Resumo

TECPOYOTL-TORRES, M.; VERA-DIMAS, J. G.; FLORES-GONZALEZ, M. A.  e  VARGAS-BERNAL, R.. Structures defects of two shapes on rectangular and circular ground planes. Nova scientia [online]. 2016, vol.8, n.16, pp.1-16. ISSN 2007-0705.

In this work the performance of a rectangular patch antenna with a rectangular ground plane is compared to the case where a circular one is used. For circular case, bigger gain and smaller bandwidth are observed. The comparison was also realized when defects were implemented on the ground planes. As a result, changes on gains, S11 parameter, and bandwidths were observed.

For rectangular antenna on rectangular substrate with Defect Ground Structure (DGS), the main improvement is on S11 parameter. For the case of circular ground plane (or substrate) the Bandwidth shows an increment of 113.59% compare to the case without defects. All antennas were simulated using FEKO software.

Palavras-chave : Gain; Microstrip; S₁₁ parameter; FR-4.