This calculator estimates the gain, half-power beamwidth (HPBW), and effective aperture of a satellite dish. It helps design high efficiency antennas for communications, satellite reception and radar systems using a ratio of wavelength to dish diameter.
Formulas
HPBW = 60 × (λ / D)
A e = (π × D²) / 4
G = (4 × π × A e ) / λ², using π = 3.14 to match reference values
Explanation of formulas
The beamwidth (HPBW) depends on the ratio between the wavelength (λ) and the reflector diameter (D). The effective aperture (A e ) corresponds to the surface area of the dish used to capture or transmit the signal. The gain (G) is then derived from this aperture, representing the ability to concentrate the signal.
Uses of the calculator
- Design of parabolic antennas for satellite communication and radio links.
- Gain and coverage analysis of large aperture antennas.
- Practical tool for RF engineers, students and telecommunications technicians.
- Allows you to optimize the size and performance of a reflector depending on the frequency used.