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3-Element Yagi

Three-element Yagi-Uda antenna

Source: Rothammel, Vol. 1, Ch. 16.3, p. 279
Input Parameters
MHz
mm
Results
Driven Element
9.521m
Reflector
9.964m
Director
9.058m
Reflector–Driven Spacing
3.180m
Driven–Director Spacing
2.544m
Total Boom Length
5.724m
Gain
7.1dBd
Front-to-Back Ratio
18dB
Feed Impedance (approx)
22Ω
Beamwidth
65°
Diagram
9.96 mR9.52 mDE9.06 mD3.18 m2.54 mboom: 5.72 m
Radiation Pattern
-3 dB-10 dB-20 dB0 dB0°90°180°270°Max: 9.2 dBiF/B: 18.0 dB