Design and fabrication of a wideband reflectarray antenna in Ku and K bands

被引：18

作者：

Fazaelifar, Mohammad ^{[1
,2
]}

Jam, Shahrokh ^{[1
]}

Basiri, Raheleh ^{[1
]}

机构：

[1] Shiraz Univ Technol, Dept Elect Engn, Shiraz, Iran

[2] Iranian Space Res Ctr, Mech Inst, Shiraz, Iran

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2018年 / 95卷

关键词：

Bandwidth; Phase response; Reflectarray; Unit cell; BROAD-BAND; BANDWIDTH;

D O I：

10.1016/j.aeue.2018.08.037

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：

The purpose of this paper is design of a wide band single layer reflectarray antenna using a new broadband cell. The proposed cell consists of two parts. The first part is a circular patch and the second one is a ring with some additional stubs, which are attached to the patch and ring in a symmetrical form. The circular patch and ring elements are designed at frequencies of 20 GHz and 15 GHz respectively. In order to increase the reflectarray antenna bandwidth, at first the dimensions of the patch, ring and stubs are optimized to attain uniform phase response in the frequency range from 11 GHz to 20 GHz. Then an air layer is considered under the dielectric substrate. The reflectarray antenna is designed based on this optimized wideband unit cell. A wideband horn antenna is also designed as a feed antenna for the proposed reflectarray structure. The reflectarray antenna with horn are simulated. The 1 dB gain-bandwidth of 4.66 GHz is obtained (27.4% fractional bandwidth) in the frequency band of 14.72 GHz to19.38 GHz. Finally, the reflectarray antenna is fabricated and tested. It can be seen that there is a good agreement between simulation and measurement results. (C) 2018 Elsevier GmbH. All rights reserved.

引用

页码：304 / 312

页数：9

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