Skip to content

Tier 1 · closed-form staples

Half-Wave Dipole Inverted-V Dipole Folded Dipole Quarter-Wave Vertical / Ground-Plane Half-Wave Vertical 5/8-Wave Vertical End-Fed Half-Wave (EFHW)Full-Wave Loop (Quad)Delta Loop Random / Long Wire

Tier 2 · published-design

Yagi-Uda Moxon Rectangle J-Pole / Slim Jim

Tier 3 · complex / niche

Magnetic Loop (Small Transmitting Loop)Discone G5RV Off-Center-Fed Dipole (Windom) All Antenna Models →

Wavelength Velocity Factor Resonant Frequency Balun Ratio SWR Feed Line Loss Bandwidth Loading Coil All Engineering Tools →

Center freq

MHz

Engineering Tool · exact

SWR

SWR = (1 + |Γ|) / (1 − |Γ|) · Γ = (Z − Z₀)/(Z + Z₀)

From

Line impedance Z₀

Ω

Load resistance R

Ω

Load reactance X

jΩ

X may be negative (capacitive). Set X = 0 for a purely resistive load.

SWR

1.50 : 1

|Γ| reflection

0.200

Return loss

13.98dB

Mismatch loss

0.18dB

WP4TZV Antenna Design · datasheet system v1 Region Client-side math · no accounts · works offline