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Numerical simulation of a UC–PBG lens for gain enhancement of microstrip antennas

✍ Scribed by Taha A. Elwi; Hussain M. Al-Rizzo; Daniel G. Rucker; Fei Song

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
619 KB
Volume
19
Category
Article
ISSN
1096-4290

No coin nor oath required. For personal study only.

✦ Synopsis

Because of their versatility and ease of fabrication, Uniplanar Compact-Photonic Band Gap (UC-PBG) structures have been recently applied to microstrip antenna design. However, when the PBG structure is embodied on the ground plane of a conventional microstrip antenna, the resulting configuration suffers from strong backward radiation and reduced efficiency. In this article, a combined UC-PBG/ antenna structure is proposed to overcome the aforementioned drawbacks. The performance characteristics of a microstrip antenna positioned below a UC-PBG are examined using CST and Ansoft commercial software packages, which are based on the Finite Integration Technique (FIT) and the Finite Element Method (FEM), respectively. The proposed antenna demonstrates a remarkable improvement in the bore-sight gain, about 7.8 dBi at 2.64 GHz, compared with the corresponding conventional microstrip antenna and front-to-back ratio in excess of 22.8 dBi. V

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