Abstract
The effects of tuning the parameters of an annular-ring circular patch antenna with a cross-slot are analyzed and discussed. Then, based on this structure, a novel antenna with an electromagnetic bandgap cell system, which consists of a 4x4 annular-slot array in the groundplane, is designed and both numerically and experimentally evaluated. When compared to the annular-ring patch antenna on a groundplane of the same size without EBG structure, the proposed antenna presents a significant increase in the impedance bandwidth, axial-ratio bandwidth and gain. On the other hand, the insertion of the EBG structure allows a 10% reduction of the centre frequency when compared to the annular-ring patch antenna on a conventional groundplane. The simulated and measured results are in good agreement.
| Original language | English |
|---|---|
| Pages (from-to) | 69-75 |
| Number of pages | 7 |
| Journal | International Journal of Microwave and Optical Technology |
| Volume | 3 |
| Issue number | 2 |
| Publication status | Published - Apr 2008 |
Keywords
- Annular-ring patch antenna
- Annular-slot
- Circular polarization
- Electromagnetic Bandgap