Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11002516 | AEU - International Journal of Electronics and Communications | 2018 | 21 Pages |
Abstract
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 20â¯GHz and 15â¯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 11â¯GHz to 20â¯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 1â¯dB gain-bandwidth of 4.66â¯GHz is obtained (27.4% fractional bandwidth) in the frequency band of 14.72â¯GHz to19.38â¯GHz. Finally, the reflectarray antenna is fabricated and tested. It can be seen that there is a good agreement between simulation and measurement results.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Mohammad Fazaelifar, Shahrokh Jam, Raheleh Basiri,