A Beam-Shaping Feeding Network in Series Configuration for Antenna Array With Cosecant-Square Pattern and Low Sidelobes

被引：23

作者：

Chu, Hui ^{[1
,2
]}

Li, Peng ^{[1
]}

Guo, Yong-Xin ^{[3
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing 210094, Jiangsu, Peoples R China

[2] Nantong Univ, Sch Elect & Informat, Nan Tong 226019, Peoples R China

[3] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2019年 / 18卷 / 04期

关键词：

Cosecant-square beam; decoupling wall; low sidelobe level; series feeding network; DESIGN;

D O I：

10.1109/LAWP.2019.2901948

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：

An SIW feeding network is proposed to achieve a cosecant-square beam pattern with low sidelobes. Different from conventional feeding networks in parallel configuration to obtain such a beam pattern, the proposed structure is in series configuration, which can provide higher transmission efficiency. Moreover, power-dividers within this feeding network can provide larger power-division ratio than conventional designs, enabling low-sidelobe levels. Vertical decoupling walls are also utilized for the acceleration of the whole design procedure. A 15 x 22 array prototype operating at Ku-band, which requires cosecant-square radiation pattern for the elevation plane and pencil-beam radiation pattern for the azimuth plane, is designed and fabricated. Measured results show that, within the target frequency range (15 GHz-16 GHz), the achieved maximum gain is larger than 27.4 dBi with sidelobe levels (SLLs) lower than 20 dB for both the elevation and azimuth planes. The excellent performance indicates that the overall design approach is very suitable for such kind of large scale antenna arrays.

引用

页码：742 / 746

页数：5

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