Influência do Posicionamento de uma Estrutura PBG sobre a Largura de Banda de uma Antena de Microfita (Influence of a PBG Structure on the Bandwidth of a Microstrip Antenna)

José Felipe Almeida (, Carlos Leonidas da Silva Souza Sobrinho (

Depto. de Engenharia Elétrica e de Computação, Universidade Federal do Pará, Brazil
This paper appears in: Revista IEEE América Latina

Publication Date: March 2004
Volume: 2,   Issue: 1 
ISSN: 1548-0992

In this work the influence of a PBG structure on the bandwidth of a microstrip antenna is verified. Such structure is located in different forms to relation with the antenna patch (above, below and by a combination of these). Then, the thickness of PBG layer is varied. With this, it is possible to get some results for the bandwidth and efficiency of the antenna, mainly when this antenna is inverted by the PBG structure. The analysis of the problem is made by FD-TD method with ABC using UPML.

Index Terms:
Bandwidth, FD-TD method, microstrip antenna, PBG, surface waves   

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