Antenna Calc

 
Horn Geometry
a b h θ L
Horn


Optimum Gain Pyramidal Horn (max gain for a given length)
(For sufficiently large horns, See Figure below for discrepancy)
Gain (dB) Freq (GHz) WG: a (inch) WG: b (inch) A (inch) B (inch) H (inch) AngA (deg) AngB (deg) HPBW E (dB) HPBW H (dB)

CalculatorAccuracy

PyramidalHorn
The calculator above is accurate for sufficiently large horns.
Note the left figure for the discrepancy between calculator vs HFSS


Optimum Gain Concial Horn (max gain for a given aperture size)
(Reference: King's optimum conical horn)
Freq (GHz) A (inch) D (inch) H (inch) Gain (dB) Ang (deg)

See plot to right.

ConcialHorn


Scalar Horn (HE11)
Freq (GHz) A (inch) D (inch) H (inch) 3dB BW (deg) 10dB BW (deg) 20dB BW (deg) Gain (dB) Ang (deg)
RMS
Freq (GHz) RMS (inch) Loss (dB)

Far Field
Freq (GHz)
Aperture Dia
Far Field (meter)


Large Aperture Antenna
Freq (GHz)
Aperture Dia (inch)
Gain (dB)
Beamwidth (deg)