SIW cavity-backed dual-band antenna with good stopband characteristics
SIW cavity-backed dual-band antenna with good stopband characteristics
复制标题
SIW 背腔双频天线，具有良好的阻带特性
DOI：
10.1049/el.2018.6681
复制
发表时间：
2018
影响因子：
1.1
通讯作者：
Chun Long He
中科院分区：
文献类型：
--
作者：
Bing Jian Niu;Jie Hong Tan;Chun Long He
A dual‐band antenna with good stopband characteristics is proposed. Different from conventional antennas, two transverse slots are etched on a substrate integrated waveguide (SIW) cavity. Two half modes are excited to achieve a dual‐band operation and two non‐radiating modes, a TE110mode and an even TE120mode, are induced to generate radiation nulls. With the aid of the two radiation nulls, the stopband characteristics of the proposed design including non‐radiating gain and band‐edge selectivity are significantly improved. A fabricated prototype is measured. The measured centred frequency of two passbands is at 3.28 and 3.77 GHz, respectively. The maximum gain is about 5.2 dBi in the passbands while the minimum gain is only −18.9 dBi in the stopband. The measured efficiency is 86% in the lower passband and 75% in the upper passband but it sharply decreases to lower than 5% between 3.36–3.7 GHz.
