band High-Gain Slotted Spherical Antenna

被引：13
作者：
Zhu, Yujian [1 ]
Li, Jin [2 ,3 ]
Huang, Guan-Long [2 ,3 ]
机构：
[1] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China
[2] Shenzhen Univ, Coll Elect & Informat Engn, Shenzhen 518060, Peoples R China
[3] State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2020年 / 19卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Slot antennas; Gain; Dual band; Printing; Prototypes; Antenna radiation patterns; Antenna measurements; 3-D printing; dual-band antenna; high-gain; slotted spherical resonator; waveguide slotted antenna; ARRAY; DESIGN; EFFICIENCY;
D O I：
10.1109/LAWP.2020.2971836
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new class of slotted spherical antenna is proposed in this letter. The antenna is composed of a single air-filled high-quality-factor spherical resonator that is properly slotted on the cavity shell, and is fed by a rectangular waveguide on the other side of the slots, radiating the TM101 and TM211 modes. A three-slot antenna prototype operating at X- and Ku-bands is designed and implemented as a proof of concept. Good directional radiation patterns are achieved at both bands by optimizing dimensions of the three circumferential slots. The prototype is additively and monolithically manufactured by incorporating stereolithography apparatus and electroless copper plating techniques, showing enhanced flexibility and improved efficiency in the fabrication. The antenna demonstrates a light weight (11.2 g) and a reflection coefficient below -10 dB at the lower band from 9.88 to 10.68 GHz and the upper band from 13.05 to 15.05 GHz, with the maximum realized gains of 8.8 and 10.1 dBi, respectively.
引用
收藏
页码：552 / 556
页数：5
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