Research Article
Design of High Gain and Broadband Antennas at 60 GHz for Underground Communications Systems
Table 3
Comparison of the characteristics of the proposed antennas.
| | Antennas | 1 | 2 | 3 | 4 |
| | Bandwidth | 36.5 | 14.36 | 13.50 | 14.36 | | Gain at GHz dBi | 6.9 | 7.8 | 14.36 | 15.7 | | 3 dB beamwidth E-plane (°) | 142.3 | 69.6 | 20.7 | 22.9 | | 3 dB beamwidth H-plane (°) | 51 | 73.1 | 23.9 | 23.1 | | Angle of main lobe E-plane (°) | 50 | 3 | 0 | 0 | | Angle of main lobe H-plane (°) | 0 | 0 | 0 | 0 | | Side lobe level E-plane dB | −8.9 | −8.4 | −10.7 | −14.3 | | Side lobe level in H-plane dB | −16.3 | −14.1 | −9.7 | −13.3 |
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