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Aperture Antennas Calculator

Antenna Aperture is the measure of the antenna's efficiency at its transmitting and receiving radio waves. Use this online calculator to calculate the electric field radiated by the aperture antennas at two different angles.

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Aperture Antennas Electric Field Calculation

Electric Current Density (j) =
Electric Current Density for 1st element (J1) =
Wave Length ( λ ) =
Radius of Circular Aperture (a) =
Distance of the observation point from the Origin (r) =
Coordinate Angle 1 ( θ ) =
Coordinate Angle 2 ( φ ) =


Electric Field of coordinate Angle 1 (Eθ) =
Electric Field of coordinate Angle 2 (Eφ) =

 
   
  
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Formula
Eθ = [ ( j×k×a2×E0×e-jkr ) / r ] × Sinφ [ ( J1×k×a×Sinθ) / k×a×Sinθ ]
Eφ = [ ( j×k×a2×E0×e-jkr ) / r ] ×(Cosθ×Cosφ) [(J1×k×a×Sinθ) / k×a×Sinθ]

Where,
    k = 2π / λ
    λ = Wave Length
    E0 = 8.8541878176 ×10-12F/m (electric constant)
    θ = Coordinate Angle 1
    φ = Coordinate Angle 2
    a = Radius of Circular Aperture
    r = Distance of the observation point from the Origin
    j = Electric Current Density
    J1 = Electric Current Density for 1st element

This tool will help you dynamically to calculate the electric field of Aperture Antennas.