5 Essential Factors that Influence the Impedance of Dipole Antennas

The ​​impedance of dipole antennas​​ is influenced by ​​length (72Ω at λ/2, dropping if shorter)​​, ​​diameter (thicker wires reduce impedance)​​, ​​height above ground (≥λ/2 for 50-75Ω)​​, ​​nearby objects (metal can shift impedance ±20Ω)​​, and ​​feed method (balun usage affects balance)​​. Optimal tuning requires ​​VSWR <1.5:1​​, achieved by adjusting ​​length (±5% for 50Ω match)​​ and using […]

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