Research Article
Analysis of the Electrical Performance of Multituned VLF Thirteen-Tower Umbrella Antennas
Table 2
Parameters of antenna and ground system.
| Parameters | Value |
| Center tower height (m) | 298 | Inner ring tower height (m) | 266 | Inner ring radius (m) | 558 | Outer ring tower height (m) | 243 | Outer ring radius (m) | 935 | Sag of top load wires | Inner 4 wires: 4%, outer 4 wires: 5% | Conductor conductivity (S ∗ m−1) | 5.8 × 107 | Earth conductivity (S ∗ m−1) | 0.01 | Input power (kW) | 679 | Model | Model I | Model II | Ground screen radius (m) | 500 | 980 | Ground screen density | 0–100 m: 240 wires 100–500 m: 180 wires | 0–100 m: 240 wires 100–300 m: 200 wires 300–980 m: 180 wires | Buried depth of ground screen (m) | 0.3 | 0.3 |
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