Research Article
Elliptical Ring Antenna Excited by Circular Disc Monopole for UWB Communications
Table 1
Parameters of CDM-excited circular and elliptical ring antennas.
| | Parameters | Initial size (mm) (circular ring) | Refined size (mm) (elliptical ring) |
| | Semimajor axis of the elliptical ring (a) | 14.0 | 13.0 | | Semiminor axis of the elliptical ring (b) | 14.0 | 11.0 | | Ring length (l) | 1.0 | 1.0 | | Thickness of the elliptical ring (d) | 1.0 | 1.0 | | Radius of CDM (c) | 12.5 | 6.5 | | Thickness of CDM (t) | 1.0 | 1.0 | | Feeding gap (h) | 1.0 | 1.0 | | Spacing between the elliptical ring and CDM (s) | 2.0 | 8.0 |
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